CIGLR

02/07/24: Observing, Characterizing, and Quantifying Wintertime Precipitation Processes: A 10 Year Retrospective from Marquette, Michigan
2024-02-07 12:00 - 13:00 (America/Detroit) | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
Please join us for a Great Lakes Seminar Series – subscribe!
Time: 12:00-1:00 pm EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall and Virtual
Presenter: Claire Pettersen, Assistant Professor, University of Michigan Climate and Space Sciences and Engineering
Title: Observing, Characterizing, and Quantifying Wintertime Precipitation Processes: A 10 Year Retrospective from Marquette, Michigan

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Webinar Recording
About the presentation: Winter precipitation (rain and snowfall) has widespread impacts on communities through regional ecology, hydrological planning, and socioeconomic effects. In this presentation, I will feature important findings from winter weather regime-based studies leveraging precipitation observations from a long-term, ground-based instrument suite in the Northern Great Lakes region. Realistic estimates of rain and snowfall in weather forecasting and climate models are challenging due to uncertainties in cloud and precipitation parameterization schemes. Additionally, remote-sensing observations require assumptions about hydrometeor microphysical and radiative properties. High temporal resolution, multi-instrument observations of clouds and precipitation can help better constrain processes in models and refine retrieval assumptions, leading to more accurate quantification of accumulation. I will highlight the advantage of utilizing long-term observations to examine key physical and dynamical precipitation processes through the lens of regime partitioning. Precipitation regimes are determined using observations of macrophysical and microphysical properties, large-scale environmental conditions, and thermodynamic profile characteristics. Key findings demonstrate that regime-dependent characteristics of precipitation lead to distinct differences in frequency, intensity, and phase, microphysical properties, and overall accumulation. Additionally, I will demonstrate how winter precipitation regimes in the Northern Great Lakes region are tied to significant seasonal and subseasonal, synoptic, and thermodynamic conditions such as atmospheric blocking and anomalous moisture transport (atmospheric rivers).
About the speaker: Claire Pettersen is currently an Assistant Professor in the Department of Climate and Space Sciences and Engineering at the University of Michigan. Prior to joining the University of Michigan in 2022, Dr. Pettersen worked as an engineer and research scientist at the University of Wisconsin-Madison for more than 15 years. Dr. Pettersen’s research is focused on cold-season and cold-location precipitation (snow, mixed-phase, rain), as well as associated cloud, thermodynamic, and synoptic characteristics. Much of her research is focused on the mid- and high-latitude regions of the world where the climate is rapidly changing. Dr. Pettersen’s research lies at the intersection of science and instrumentation and utilizes ground-based, airborne, and satellite observations of clouds and precipitation. Additionally, Dr. Pettersen has been involved with either ground-based and airborne field campaigns each year since 2004, including installing and deploying instrumentation on both the Greenland and Antarctic Ice Sheets. Dr. Pettersen’s research is supported by program offices and science teams within NASA, NOAA, and NSF. She was a recipient of the 2019 NASA Early Career Award (New Investigator Program) to investigate snow properties using ground-based instruments such as vertically profiling radars and video imagers. Additionally, Dr. Pettersen is currently a Mercator Fellow for the Arctic Amplification: German Climate Relevant Atmospheric and Surface Processes and Feedback Mechanisms (AC)3 project.
**Registration is not required**
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IMPORTANT VISITOR INFORMATION
All seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, we encourage you to attend virtually. For questions regarding building access, please email Margaret Throckmorton at throckmj@umich.edu. Additional questions? Contact Margaret Throckmorton: throckmj@umich.edu; visit ciglr.seas.umich.edu for more information.

01/17/24: Assessing Nutrient Load Reductions in H2Ohio Constructed Wetlands: Case Studies from Brooks Park and the Burntwood-Langenkamp Wetlands
2024-01-17 12:00 - 13:00 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
Please join us for a Great Lakes Seminar Series – subscribe!
Time: 12:00-1:00 pm EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall and Virtual
Presenter: Silvia Newell, Director, Michigan Sea Grant and Professor, University of Michigan
Title: Assessing Nutrient Load Reductions in H2Ohio Constructed Wetlands: Case Studies from Brooks Park and the Burntwood-Langenkamp Wetlands

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Webinar Recording
About the presentation: Wetlands perform critical ecosystem services, including nutrient reduction, flood mitigation, and biodiversity habitat. More than 90% of wetlands in Ohio have been destroyed and most major water bodies in the state now experience annual harmful cyanobacterial blooms. The H2Ohio Initiative in part funds statewide wetland restoration to improve water quality through nutrient reduction. Dr. Newell is one of the H2Ohio Wetland Monitoring Program leads, monitoring water quality at newly constructed wetland or restored wetlands. This talk will focus on nutrient reductions at two wetlands: Brooks Park flowing into Buckeye Lake, a hypereutrophic lake experiencing annual harmful algal blooms. Brooks Park wetland was built at the junction of Murphy’s Run creek into Buckeye Lake, draining a very small watershed (1.2 sq. miles) and behaves as either a flow-through wetland or a coastal wetland depending on precipitation. Preliminary data from the first year of monitoring indicates that the wetland is a sink for total nitrogen (>3000 lbs/yr), but a small source of ammonium (~44 lbs/yr). However, the wetland is a very small source of total phosphorus (~42 lbs/yr), while a sink for soluble reactive phosphorus (~16 lbs/yr). The 90-acre Burntwood-Langenkamp Wetland Conservation Area is located at the confluence of Burntwood and Coldwater Creeks in Mercer County. This site is a former corn/soybean field in the Grand Lake Saint Marys watershed. Water enters the site from Burntwood Creek (BWC) through pump and overflow and then flows through a series of settling ponds and vegetated flats that extend for over a mile. BWC drains approximately 5,700 acres of watershed land and can hold approximately 20 million gallons of water. Total Nitrogen (TN) concentrations at the outflow are approximately 73% lower than the TN inflow concentrations, which average over 16.3 mg N/L for the year 2023. An approximate annual decrease thus far of ~55% in SRP concentration has been seen between the inflow and outflow with outflow concentrations averaging 0.044 mg P/L. Nutrient load reduction will likely vary as the wetlands mature, but data from the first year indicate that both wetlands are already performing a vital ecosystem service.
About the speaker: Silvia Santa Maria Newell is Michigan Sea Grant’s director, based in Ann Arbor at the University of Michigan. A nutrient biogeochemist and microbial ecologist, Silvia’s own research focuses on the effects of excess nutrients from fertilizer and wastewater on inland and coastal waters, particularly harmful algal blooms (HABs) in Lake Erie. Her current collaborative work in the Lake Erie watershed focuses on engaging stakeholders (farmers, managers, and policymakers) to develop realistic pathways for nutrient reduction. She has held many leadership positions, including serving as co-chair of the Great Lakes Commission HABs Collaboratory for two years and her current position as President of the Lake Erie Area Research Network.
In addition to serving as MISG director, Silvia also serves as a professor at the University of Michigan School for Environment and Sustainability.
**Registration is not required**
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IMPORTANT VISITOR INFORMATION
All seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, we encourage you to attend virtually. For questions regarding building access, please email Margaret Throckmorton at throckmj@umich.edu. Additional questions? Contact Margaret Throckmorton: throckmj@umich.edu; visit ciglr.seas.umich.edu for more information.

01/11/24: Plant community dynamics linked to ecosystem biogeochemistry in Great Lakes coastal wetlands: modeling for both basic understanding and management applications
2024-01-11 11:00 - 12:00 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
Please join us for a Great Lakes Seminar Series – subscribe!
Time: 11:00-12:00 pm EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall and Virtual
Presenter: Bill Currie – Professor and Associate Dean for Research and Engagement in SEAS, University of Michigan
Title: Plant community dynamics linked to ecosystem biogeochemistry in Great Lakes coastal wetlands: modeling for both basic understanding and management applications

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Webinar Recording
About the presentation: Linking plant community dynamics to ecosystem processes has long been a central theme in ecological modeling. In this seminar, Bill Currie will present the development and applications of the Mondrian model, which was designed to link across four levels of organization in coastal wetlands: individual plant physiology, plant population dynamics, plant community shifts including invasive species, and ecosystem biogeochemistry including C, N and P cycling. Mondrian is an individual-based model in which spatially-explicit plant competition for resources causes emergent population and community dynamics, which respond to wetland N and P inflows while also driving ecosystem N and P cycling including nutrient retention. At the same time it integrates the effects of dynamic water levels, hydroperiod, and water residence time on both plant survival and ecosystem biogeochemistry, including decomposition, C storage, nitrification and denitrification. It has been used to study clonal plant competition broadly from a basic-science perspective as well as the integrated effects of water level and nutrient inflows on the joint outcomes of wetland C budgets and the success or failure of plant invasions in Great Lakes coastal wetlands. The model has also been used in an adaptive management framework to simulate the outcomes of management practices including burning, mowing, and herbicide to control invasive cattails and Phragmites. The Mondrian model was designed to be highly flexible for use by different research groups for a range of research questions and is available open-source.
About the speaker: Bill Currie is a Professor and Associate Dean for Research and Engagement in SEAS. He is also Co-Director of the Schmidt AI in Science Postdoctoral Fellowship Program at the Michigan Institute for Data Science (MIDAS). Previously, he chaired the Provost’s Faculty Transition Team to plan the new School for Environment and Sustainability, which opened its doors in 2017. Currie is an elected Fellow of AAAS for his work in ecosystem simulation modeling, in which he models forests, human-dominated landscapes, wetlands and coastal ecosystems, biogeochemistry, and water quality. He collaborates with investigators across a range of fields from wildlife conservation to economics, civil engineering, and urban planning to understand human-environment systems. He is PI on the grant to launch the SEAS Sustainability Clinic in Detroit. Currie teaches sustainability using a variety of case studies drawn from the Great Lakes region.
**Registration is not required**
_____________________________________________________
IMPORTANT VISITOR INFORMATION
All seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, we encourage you to attend virtually. For questions regarding building access, please email Margaret Throckmorton at throckmj@umich.edu. Additional questions? Contact Margaret Throckmorton: throckmj@umich.edu; visit ciglr.seas.umich.edu for more information.

12/04/23: How Environmental Justice Law & Policy Has Been Shaping Great Lakes Protection & Restoration
2023-12-04 13:00 - 14:00 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
Please join us for a Great Lakes Seminar Series – subscribe!
Time: 1:00-2:00 pm EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall and Virtual
Presenter: Oday Salim – Environmental Law & Sustainability Clinic Director at the University of Michigan Law School
Title: How Environmental Justice Law & Policy Has Been Shaping Great Lakes Protection & Restoration

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Webinar Recording
About the presentation: There is an all too common misconception that environmental justice law is vague and toothless. In fact, environmental justice law is nearly ubiquitous and has been significantly altering environmental decision-making norms. This talk will address the ways that environmental justice law has already shaped and may in the future shape Great Lakes environmental protection and restoration. Specifically, the talk will define environmental justice law, summarize its history, and go through Great Lakes case studies that illustrate how this legal framework alters decision-making regarding pollution control, natural resources management, and energy regulation.
About the speaker: Oday Salim directs the Environmental Law & Sustainability Clinic at the University of Michigan Law School, where he also co-directs the Environmental Law & Policy Program and teaches the Environmental Justice seminar. In addition, he is an attorney for the National Wildlife Federation in its Great Lakes Regional Center and the chair of the American Bar Association’s Environmental Justice Committee. Professor Salim has taught courses on environmental justice, energy regulation, and mineral law. As an attorney, his most recent work has addressed water affordability, oil pipelines, Clean Water Act permitting, stormwater management, and the public trust doctrine.
**Registration is not required**
_____________________________________________________
IMPORTANT VISITOR INFORMATION
All seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, advance notification of at least 48 hours is needed so that security guidelines are followed. You will need to present your passport (a copy will NOT work). For questions regarding building access, or assistance in obtaining Foreign National clearance, please please call 734-741-2024 or email mike.ryan@noaa.gov. Additional questions? Contact Mary Ogdahl: ogdahlm@umich.edu; visit ciglr.seas.umich.edu for more information.

11/14/23: Bridging Western and Indigenous knowledges through University-Indigenous Community research partnerships: Sharing guidance from the “Seasons of Research” Framework
2023-11-14 12:00 - 13:00 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
Please join us for a Great Lakes Seminar Series – subscribe!
Time: 12:00-1:00 pm EDT
Location: 440 Church St, Ann Arbor, MI 48109, Dana Building, room #1046 and Virtual
Presenter: Valoree S. Gagnon – Assistant Professor, College of Forest Resources and Environmental Science; Director, University-Indigenous Community Partnerships, Great Lakes Research Center; Michigan Technological University
Title: Bridging Western and Indigenous knowledges through University-Indigenous Community research partnerships: Sharing guidance from the “Seasons of Research” Framework

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Webinar Recording
Links of Interest: Bridging Knowledge Systems – Sharing Resources; Bridging Knowledge Systems and Expertise for Understanding the Dynamics of a Contaminated Tribal Landscape System (TLS)
About the presentation: This seminar provides guidance on creating and navigating the pathway to equitable, inclusive research partnerships. What is considered to be ‘normal’ research is in the midst of transformation as participatory, community-engaged research is no longer the exception but the expectation. With the realization that a diversity of stakeholders, rights holders, and research sponsors require more than can be accomplished by the solo investigator, how might one engage in this work in a good way? In this talk, I begin by explaining the term ‘bridging’ as an adaptable/adoptable concept and practice between Western and Indigenous knowledge systems. Then, following a brief description of my research foundations in fish, risk, and health, I outline our current research landscape with/by/as the Anishinaabe Ojibwa. As an example, I emphasize one project in particular that relies on guidance provided by the “Seasons of Research” framework, created in partnership with the Keweenaw Bay Indian Community Lake Superior Band of Ojibwa. In this socio-ecological systems research project (NSF AWARD #2009258), we are examining tribal landscape system (TLS) dynamics impacted by anthropogenic toxic contamination and climate-related changes. I conclude by proposing future directions and good relations for strengthening research partnerships as a shared priority commitment.
About the speaker: Valoree S. Gagnon (she/her/kith/kin; Korean, British/Irish/Scottish) serves as an Assistant Professor in the College of Forest Resources and Environmental Science, and the Director for University-Indigenous Community Partnerships at the Great Lakes Research Center, Michigan Technological University. Gagnon’s interdisciplinary expertise in environmental policy, food sovereignty and community-engaged research focuses on human dimensions of natural resources and the socio-cultural impacts of legacy toxic compounds, particularly on fishing communities. Her research, teaching, and service center on elevating Indigenous peoples and knowledge, facilitating equitable research practice and design, and guiding partnerships that prioritize the protection and restoration of land and life in the Great Lakes region.
**Registration is not required**
_____________________________________________________
IMPORTANT VISITOR INFORMATION
All seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, advance notification of at least 48 hours is needed so that security guidelines are followed. You will need to present your passport (a copy will NOT work). For questions regarding building access, or assistance in obtaining Foreign National clearance, please please call 734-741-2024 or email mike.ryan@noaa.gov. Additional questions? Contact Mary Ogdahl: ogdahlm@umich.edu; visit ciglr.seas.umich.edu for more information.

Postponed: Grant Gunn
2023-10-12 11:00 - 12:00 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
POSTPONED!
Please join us for a Great Lakes Seminar Series – subscribe!
Time: TBD
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall and Virtual
Presenter: Grant Gunn -Assistant Professor, Department of Geography and Environmental Management, University of Waterloo
Title: Bottom Roughness of Freshwater Ice: Impacts on Remote Sensing Observations, and Implications for Underwater Oil Releases

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Webinar Registration: Link
About the presentation: The ice underside in freshwater lakes of various sizes has been observed to be appreciably rough as a function of flow oscillations and pressure ridging in large open lakes, and variability in snow depth modifying the conductive heat flux (i.e. freezing rates) of the lake. In the case of an underwater oil pipeline rupture occurring in the winter, consolidated ice cover serves to both retain buoyant oil and mask the location of the oil to clean-up crews. The storage capacity of freshwater ice is a function of the roughness of the ice-water interface, the magnitude and correlation length of which varies dependent on the weather from year to year. This presentation focuses on preliminary investigations in the Straits of Mackinac which indicates that ice bottom variability in a region with considerable oscillatory flow is 0.3 m3 per m2, similar to that of first year sea ice. Additionally, the implication of ice-bottom roughness also extend to studies with the aim to improve the understanding of microwave interactions with freshwater ice (observed with airborne and spaceborne platforms), which holds potential to detect the presence of under-ice oil.
About the speaker: Dr. Gunn is an Assistant Professor in the Department of Geography and Environmental Management at the University of Waterloo (Canada) and formerly in the Department of Geography at Michigan State University. His expertise lies in the remote observation and retrieval of freshwater ice systems in sub-Arctic and Arctic environments. His research applies emerging technologies including airborne/spaceborne synthetic aperture radar, high-performance cloud computing (e.g. Google Earth Engine), interferometry, polarimetric decomposition and thermodynamic modeling. During his time at MSU, Dr. Gunn investigated the variability of ice properties using ground penetrating radar in the Straits of Mackinac to understand the holding capacity of oil under freshwater ice in the event of a spill in the Great Lakes.
**Registration is not required**
_____________________________________________________
IMPORTANT VISITOR INFORMATION
All seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, advance notification of at least 48 hours is needed so that security guidelines are followed. You will need to present your passport (a copy will NOT work). For questions regarding building access, or assistance in obtaining Foreign National clearance, please please call 734-741-2024 or email mike.ryan@noaa.gov. Additional questions? Contact Mary Ogdahl: ogdahlm@umich.edu; visit ciglr.seas.umich.edu for more information.

07/27/23: Flying Slime: Lakes, Aerosols, and Harmful Algal Blooms
2023-07-27 11:00 - 12:00 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 11:00-12:00 pm EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall and Virtual
Presenter: Andrew Ault – Associate Professor of Chemistry, University of Michigan
Title: Flying Slime: Lakes, Aerosols, and Harmful Algal Blooms

Event flyer
Webinar Recording
About the presentation: Aerosol production from wave breaking is one of the most abundant sources of aerosol globally, but emissions from freshwater lakes (lake spray aerosol, LSA) are poorly understood in comparison to sea spray aerosol (SSA). For calcareous lakes, such as the Laurentian Great Lakes, calcium carbonate is the abundant inorganic species, which can be aerosolized within LSA and undergo heterogeneous reactions similar to sodium chloride in SSA. In addition, harmful algal blooms (HABs) can lead to aerosolization of toxins like microcystins, which has the potential to lead to exposures to local populations. Given their small size and chemical complexity there is a significant analytical challenge when measuring these environmental contaminants. Herein, the chemical and physical properties of LSA from pristine freshwater and HABS are discussed., including measurements of particles along the coasts of the Great Lakes, inland, and aloft at cloud heights from flight measurements using a suite of microscopy, spectroscopy, and mass spectrometry measurements. As LSA can be generated and act as cloud condensation nuclei (CCN) or eject toxic materials from HABs, an improved understanding of LSA emission and physicochemical properties is needed to determine the impacts on meteorology, climate, and health in the Great Lakes and many other regions.
About the speaker: Andrew Ault received his B.A. from Carleton College where he first got involved with oceanic research during a SEA semester program measuring dissolved oxygen and chlorophyll on a sail bot traveling from Hawaii to Alaska. He received his Ph.D. in chemistry from the University of California San Diego where he studied individual particles emitted and transported in the atmosphere with real-time, single particle mass spectrometry under the guidance of Prof. Kim Prather (USCD/SIO). As a postdoc at the University of Iowa he worked with the Center for Aerosol Impacts on Chemistry of the Environment (CAICE) an NSF Center for Chemical Innovation focused on aerosol emission from marine source, blooms, and chemical reactions. In his independent career as a professor at Michigan starting in 2013, he has studied aerosol emissions from the Great Lakes and inland lakes and their reactions in the atmosphere. Recently, his group has focused on aerosolization from cyanobacterial harmful algal blooms (cHABs) and the potential for emissions of toxins. His group has identified significant concentrations of toxins in aerosols, different toxins and peptides.
**Registration is not required**
_____________________________________________________
IMPORTANT VISITOR INFORMATION
All seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, advance notification of at least 48 hours is needed so that security guidelines are followed. You will need to present your passport (a copy will NOT work). For questions regarding building access, or assistance in obtaining Foreign National clearance, please please call 734-741-2024 or email mike.ryan@noaa.gov. Additional questions? Contact Mary Ogdahl: ogdahlm@umich.edu; visit ciglr.seas.umich.edu for more information.

04/20/23: David Cannon, Candidate Seminar: Assistant Research Scientist in Hydrodynamics
2023-04-20 12:00 - 13:00 | School of Natural Resources and the Environment, Dana Building, 440 Church St, Ann Arbor, MI, 48109, United States
Please join us for a Candidate Seminar: Assistant Research Scientist in Hydrodynamics:
Time: 12:00-1:00 pm EST
Location: Room 2024, School for Environment and Sustainability, Dana Building, University of Michigan or via Zoom
Presenter: David Cannon, Postdoctoral Fellow, University of Michigan, CIGLR
Title: Leveraging Hydrodynamic Models and Observations to Inform Coastal Management
Zoom Link: https://umich.zoom.us/j/93722688401
Event Flyer

**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

04/11/23: Dani Jones, Candidate Seminar: Assistant Research Scientist in Hydrodynamics
2023-04-11 12:00 - 13:00 | School of Natural Resources and the Environment, Dana Building, 440 Church St, Ann Arbor, MI, 48109, United States
Please join us for a Candidate Seminar: Assistant Research Scientist in Hydrodynamics:
Time: 12:00-1:00 pm EST
Location: Room 2024, School for Environment and Sustainability, Dana Building, University of Michigan or via Zoom
Presenter: Dani Jones, Physical Oceanographer, British Antarctic Survey
Title: Windows to the Deep: Local and Remote Controls on Ocean Ventilation: How Adjoint Modeling and Machine Learning Help Untangle Ocean Structure and Sensitivity
Zoom Link: https://umich.zoom.us/j/99696795270
Event Flyer

**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

04/06/23: Jungwoo Lee, Candidate Seminar: Assistant Research Scientist in Hydrodynamics
2023-04-06 12:00 - 13:00 | School of Natural Resources and the Environment, Dana Building, 440 Church St, Ann Arbor, MI, 48109, United States
Please join us for a Candidate Seminar: Assistant Research Scientist in Hydrodynamics:
Time: 12:00-1:00 pm EST
Location: Room 2024, School for Environment and Sustainability, Dana Building, University of Michigan or via Zoom
Presenter: Jungwoo Lee
Title: New Modeling Journey for the Great Lakes
Zoom Link: https://umich.zoom.us/j/98944625402
Event Flyer

**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

02/09/23: Yi Hong, Candidate Seminar: Assistant Research Scientist in Hydrology
2023-02-09 12:00 - 13:00 | School of Natural Resources and the Environment, Dana Building, 440 Church St, Ann Arbor, MI, 48109, United States
Please join us for a Candidate Seminar: Assistant Research Scientist in Hydrology:
Time: 12:00-1:00 pm EST
Location: Room 2024, School for Environment and Sustainability, Dana Building, University of Michigan or via Zoom
Presenter: Yi Hong – Postdoctoral Fellow, University of Michigan, CIGLR
Title: Integrated and cross-scale modeling of hydrologic/hydrodynamic processes for sustainable water management
Zoom Link: https://umich.zoom.us/j/99322859973
Event Flyer

**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

07/14/22: Sara Hughes
2022-07-14 14:00 - 15:00 | Virtual
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 2:00-3:00 pm EST
Location: Virtual
Presenter: Sara Hughes – Associate Professor in the School for Environment and Sustainability at the University of Michigan
Title: Interdisciplinary Perspectives on Equitable Urban Climate Change Adaptation in the Great Lakes
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Webinar Recording
About the presentation: Planning for climate change is critical for cities in the Great Lakes region. Preparing for changes in urban flooding frequency and severity is particularly important as precipitation during heavy rain events has increased, stormwater infrastructure is aging, and flood risk is distributed unevenly across and within communities. These adaptations require strong scientific foundations as well as political will, planning capacity, and community-driven decision making. In this talk I will discuss completed and ongoing research that aims to support equitable urban adaptation in the Great Lakes and improve our understanding of opportunities and challenges in this space.
About the speaker: Sara Hughes is an Associate Professor of Environmental Policy and Planning in the School for Environment and Sustainability at the University of Michigan and Associate Director of the Cooperative Institute for Great Lakes Research. Her research focuses on environmental policy agendas, policy analysis, and governance processes, focusing on decisions about water resources and climate change. Current projects examine the political and institutional dimensions of equitable access to safe and affordable drinking water in the U.S.; the role of municipal finances in drinking water management and investments; and urban climate change governance, including equitable approaches to building urban climate resilience. Information about current projects can also be found on the Water and Climate Policy Lab’s webpage: www.waterclimatepolicy.org.
**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

05/10/22: Cody Sheik
2022-05-10 14:00 - 15:00 | Virtual
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 2:00-3:00 pm EST
Location: Insight into the past and present cyanobacterial blooms in Lake Superior
Presenter: Cody Sheik – Assistant Professor, Swenson College of Science and Engineering, University of Minnesota-Duluth
Event Flyer
Webinar Registration: https://register.gotowebinar.com/register/2538719994808348432
About the presentation: Cyanobacteria are extraordinary chemists that are integral to all surficial water ecosystems. As primary producers, they provide carbon and oxygen that drives heterotrophic productivity. Furthermore, the ability of some cyanobacterial species to fix nitrogen gives these groups a multifaceted ecosystem role. However, cyanobacterial overgrowth, e.g., cyanobacterial blooms, is increasing in intensity, duration, and severity in nearly all freshwater ecosystems. While the lower Laurentian Great Lakes (Lake Erie and Ontario) are prone to toxin-producing cHABs, Lake Superior, until recently, has not seen regular cHAB occurrences. The recent uptick in cyanobacterial blooms is unsettling and may be a harbinger of the changing chemical and physical characteristics of the lake. In my presentation I will talk about the changing nitrogen landscape of Lake Superior and focus on the presence of nitrogen fixing cyanobacterial blooms observed in Lake Superior.
About the speaker: Dr. Sheik received his B.S. in Zoology (2004) and PhD in Microbial Ecology (2011) from the University of Oklahoma. After graduation, he completed a postdoctoral position at the University of Michigan before coming to UMD in 2015. Dr. Sheik is a geomicrobiologist whose work in aquatic systems is at the intersection of three fields: microbiology, ecology, and geochemistry/geology. His lab currently investigates the microbiology of the deep subsurface, sediments, surface waters, and harmful algal blooms. His research seeks to understand how microorganisms mediate biogeochemical cycles, with emphasis on carbon, nitrogen, and sulfur in these disparate ecosystems.
**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

04/25/22: Jonathan Edwards-Opperman
2022-04-25 14:00 - 15:00 | Virtual
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 2:00-3:00 pm EST
Location: Virtual
Presenter: Jonathan Edwards-Opperman, NOAA National Ice Center
Title: Evolving the U.S. National Ice Center’s Great Lakes Products and Services

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Webinar Recording
About the presentation: The U.S. National Ice Center (USNIC) is a tri-agency organization comprised of personnel from the National Oceanic and Atmospheric Administration (NOAA), U.S. Navy, and U.S. Coast Guard with a mission to provide global to tactical scale ice and snow products, ice forecasting, and other environmental intelligence services to the United States government.
The USNIC’s primary Great Lakes product is a daily analysis of ice conditions across the region. Recently, USNIC has been working to evolve its products and services to better serve customers. Access to new satellite imagery, environmental modeling datasets, and technological advances are driving this initiative. Results have and will continue to provide a more robust Impact-Based Decision Support Service (IDSS) program for core partners operating in the Great Lakes during the ice season, the use of new satellite imagery and model data, and investigation of potential new products serving increased value to the end user.
This seminar will cover our current Great Lakes operations as well as our vision to evolve our products and services in the future.
About the speaker: Jonathan Edwards-Opperman attended the Georgia Institute of Technology and received his B.S. in Earth and Atmospheric Sciences in 2014. While in his senior year, Jonathan worked with the National Weather Service in Peachtree City, Georgia on winter weather research related to operational forecasting. After completing his undergraduate degree, Jonathan attended the University of Oklahoma and received his M.S. in Meteorology in 2016 and remained affiliated with the university until 2017. While at the University of Oklahoma, Jonathan’s research focus was on polar meteorology.
In 2018, Jonathan joined the USNIC as a snow and ice analyst working on the Interactive Multisensor Snow and Ice Mapping System. In 2020, his role at USNIC changed when he accepted a position as Physical Scientist serving as the USNIC’s CONUS Lead Ice Analyst covering the Great Lakes, Mid-Atlantic, and northeastern coast of the United States.
**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

03/23/22: Jordon Beckler
2022-03-23 13:00 - 14:00 | Virtual
Please join us for a Virtual Great Lakes Seminar Series presentation:

Time: 1:00-2:00 pm EST
Location: Virtual
Presenter: Jordon Beckler – Assistant Research Professor, Geochemistry and Geochemical Sensing Lab, Florida Atlantic University Harbor Branch Oceanographic Institute & Institute for Sensing and Embedded Network Systems Engineering (I-SENSE)
Title: The Harmful Algal Bloom Assessment of Lake Okeechobee (HALO): Innovative monitoring technologies providing multidisciplinary insights into HAB dynamics and internal nutrient loading
Event Flyer
Webinar Recording
About the presentation: Annual blooms of Microcystis aeruginosa on Lake Okeechobee have increased in intensity over the last few decades, drastically affecting lake water quality and ecology as well as the health of surrounding coastal water bodies receiving lake inflows. As part of the State of Florida Harmful Algal Bloom (HAB) Innovative Technologies program, our team employed a comprehensive suite of innovative monitoring technologies alongside more conventional techniques over CY 2021to unravel HAB ecological, optical, and biogeochemical dynamics. Some techniques to be highlighted included remote sensing (satellite and a long-duration fixed-location i.e. Seaprism), in situ holography (AUTOHOLO), acoustic sensing (AZFP), an Autonomous Surface Vehicle, and fixed-location water quality sensors (LOBOs). This presentation will focus, however, on novel findings related to sediment biogeochemistry and internal nutrient loading. We combined routine sediment sampling and analyses with deployments of a novel benthic lander for in situ nutrient and toxin flux monitoring. To better understand the controls of sediment nutrient generation and release, we obtained voltammetric (electrochemical) measurements of the sediment respiratory environment (aerobic and anaerobic respiration). Findings suggest that both nitrogen and phosphorous speciation and solubility may be coupled to iron cycling via mineral associations and iron-catalyzed transformations, and that diffusive vs. resuspension fluxes play disparate roles with respect to nitrogen vs. phosphorous benthic fluxes. Overall, these dependencies may regulate both the intensity and timing of HABs over hourly to decadal timescales, with important implications for both passive and active mitigation strategies.
About the speaker: Dr. Beckler is an Assistant Research Professor at Florida Atlantic University, with a joint appointment with the Harbor Branch Oceanographic Institute, the Institute of Sensing and Embedded Network and Systems Engineering (I-SENSE), and the Chemistry Department. As the PI of the Geochemistry and Geochemical Sensing Lab, his group’s research centers around unraveling sediment biogeochemical processes in near-surface sediments and connections to ecosystem health. The lab develops and commercializes innovative technologies for monitoring sediment geochemistry (microbial respiration pathways/redox/nutrients) and exchanges with the water column (benthic fluxes). Current projects include monitoring Lake Okeechobee harmful algae blooms (FL DEP, EPA), the fluxes of carbon, iron, and CDOM from continental margin areas (NASA), and the exploration of submarine sink “blue holes” offshore in the Gulf of Mexico (NOAA).
**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

02/22/22: Branko Kerkez
2022-02-22 13:30 - 14:30 | Virtual
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 1:30-2:30 pm EST
Location: Virtual
Presenter: Branko Kerkez – Associate Professor, Intelligent Systems, Berker and Gokyigit Faculty Scholar, Civil and Environmental Engineering, University of Michigan
Title: Self-Driving Water Systems
Seminar Flyer
Webinar Recording
About the presentation: In the era of digital assistants, autonomous cars, and smart toasters, should we embed the same level of intelligence into water systems? The answer is not clear cut, largely because the conversation is still obfuscated by buzzwords and hype. This talk will attempt to demystify and make accessible the building blocks of autonomous water systems. We’ll explore promising real-world examples of smart watersheds and “self-driving” urban drainage systems. Autonomous watersheds have the potential to vastly shrink the size of infrastructure needed to manage runoff pollution and flooding. We will give examples of promising smart water test beds, while also describing how to find useful data in unexpected places. As with any new tech, there are inherent risk to adoption. When compared to doing business as usual, however, the time appears better than ever to embrace new technologies for water management.
About the speaker: Branko Kerkez is the Arthur F. Thurnau Associate Professor of Civil and Environmental Engineering at the University of Michigan. His research interests include water, data, and sensors. His group is working to enable smart water systems, which autonomously adapt themselves to changing conditions using real-time data and controls. His research projects have spanned wireless sensing of large mountain basis, real-time flood forecasting, robotics, and real-time control algorithms for water systems. He is the founder of Open-Storm.org, an open-source consortium dedicated to freely sharing hardware, software, and case studies on smart water systems. He received his M.S. and Ph.D. in Civil and Environmental Engineering, and an M.S. in Electrical Engineering and Computer Science, all from UC Berkeley. He is a recipient of the National Science Foundation’s CAREER award and was recognized by National Academy of Engineering as a Gilbreth Lecturer.
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

1/11/22: Rebecca Klaper
2022-01-11 13:00 - 14:00 | Virtual
Please join us for a Great Lakes Seminar Series presentation:
Time: 1:00-2:00 pm EST
Location: Virtual
Presenter: Rebecca Klaper, Vice Dean, Professor, Director of the Great Lakes Genomics Center – University of Wisconsin Milwaukee
Title: Building the environmental science toolbox to address the complexity of exposures and effects of emerging contaminants
Event Flyer
Webinar Recording
About the presentation: As a human population we use and are exposed to hundreds of chemicals each day, many of which are ultimately emitted into aquatic and terrestrial systems where other organisms are in turn exposed to these same chemicals. Assessing the impact of these chemicals in the environment has been a complex problem. Chemical composition and concentration vary over time and space and contaminants often occur as mixtures and therefore are difficult to characterize. Assessing the risk from these exposures is equally complex as research has shown that chronic low-level exposures have impacts on biochemical pathways that were not normally considered when evaluating safety. In addition, any one compound may occur at a dose that is below a traditional threshold of harm, yet the timing of exposure or exposure to a combination of chemicals ultimately can cause an effect. New chemicals in the marketplace, such as nanomaterials or new pharmaceuticals, present new questions as to their biological interactions and how best to determine their potential environmental impact. Research over the last 20 years has transformed the toolbox available to the field of environmental science to determine the extent to which these emerging contaminants impact organisms in aquatic environments. This presentation will discuss the innovations being made, through for example genomic technologies and in vitro screening, that advance our understanding of the interaction of emerging contaminants and organisms across phyla. Linking these technologies to environmental studies further builds the toolbox that can be used to better determine the safety of new chemicals and their environmental impact across organisms and ecosystems.
About the speaker: Rebecca D. Klaper is the Vice Dean and a Professor at the School of Freshwater Sciences, University of Wisconsin-Milwaukee. Professor Klaper studies the potential impact of emerging contaminants, such as nanoparticles and pharmaceuticals on aquatic life and how we may design these chemicals to have the least environmental impact. In addition, she has examined the transport of these chemicals through the wastewater treatment systems and into the environment and how different treatment technologies may remove them from the waste stream. Her research links the impact of these chemicals on the health of aquatic species to that of human health. She uses genomic technologies to determine how these chemical stressors may impact organisms and how the biochemical response may dictate sensitivity or resistance to stressors. As Director of the Great Lakes Genomics Center she seeks to support other researchers that are using genomic technologies for environmental research. Prof. Klaper has received a Fulbright Scholarship (U.K., 2017-2018) and a AAAS-Science and Technology Policy Fellowship. She has served as an invited scientific expert to both the U.S. National Nanotechnology Initiative and the international Organization for Economic and Cooperative Development panel on nanotechnology, the Alliance for the Great Lakes and the International Joint Commission regarding the potential impacts of nanomaterials, pharmaceuticals and personal care products and other emerging contaminants. She has served on the National Academies Panel on the Environmental Impact of Currently Marketed Sunscreens and Potential Human Impacts of Changes in Sunscreen Usage and another to Develop a Research Strategy for Environmental, Health, and Safety Aspects of Engineered Nanomaterials as well as the U.S. EPA Board of Scientific Counselors committee on Chemical Safety and Sustainability. Prof. Klaper received her Ph.D. in Ecology from the Institute of Ecology, University of Georgia.
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

12/06/21: Michael McKay
2021-12-06 14:00 - 15:00 | Virtual
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 2:00-3:00 pm EST
Location: Virtual
Presenter: Michael McKay – Executive Director and Professor; Great Lakes Institute for Environmental Research; University of Windsor
Title: Life under ice: The rise and fall of Lake Erie’s winter algal bloom
Event Flyer
Webinar Recording
About the presentation: Ice cover presents a logistical obstacle to our full understanding of function of north temperate ecosystems. Reflecting this, ecosystem models frequently underestimate, or even neglect biological parameters associated with ice cover. Despite the perceived inhospitable environment imposed by cold temperatures and ice cover during winter in Lake Erie, work over the past decade has revealed numerous examples of high biological activity with abundant phytoplankton biomass dominated by psychrophilic, filamentous diatoms. The diatoms are physiologically robust and the diatom bloom persists through early spring, eventually contributing to carbon export in Lake Erie’s central basin. During mild winters, the bloom is reduced, likely due to light limitation coincident with deep wind-aided mixing. These surveys have demonstrated that diatom assemblages possess ice nucleating abilities, a characteristic promoting ice formation and which enables the winter diatoms to maintain a favorable position in the photic zone when the lake is ice covered. Our recent efforts have focused on mechanisms of bloom decline where chytrid parasites and other pathogens are implicated. Broadening the impact of this research has been a unique partnership with the U.S. Coast Guard promoting citizen science in support of winter data collection.
About the speaker: In 2019, Mike McKay joined the University of Windsor where he serves as the Executive Director of the Great Lakes Institute for Environmental Research and Professor in the School of the Environment. Mike received undergraduate- and graduate degrees in Biology from Queen’s University at Kingston and McGill University (Montréal), respectively. Upon completion of his doctoral work, he held postdoctoral fellowships at the University of Alaska Fairbanks and with the University of Delaware where he served concurrently at the Department of Energy’s Brookhaven National Laboratory on Long Island, NY. It was during this period that Mike became active in research on aquatic nutrient cycling through his involvement with the ecosystem-scale ocean iron fertilization projects being conducted by scientific personnel from Brookhaven at that time. Mike’s research expanded to include large lakes on his arrival to Bowling Green State University where he served on the faculty for over 21 years studying the biogeochemical cycling of nutrients, phytoplankton and bacterial community dynamics and more recently, winter limnology involving research coordination with icebreaking programs of Canadian- and U.S. Coast Guards.
Among Mike’s research honors, he was awarded an Alexander von Humboldt Foundation Research Fellowship in 2005 where he was resident at the Helmholtz Centre for Ocean Research Kiel (Germany) and in 2013, was named Visiting Scholar at the Large Lakes Observatory of the University of Minnesota. He is the author of over 95 peer-reviewed manuscripts, is a co-recipient of the 2019 John Martin award from ASLO and currently serves as an Associate Editor for the Journal of Great Lakes Research.
**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

11/18/21: Silvia Newell
2021-11-18 14:00 - 15:00 | Virtual
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 2:00-3:00 pm EST
Location: Virtual
Presenter: Silvia Newell – Associate Professor, Wright State University
Title: Nitrogen availability as a driver of HABs and toxins: the missing piece for modeling?
Event Flyer
Webinar Recording
About the presentation: External nutrient loading (along with temperature and precipitation) is the main driver of annual harmful algal blooms in Lake Erie. These blooms are dominated by the cyanobacteria Microcystis, which produces microcystin toxins, but toxicity and biomass are not always correlated and can vary from year to year and within a season. Microcystis is an excellent scavenger for ammonium and can outcompete other organisms for this preferred ammonium supply. Ammonium is therefore both taken up by cells and recycled rapidly in eutrophic systems, making it difficult to determine availability snapshot concentration measurements. Studies on ammonium turnover rates in the water column of Lake Erie, as well as supply from sediments, suggest that internal loading is a critical component of sustaining bloom biomass. Using ammonium recycling rates in mixed models also results in strong models for concentration of microcystins (R^2 =0.84 or better), suggesting that ammonium availability might be key for modeling and predicting bloom toxicity.
About the speaker: Dr. Silvia Newell is an Associate Professor of Aquatic Biogeochemistry at Wright State University in Dayton, OH. Her research focuses on nitrogen cycling in eutrophic systems around the globe, from the Great Lakes to Lake Okeechobee to Taihu, China. She was the co-chair of the HABs Collaborative from 2018-2020 and currently serves as the President of the Lake Erie Area Research Network. She is currently NSF-funded on projects in Lake Superior, Lake Erie, and the Maumee River. She is also part of the monitoring team assessing the H2Ohio wetlands.
**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

05/05/21: Rajendra Poudel
2021-05-05 13:00 - 14:00 | Virtual
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 1:00-2:00 pm EST
Location: Virtual
Presenter: Rajendra Poudel – CollabraLink Tech, NOAA OAR
Title: Economic Value of Selected Wetlands in the United States
Event Flyer
Webinar Registration: https://register.gotowebinar.com/register/8896196273847640590
About the presentation: This research provides a benefit transfer model of willingness-to-pay (WTP) for wetlands’ conservation in the United States. The validity of the estimated wetland’s willingness-to-pay values is also examined. This study extends and provides improvements to wetlands valuation literature by using information obtained from 21 study sites – 19 natural and 2 constructed. Benefit transfer values for wetlands are imputed to six policy wetland sites – 5 natural and 1 constructed. Regression results are reported for one of eight models estimated and examined with four validity tests. Based on these tests, transfer error adjustments of WTP estimates for policy sites are reported.
Keywords: benefit transfer, meta-analysis, policy sites, study sites, valuation, and wetland
About the speaker: Rajendra Poudel holds a doctorate degree in Forestry Economics and is a lead economist in CollabraLink Tech works in Oceanic and Atmospheric Research/NOAA, Silver Spring, MD. Dr. Poudel also worked as a postdoctoral fellow in University of Minnesota, Duluth on ecosystem service of largest freshwater lakes on earth. His career interest is in natural resources policy with particular emphasis on environmental conservation, boosting economy, and national security.
**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

12/09/20: Charles Menza
2020-12-09 13:00 - 14:00 | Virtual
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 1:00-2:00 pm EST
Location: Virtual
Presenter: Charles Menza, (NOAA National Ocean Service, National Centers for Coastal Ocean Science, Marine Spatial Ecology Division, Biogeography Branch. Silver Spring, MD)
Title: Characterizing benthic habitats using remotely-sensed bathymetry and reflectance in high-priority areas of the Great Lakes
Event Flyer
Webinar Recording
About the presentation: Remotely-sensed bathymetry and reflectance data are ideal for identifying and characterizing benthic habitats across the Great Lakes. They generally are collected over large swaths of area, provide data at sufficient spatial resolution to discriminate among important features and substrates, and are very accurate. An added bonus is that much of the nearshore zone of the Great Lakes already has remotely-sensed bathymetry and reflectance data. In this seminar I will present a collaborative effort by the National Centers for Coastal Ocean Science, the Office of National Marine Sanctuaries and the Great Lakes Environmental Research Laboratory to explore and characterize benthic habitats in Lakes Michigan and Huron. This effort includes collection and analysis of new multibeam bathymetry surveys, interpretation of existing nearshore LiDAR surveys, and ground-truthing from underwater videos at over 800 sites. When brought together these data provided digital maps characterizing the geomorphology, substrate composition and biological cover across 150 square kilometers of lakebed. I will discuss key strategies important to starting similar mapping efforts and scaling up, such as map prioritizations, predictive habitat modeling, and digital habitat map dissemination.

About the speaker: Charles Menza is senior scientist at the NOAA National Centers for Coastal Ocean Science in Silver Spring, Maryland. Mr. Menza is a spatial ecologist focused on habitat mapping and modeling which supports spatial planning in the ocean and Great Lakes. For the past 7 years he has worked alongside the Office of National Marine Sanctuaries in the Great Lakes and has led several field missions to map underwater habitats.
**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

11/03/20: Jay Martin
2020-11-03 13:00 - 14:00 | Virtual
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 1:00-2:00 pm EDT
Location: Virtual
Presenter: Jay Martin, Ohio State University
Title: Developing a Public-Private Partnership to Manage Elevated Phosphorus Fields For Agricultural Production and Water Quality
Event Flyer
Webinar Recording
About the presentation: We established a Private Public Partnership (PPP) to identify and manage agricultural fields in the Western Lake Erie Basin where large reductions in phosphorus are likely to be realized. Fields with high risk of phosphorus runoff were identified based on soil test phosphorus levels two times greater than agronomic recommendations. Phosphorus runoff from these fields cannot be managed by only in field practices because fertilizer application is not required for crop production. Therefore, to further reduce phosphorus runoff from these sites requires the use of edge of field BMPs. Establishing a PPP allowed private partners to maintain proprietary data while assisting the public partners in identifying fields with high risk of phosphorus loss. The private partners, farmers and their consultants, best know their field characteristics and can facilitate field identification and the selection of conservation plans that are likely to be effective. Through collaboration with 4R Certification Program, Nutrient Service Providers, and farmers we are implementing and monitoring the impacts of conservation practices on 14 elevated phosphorus fields in the Maumee Watershed. Preliminary results from the project will describe the characteristics and runoff water quality from elevated phosphorus fields. The structure and results from this research demonstrate the value of collaborating with NSPs to identify legacy sources of nutients, and the value of forming PPPs when proprietary information can limit the identication and accessibility of sites where environmental management practices can be most beneficial.

About the speaker: Jay Martin is a professor of ecological engineering who analyzes and integrates human and natural systems. As a faculty member in the Department of Food, Agricultural and Biological Engineering and a Faculty co-lead for the OSU Sustainability Institute, he seeks to use natural systems to improve water quality and increase sustainability. His interdisciplinary research links field studies, watershed models, and socio-economic analyses with stakeholder groups to investigate connections between downstream water quality and management practices in upstream watersheds.
Currently, Dr. Martin is leading a $5M USDA-NIFA project to establish a Public-Private Partnership with crop consultants and farmers, to identify fields with elevated nutrient levels where management practices will be installed and monitored in an effort to reduce nutrient runoff. He is also leading an interdisciplinary research team to evaluate the impacts of a large green infrastructure project, “Blueprint Columbus,” on water, communities, ecosystems, economics and public health within the City of Columbus. Outside of Ohio, Dr. Martin’s other research has included Mayan agroecosystems in southern Mexico, biodigesters in Costa Rica, Andes wetlands in Colombia, and the use of algae as a soil amendment by Oʻahu farmers in Hawaii. As of 2019, he has published over 65 peer-reviewed articles, successfully advised over 35 Graduate Students and Post Docs, and been awarded more than $17M to support his research program. He is certified as a Senior Ecologist by the Ecological Society of America and a Professional Engineer in Ohio.
**Registration is not required**
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

08/12/20: Max Herzog
2020-08-12 13:00 - 14:00 | Virtual, Ann Arbor, MI, 48104, United States
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 1:00-2:00 pm EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall
Presenter: Max Herzog, Cleveland Water Alliance
Title: Building a Smart Lake Erie
Event Flyer
Webinar Recording
About the presentation: Innovation has long been a part of life and work on Lake Erie. Its unique water resources set the stage for one of humanity’s greatest periods of technological advancement and continues to drive one of the most dynamic regional economies on the globe. Yet, despite its essential role in commerce, industry, and entrepreneurship, Lake Erie has been historically underleveraged as an economic asset and catalyst of innovation.
The 2014 Toledo Water Crisis began to change all of that. Lake Erie communities were galvanized to action as over 500,000 residents were denied access to safe public drinking water for three days. Harmful Algal Blooms threatened an estimated $1.5 Billion of negative regional economic impact over the next three decades; It became clear that a new set of solutions were required to address the scale of our water quality challenges.
As a result, the states of Michigan and Ohio as well as the province of Ontario committed to reduce their joint nutrient pollution of the Lake by 40% by 2040. While this goal was ambitious and necessary, it was not accompanied by a corresponding investment in monitoring infrastructure. This means that it is near impossible to reliably measure progress towards that goal at a macro scale and the efficiency of individual mitigation efforts on a micro scale.
Hence the need for a Smart Lake. This new breed of Smart & Connected Infrastructure creates and leverages the data required to enable intelligent regional water management by a cross-sector collaborative of institutions and communities. This solution will function by delivering three fundamental interventions in the system producing HABs:
– Open Water: Predictive analytics and integrated sensing deliver accurate warnings that mitigate direct impacts.
– Rural & Urban Watersheds: Distributed IoT sensing and intelligent green infrastructure evaluate and optimize mitigation efforts
– Edge-of-Field: Real-time sensing and control actively mitigate nutrient runoff and deliver ROIs for agricultural best practices
About the speaker: Max Herzog is an Impact Innovation Professional dedicated to engaging diverse stakeholders in the development of tools and strategies that drive community development and resilience at the regional level. Max is currently working on next-generation water technology and intelligent water systems with the Cleveland Water Alliance. In his three years with CWA, Max has spearheaded and contributed to regional innovation initiatives that activated over fifty entrepreneurial water solutions and one hundred stakeholder organizations from Windsor to Buffalo. As Program Manager, he coordinates the bi-national ecosystem of partners that drive the Water Alliance’s cluster of programs and technologies.
At Oberlin College, where he earned Bachelor’s degrees in political science and environmental studies, Max participated in sustainable consulting projects with Foresight Design Initiative and social-impact research with The Oberlin Research Group. He also worked to educate youth on a variety of topics, including sustainable food systems and urban planning and design, with the Foresight Prep Seminars.
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

07/22/20: Aaron Fisk
2020-07-22 14:00 - 15:00 | Virtual, Ann Arbor, MI, 48104, United States
Please join us for a Virtual Great Lakes Seminar Series presentation:
Time: 2:00-3:00 pm EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall
Presenter: Aaron Fisk, University of Windsor
Title: New Insights and Future Direction in Great Lakes Food Web Research
Event Flyer
Webinar Recording
About the presentation: Food webs are a representation of trophic relationships between organisms within an ecosystem and have been a central tenet in ecology for almost a century. Quantifying connections and the strength of energy and biomass pathways in food webs are a key component to effective management and conservation of ecosystem services, particularly fisheries. The rich history of fish diet and food web research in the Great Lakes, with its high biodiversity and variable habitats, has increased our understanding of mechanisms and processes that underpin aquatic food web structure and function. This seminar will present comparisons of trophic relationships across the five Great Lakes using stable isotope data recently generated through comprehensive sampling plans from the CSMI program. Key unknowns in Great Lakes food webs and new methods to assess the diet of organisms will reviewed and critiqued.

About the speaker: Aaron Fisk is Professor and Tier 1 Canada Research Chair (CRC) in Changing Great Lakes Ecosystems in the School of the Environment and GLIER at the University of Windsor. His research is focused on animal movements and food webs, mainly in the Great Lakes, but also in the Arctic and tropical marine environments. He has > 250 career journal publications with an H-index of 62 and more than 14,500 citations on Google Scholar. In his 12 years at UWindsor, he has secured more than $23 million in direct funding, including the recently funded Real Time Aquatic Ecosystem Observation network (RAEON) – a $15.9 million investment in infrastructure to study the Great Lakes, and recently held a Pew Fellowship in Marine Conservation on integrating Inuit fisherman into the management of fish stocks. Eleven of his former students and post doc hold tenure track faculty positions in Canada, USA and Norway.
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

POSTPONED; Date TBD
2020-06-02 10:30 - 11:30 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
The June 2 seminar is postponed to a future TBD date.
Please join us for a Great Lakes Seminar Series presentation:
Time: 10:30-11:30 am EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall
Presenter: John Kelly (Loyola University Chicago) & John Scott (University of Illinois)
Title: TBD
About the presentation: TBD

About the speaker: TBD
**Registration is not required, however please note important visitor information**
Important Visitor Information
All in-person seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Seminar attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, advance notification of at least 48 hours is needed so that security guidelines are followed. You will need to present your passport (a copy will NOT work). For questions regarding building access, or assistance in obtaining Foreign National clearance, please call 734-741-2394. Email contact: Scott.Purdy@noaa.gov
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

POSTPONED; Date TBD
2020-03-31 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
The March 31 seminar is postponed to a future TBD date.
Please join us for a Great Lakes Seminar Series presentation:
Time: 1:30-2:30 pm EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall
Presenter: Dr. Michael McKay, Executive Director and Professor – Great Lakes Institute for Environmental Research
Title: Life under ice: The rise and fall of Lake Erie’s winter algal bloom
Event Flyer
Webinar Registration: https://attendee.gotowebinar.com/register/5710606513973740043
About the presentation:Ice cover presents a logistical obstacle to our full understanding of function of north temperate ecosystems. Reflecting this, ecosystem models frequently underestimate, or even neglect biological parameters associated with ice cover. Despite the perceived inhospitable environment imposed by cold temperatures and ice cover during winter in Lake Erie, work over the past decade has revealed numerous examples of high biological activity with abundant phytoplankton biomass dominated by psychrophilic, filamentous diatoms. The diatoms are physiologically robust and the diatom bloom persists through early spring, eventually contributing to carbon export in Lake Erie’s central basin. During mild winters, the bloom is reduced, likely due to light limitation coincident with deep wind-aided mixing. These surveys have demonstrated that diatom assemblages possess ice nucleating abilities, a characteristic promoting ice formation and which enables the winter diatoms to maintain a favorable position in the photic zone when the lake is ice covered. Our recent efforts have focused on mechanisms of bloom decline where chytrid parasites and other pathogens are implicated. Broadening the impact of this research has been a unique partnership with the U.S. Coast Guard promoting citizen science in support of winter data collection.

About the speaker: In 2019, Mike McKay joined the University of Windsor where he serves as the Executive Director of the Great Lakes Institute for Environmental Research and Professor in the School of the Environment. Mike received undergraduate- and graduate degrees in Biology from Queen’s University at Kingston and McGill University (Montréal), respectively. Upon completion of his doctoral work, he held postdoctoral fellowships at the University of Alaska Fairbanks and with the University of Delaware where he served concurrently at the Department of Energy’s Brookhaven National Laboratory on Long Island, NY. It was during this period that Mike became active in research on aquatic nutrient cycling through his involvement with the ecosystem-scale ocean iron fertilization projects being conducted by scientific personnel from Brookhaven at that time. Mike’s research expanded to include large lakes on his arrival to Bowling Green State University where he served on the faculty for over 21 years studying the biogeochemical cycling of nutrients, phytoplankton and bacterial community dynamics and more recently, winter limnology involving research coordination with icebreaking programs of Canadian- and U.S. Coast Guards.
Among Mike’s research honors, he was awarded an Alexander von Humboldt Foundation Research Fellowship in 2005 where he was resident at the Helmholtz Centre for Ocean Research Kiel (Germany) and in 2013, was named Visiting Scholar at the Large Lakes Observatory of the University of Minnesota. He is the author of over 95 peer-reviewed manuscripts, is a co-recipient of the 2019 John Martin award from ASLO and currently serves as an Associate Editor for the Journal of Great Lakes Research.
**Registration is not required, however please note important visitor information**
Important Visitor Information
All in-person seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Seminar attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, advance notification of at least 48 hours is needed so that security guidelines are followed. You will need to present your passport (a copy will NOT work). For questions regarding building access, or assistance in obtaining Foreign National clearance, please call 734-741-2394. Email contact: Scott.Purdy@noaa.gov
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

03/3/20: Maureen Coleman
2020-03-03 13:00 - 14:00 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
Please join us for a Great Lakes Seminar Series presentation:
Time: 1:00-2:00 pm EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall
Presenter: Maureen Coleman, University of Chicago
Title: Linking microbial communities and biogeochemistry across the Laurentian Great Lakes
Event Flyer
Webinar Recording
About the presentation: The Laurentian Great Lakes hold 20% of Earth’s surface freshwater and provide essential ecosystem services. Moreover, as an interconnected waterway that spans strong environmental gradients, the Great Lakes represent a unique natural laboratory for understanding how physical, chemical, and biological forces interact to shape microbial communities and biogeochemistry. Here we explore the drivers of microbial diversity and activity across the Great Lakes, using samples collected as part of an ongoing multi-year time series. First we characterized community composition across lakes, depths, seasons, and years. We found that depth and light are strong drivers of community structure in stratified water columns. Across surface waters, we found distinct microbial signatures in each of the Great Lakes, reflecting their biogeochemical variability. To explore metabolic functions, we reconstructed hundreds of microbial genomes and created a microbial tree of life for the Laurentian Great Lakes. We mapped ecological distribution patterns for these genomes and found distinct distributions for taxa and metabolisms across lakes and depths. We focus here on two important groups for ecology and biogeochemistry, the cyanobacteria and nitrifying Bacteria and Archaea. Our work represents the first picture of microbial diversity across the entire Laurentian Great Lakes and is an essential baseline from which to monitor future ecosystem change.

About the speaker: Dr. Coleman is an Assistant Professor in the Department of the Geophysical Sciences at University of Chicago. She is a microbial ecologist who studies the causes and consequences of microbial diversity in aquatic systems. Currently her lab is busy characterizing microbial communities, genomic diversity, and biogeochemistry across the Laurentian Great Lakes. She is also cultivating new microbial lineages and developing genetic tools to study their biology. She holds an undergraduate degree in biology from Dartmouth College and a Ph.D. in Civil and Environmental Engineering from MIT. She was a postdoc at MIT & Caltech before joining Uniersity of Chicago in 2012.
**Registration is not required, however please note important visitor information**
Important Visitor Information
All in-person seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Seminar attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, advance notification of at least 48 hours is needed so that security guidelines are followed. You will need to present your passport (a copy will NOT work). For questions regarding building access, or assistance in obtaining Foreign National clearance, please call 734-741-2394. Email contact: Scott.Purdy@noaa.gov
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

10/8/19: Joannes Westerink
2019-10-08 10:30 - 11:30 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
Please join us for a Great Lakes Seminar Series presentation:
Time: 10:30-11:30 am EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall
Presenter: Joannes Westerink, University of Notre Dame
Title: Towards Heterogeneous Process, Scale, and Model Coupling in Simulating the Hydrodynamics of the Coastal Ocean
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About the presentation: Hurricane wind wave, storm surge, and current environments in the coastal ocean and adjacent coastal floodplain are characterized by their high energy and by their spatial variability. These processes impact offshore energy assets, navigation, ports and harbors, deltas, wetlands, and coastal communities. The potential for an enormous catastrophic impact in terms of loss of life and economic losses is substantial.
Computational models for wind waves and storm driven currents and surge must provide a high level of grid resolution, fully couple the wind wave and long wave processes, and perform quickly for risk assessment, flood mitigation system design, and forecasting purposes. In order to accomplish this, high performance scalable codes are essential. To this end, we have developed an MPI based domain decomposed unstructured grid framework that minimizes global communications, efficiently handles localized sub-domain to sub-domain communication, applies a local inter-model paradigm with all model to model communications being kept on identical cores for sub-domains, and carefully manages output by assigning specialized cores for this purpose. Continuous Galerkin (CG) and Discontinuous Galerkin (DG) implementations are examined. Performance of explicit and implicit implementations of the wave-current coupled system on up to 32,000 cores for various platforms is evaluated.
The system has been extensively validated with an ever increasing amount of wave, water level and current data that has being collected for recent storms including Hurricanes Katrina (2005), Rita (2005), Gustav (2008), Ike (2008), and Sandy (2012). The modeling system helps understand the physics of hurricane storm surges including processes such as geostrophically driven forerunner, shelf waves that propagate far away from the storm, wind wave – surge interaction, surge capture and propagation by protruding deltaic river systems, the influence of storm size and forward speed, and frictionally controlled inland penetration.
These models are being applied by the US Army Corps of Engineers (USACE) in the development of the recently completed hurricane risk reduction system in Southern Louisiana as well as for the development of FEMA Digital Flood Insurance Rate Maps (DFIRMS) for Texas, Louisiana, Mississippi, and other Gulf and Atlantic coast states. NOAA applies the models in extra-tropical and tropical storm surge forecasting.
Current development is focused on incorporating a wider range of physics affecting coastal and inland water levels as well as forces on infrastructure including large scale baroclinically driven processes, rainfall runoff in upland areas and on the coastal floodplain, and wave run-up. This is accomplished with an interleafing framework in which heterogeneous models focused on a select range of processes are coupled over the same domain and/or specific targeted equations that are dynamically assigned to changing portions of the domain as appropriate to the prevailing flow conditions. This is all done in a dynamically load balanced framework. Algorithmic development is focused on DG solvers, ideally suited for the associated strongly advective flows, allow super-parametric elements for p=1 and p=2 and iso-parametric elements for p=3 in order to achieve improved convergence rates and overall runtime efficiency, and allow for the selection of localized physics on the elemental level.

About the speaker: Joannes Westerink is the Joseph and Nona Ahearn Professor of Computational Science and Engineering and the Henry J. Massman Chair of the Department of Civil and Environmental Engineering and Earth Sciences at the University of Notre Dame. He obtained his B.S. (1979) and M.S. (1981) degrees in Civil Engineering at the State University of New York at Buffalo and Ph.D. (1984) degree in Civil Engineering from the Massachusetts Institute of Technology.
Westerink develops high resolution heterogeneous unstructured mesh, multi-physics, multi-scale hydrodynamic codes and models for the hydrodynamics of the coastal ocean and has successfully transitioned these to practitioners for a wide range of applications including the analysis and design of major flood control projects and coastal ocean water level forecasting systems. Westerink has pioneered the successful use of global to channel scale highly heterogeneous unstructured mesh coastal ocean models with mesh resolution varying by up to four orders of magnitude. This encompasses the optimization of algorithms; development of high performance codes in vector and parallel computing environments; the linkages of circulation models to weather and short wind wave models; model verification, validation, and uncertainty quantification; and the application of codes to oceans, continental shelf regions, estuaries, rivers, and coastal flood plains. Westerink is the co-developer, with Rick Luettich of the University of North Carolina at Chapel Hill and Clint Dawson of the University of Texas at Austin, of the widely used ADCIRC finite element based shallow water equation code. ADCIRC has evolved into a community based coastal hydrodynamics code with wide ranging applications within academia, government, and the private sector worldwide. The U.S. Army Corps of Engineers, the Federal Emergency Management Agency and the National Oceanic and Atmospheric Administration all use ADCIRC in support of coastal water level and flooding analyses and forecasts.
Westerink was a team co-lead in the U.S. Army’s Interagency Performance Evaluation Taskforce (IPET) investigation of the Hurricane Katrina (2005) flooding failures in Louisiana. He led ADCIRC storm surge model development for the USACE’s New Orleans and vicinity Hurricane and Storm Damage Risk Reduction System. He also led the ADCIRC model development for the FEMA Flood Insurance Studies in coastal Louisiana and Texas. He served as a commissioner on the Southeast Louisiana Flood Protection Authority and has served as an advisor for the UNESCO Joint WMO-IOC Technical Commission for Oceanography and Marine Meteorology on Enhancing Forecasting Capabilities for North Indian Ocean Storm Surges. He currently serves as an International Advisory Board Member of CIGIDEN, Chile’s National Research Center for Integrated Natural Disaster Management.
Westerink’s current research includes: the development of high order h-p adaptive Discontinuous Galerkin based coastal circulation codes; incorporating phase resolving wave processes including run-up directly into circulation codes; understanding resonant basin and shelf modes and shelf dissipation processes; incorporating local rainfall and small scale channel routing capabilities into shallow water based codes; sea ice interaction with wind waves and circulation; and downscaling global ocean models into global high resolution coastal models to account for baroclinicity and sea level fluctuations. Current applications regions include developing the next generation of ESTOFS water level forecast models for NOAA focusing on Puerto Rico and the U.S. Virgin Islands; the U.S. East and Gulf coasts, and Alaska.
**Registration is not required, however please note important visitor information**
Important Visitor Information
All in-person seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Seminar attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, advance notification of at least 48 hours is needed so that security guidelines are followed. You will need to present your passport (a copy will NOT work). For questions regarding building access, or assistance in obtaining Foreign National clearance, please call 734-741-2394. Email contact: Scott.Purdy@noaa.gov
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

9/20/19: Jay Austin
2019-09-20 13:30 - 14:30 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
Please join us for a Great Lakes Seminar Series presentation:
Time: 1:30-2:30 pm EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall
Presenter: Jay Austin, University of Minnesota – Duluth
Title: What does it really mean for a lake to “turn over”? Radiatively driven convection in a deep lake.
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Abstract: Due to the existence of the temperature of maximum density for freshwater (3.98C), springtime heating of a freshwater lake from incident sunlight can result in a process called radiatively-driven convection, where heating at the surface of the lake makes surface waters denser, resulting in full water-column convection. In a deep lake like Lake Superior, this process can dominate the circulation of the lake for two to three months every year, and controls the vertical redistribution of physical, biological, and geochemical properties in the lake during this period. Characteristic features of the convection cells produced are discerned from a set of observations made in Lake Superior over the last several years, from autonomous underwater gliders, turbulence profilers, and moorings, including a large, two-point mooring that consisted of a two-dimensional array of thermistors 180m on a side. Glider data suggests that warm water produced near the surface convect into the lake in chimney-like structures with lateral scales on the order of 10m, and the cells themselves have lateral scales on the order of 100m. Observed vertical velocities on the order of 1cm/s. Temperature anomalies on the order of 0.1K build up during the day, and the water column tends to fully homogenize each night. Developing a better understanding of the dynamics of this convective process is essential to our understanding of the annual development of deep, dimictic lakes.

Bio: Dr. Austin is a Professor at the Large Lakes Observatory and in the Department of Physics and Astronomy at the University of Minnesota, Duluth. He is a Physical Limnologist with broad interests, studying a wide range of phenomenology on large lakes around the world. His interests include, but are not limited to, thermal structure, the role of ice, climate change impacts, acoustics, and convective processes. He is primarily an observationalist, utilizing moorings, autonomous gliders and autonomous profilers as well as historical data to study lake processes. He also utilizes numerical modeling techniques, largely to study the sensitivity of lake systems to climate change. He is also interested in pedagogy and outreach. Dr. Austin’s undergraduate degrees in Physics and Math are from Cal Poly, San Luis Obispo, and his PhD (1999) is from the MIT/Woods Hole Oceanographic Institution Joint Program in Physical Oceanography. He has been at UMD since 2005.
**Registration is not required, however please note important visitor information**
Important Visitor Information
All in-person seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Seminar attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, advance notification of at least 48 hours is needed so that security guidelines are followed. You will need to present your passport (a copy will NOT work). For questions regarding building access, or assistance in obtaining Foreign National clearance, please call 734-741-2394. Email contact: Scott.Purdy@noaa.gov
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.

7/22/19: Craig Williamson
2019-07-22 13:30 - 14:30 | NOAA Great Lakes Environmental Research Laboratory, 4840 S State Rd, Ann Arbor, MI, 48104, United States
Please join us for a Great Lakes Seminar Series presentation:
Time: 1:30-2:30 pm EDT
Location: NOAA Great Lakes Environmental Research Laboratory, Lake Superior Hall
Presenter: Craig Williamson, Miami University
Title: “Implications of Changes in Water Clarity for Lake Ecosystem Structure and Function: Beyond the Holy Grail”
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Webinar Recording
Abstract: The holy grail of lake management can be found in the strong relationship between nutrient loading and chlorophyll concentrations. Increases in nutrients can lead to harmful algal blooms, cyanotoxins, and dead zones. These events plague western Lake Erie, coastal oceans, and many other inland waters. Yet a recent survey of 2,913 lakes in the USA shows that overall little has changed with either nutrients or chlorophyll in recent decades. In the meantime, lakes in many parts of the world are turning browner due to up to a doubling of terrestrially derived dissolved organic matter. Hot spots of this lake “browning” include northern Europe and northeastern North America. Lake browning is both a good news story involving recovery from anthropogenic acid deposition in response to the Clean Air Act Amendments of 1990, and a bad news story related to climate change and increases in precipitation and extreme storm events. Other lakes such as Lake Michigan and Lake Huron are increasing in water clarity. What are the implications of these changes in water clarity for ecosystem structure and function? Reductions in water transparency can increase surface water temperatures, lead to stronger thermal stratification, contribute to oxygen depletion, and facilitate increases in invasive species. Anoxia can in turn stimulate regeneration of phosphorus from the sediments, and combined with warmer surface water temperatures, increase the potential for harmful algal blooms that further decrease water transparency. Both increases and decreases in water clarity also have important implications for the success of invasive and native fish species, fisheries management, as well as solar UV disinfection of parasites and pathogens in lakes. Understanding the causes and consequences of change in water transparency is essential to effective management of lakes and the important ecosystem services that they provide.

Bio: Craig Williamson is the Ohio Eminent Scholar of Ecosystem Ecology at Miami University in Ohio where he leads the Global Change Limnology Laboratory. His expertise is in the ecology of UV radiation and climate change, with a current focus on the effects of water clarity on lake ecosystems. His research is based at the Lacawac Sanctuary and Biological Field Station in the northeastern Pennsylvania, but extends worldwide. Research questions range from UV effects on the ecology of zooplankton, larval fish, and infectious diseases, to deploying advanced sensors to decipher the sentinel responses of lakes to climate change. He serves on the United Nations Environment Programme Environmental Effects Assessment Panel (UNEP EEAP), is active in the Global Lake Ecological Observatory Network (GLEON) where he leads the Climate Sentinels Working Group, and is the Chief Scientific Adviser of the Pocono Lake Ecological Observatory Network (PLEON), an outreach program on public education and monitoring of lakes in northeastern Pennsylvania.
**Registration is not required, however please note important visitor information**
Important Visitor Information
All in-person seminar attendees are required to receive a visitor badge from the front desk at the NOAA Great Lakes Environmental Research Laboratory facility. Seminar attendees need to present a valid U.S. photo ID or green card. If you are a Foreign National, advance notification of at least 48 hours is needed so that security guidelines are followed. You will need to present your passport (a copy will NOT work). For questions regarding building access, or assistance in obtaining Foreign National clearance, please call 734-741-2394. Email contact: Scott.Purdy@noaa.gov
_____________________________________________________
Questions? Contact Mary Ogdahl: ogdahlm@umich.edu
Visit ciglr.seas.umich.edu for more information.
