Presentations

2025 National/International Presentations

Friedrichs, M.A.M. (2025) Chesapeake Bay Environmental Forecast System: Accelerating the transition of environmental forecasts from research to operations. Invited presentation at NOAA Ecological Forecasting Webinar Series, virtual, Jul.

Hawes, C., M. Fabrizio, M. Friedrichs, P. St-Laurent, V. Nepal, A. Bever, G. Bhatt and L. Linker. (2025) Forecasting the effects of climate change on juvenile Atlantic Croaker in the Chesapeake Bay. Atlantic Croaker Stock Assessment Workshop, 8 Jul.

Bever, A., Susanna Musick, and M.A.M. Friedrichs (2025) CBEFS Real-time forecast model additions. Chesapeake Bay Recreational Angler Focus Group Meeting, June.

Friedrichs, M.A.M. (2025) An overview of the Chesapeake Bay Environmental Forecast System. Invited presentation at the NOAA Ecological Forecasting Meeting, May.

Horemans, D., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2025) Forecasting harmful algal bloom species in the Chesapeake Bay using machine learning. Invited online presentation at the NOAA Ecological Forecasting Meeting, Gloucester Point, VA, 17 Apr.

Friedrichs, M.A.M., and V. Nepal (2025) Forecasting the effects of climate change on Chesapeake Bay fisheries using physiologically informed habitat models. Chesapeake Bay Program’s Sustainable Fisheries Goal Implementation Team Meeting, 25-26 Mar.

Horemans, D., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2025) The importance of mixotrophy for estuarine primary production in the Chesapeake Bay. Oral presentation at the ASLO Aquatic Sciences Meeting, Charlotte, NC, 26-31 Mar.

Horemans, D., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2025) Forecasting multiple harmful algal bloom species in the lower part of the Chesapeake Bay, VA HAB Taskforce Meeting, Norfolk, VA, 28 Feb.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2025) Latest forecasting modeling efforts, including a new forecasting tool for multiple HAB species. MD HAB Task Force Annual Meeting, Annapolis, MD, Jan.

2024 National/International Presentations

Friedrichs, M.A.M. (2024) Battling Hypoxia in Chesapeake Bay: The Tentative Success of Environmental Protection in the Face of Increasing Population and Climate Change. Rachel Carson Award Lecture, 2024 AGU Meeting, Washington DC, 9-13 Dec.

Labossiere, A., M.A.M. Friedrichs, P. St-Laurent, R.G. Najjar (2024) Impact of tropical storms on the carbonate system of a coastal plain estuary. Oral presentation at 2024 AGU Meeting, Washington DC, 9-13 Dec.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2024) Forecasting harmful algal blooms in the Chesapeake Bay using empirical habitat models. Oral presentation at 2024 AGU Meeting, Washington DC, 9-13 Dec.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2024). Evaluating the prediction skill of correlative estuarine species distribution models trained with mechanistic model output. Oral presentation at OceanPredict Symposium (OP’24), Paris, France, 18-22 Nov.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown. 2024. Unraveling Environmental Factors Controlling Harmful Algal Blooms in the Chesapeake Bay using Generalized Linear Models. US Symposium on Harmful Algae, Portland, ME, 27- 31 Oct.

Friedrichs, M.A.M., A. Bever, P. St-Laurent (2024) Use of new continuous data in the Chesapeake Bay Environmental Forecasting System (CBEFS). Invited talk for the Chesapeake Bay Program’s Hypoxia Collaborative, Oct.

St-Laurent, P., M.A.M. Friedrichs (2024) A "How To" guide to the digital atlas for physical and biogeochemical conditions in the Chesapeake Bay, NOAA Mid-Atlantic Coastal Acidification Network (MACAN) webinar, virtual, 5 Sep.

Bever, A.J., M.A.M. Friedrichs, P. St-Laurent (2024) Coupled Hydrodynamic-Biogeochemical Forecasting using the Chesapeake Bay Environmental Forecasting System (CBEFS). Unifying Innovations in Forecasting Capabilities Workshop, Jackson, MS, 22-26 Jul.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown. 2024. Optimizing the forecasting skill of correlative estuarine species distribution models using mechanistic model output. Unifying Innovations in Forecasting Capabilities Workshop, Jackson, MS, 22-26 Jul.

Szot, O.N., M.A.M. Friedrichs, P. St-Laurent, A.J. Bever, C.K. Harris. Relative importance of factors driving hypoxia onset in the Chesapeake Bay. Poster presentation at Advances in Marine Ecosystem Modelling Research Conference, Plymouth, United Kingdom, 8-11 Jul.

Labossiere, A., M.A.M. Friedrichs, P. St-Laurent, R.G. Najjar (2024) Impacts of tropical storms on the alkalinity of two contrasting tidal tributaries in a coastal plain estuary. Oral presentation at Advances in Marine Ecosystem Modelling Research Conference, Plymouth, United Kingdom, 8-11 Jul.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2024) Evaluating the skill of hybrid statistical species distribution models trained with mechanistic model output. Oral presentation at Advances in Marine Ecosystem Modelling Research Conference, Plymouth, United Kingdom, 8-11 Jul.

Hawes, C., M.A.M. Friedrichs, P. St-Laurent, K. Hinson, R.G. Najjar (2024) Modeling mid-21st century Chesapeake Bay hypoxia: the role of climate changes at the ocean, land, and atmospheric boundaries. Poster presentation at Advances in Marine Ecosystem Modelling Research Conference, Plymouth, United Kingdom, 8-11 Jul.

St-Laurent, P., M.A.M. Friedrichs (2024) An atlas for physical/biogeochemical conditions in the Chesapeake Bay. Oral presentation at Chesapeake Community Research Symposium, Annapolis, MD, 10-12 Jun.

Hawes, C., M.A.M. Friedrichs, P. St-Laurent, K. Hinson, R.G. Najjar (2024) Projected impacts of climate-induced changes in the ocean, land, and atmosphere on mid-21st century Chesapeake Bay hypoxia. Oral presentation at Chesapeake Community Research Symposium, Annapolis, MD, 10-12 Jun.

Labossiere, A., M.A.M. Friedrichs, P. St-Laurent, R.G. Najjar (2024) Impacts of tropical storms on the carbonate chemistry of two contrasting tidal tributaries in the Chesapeake Bay. Oral presentation at Chesapeake Community Research Symposium, Annapolis, MD, 10-12 Jun.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2024) Unraveling environmental factors controlling harmful algal blooms in the Chesapeake Bay using generalized linear models. Oral presentation at Chesapeake Community Research Symposium, Annapolis, MD, 10-12 Jun.

Szot, O.N., M.A.M. Friedrichs, P. St-Laurent, A.J. Bever, C.K. Harris (2024) Mechanisms impacting variability of hypoxia onset in the Chesapeake Bay. Oral presentation at Chesapeake Community Research Symposium, Annapolis, MD, 10-12 Jun.

Friedrichs, M.A.M. (2024) Powering the economy, health, and tourism in the Chesapeake Bay. MARACOOS 20^thAnniversary briefing to the U.S. House of Representatives, Washington, DC, May.

Friedrichs, M.A.M. and K.E. Hinson (2024) Chesapeake Hypoxia Analysis & Modeling Program (CHAMP): Predicting impacts of climate change on the success of management actions in reducing Chesapeake Bay hypoxia. Chesapeake Bay Program Climate Change 3.0 Workshop, Annapolis, MD, 7-9 May.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2024) Real-time forecasts of Chesapeake Bay harmful algal blooms using empirical habitat suitability models. OceanPredict – Marine Ecosystem Analysis and Prediction (MEAP-TT) seminar, virtual, 3 Apr.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2024) Real-time forecasts of Chesapeake Bay harmful algal blooms using empirical habitat suitability models. Center for Coastal Physical Oceanography (CCPO) and Institute for Coastal Adaptation & Resilience (ICAR), virtual, 5 Feb.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2024) Real-time Forecasts of Harmful Algal Blooms Using Empirical Habitat Suitability Models. VA HAB Task Force Annual Meeting, Gloucester Point, VA, 26 Feb.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2024) Predicting coastal harmful algal blooms with correlative species distribution models trained with mechanistic model output. Oral presentation at Ocean Sciences Meeting, New Orleans, LA, 18-23 Feb.

Friedrichs, M.A.M., F. Da, P. St-Laurent, R. Najjar, E.H. Shadwick (2024) Controls on the carbonate system of a coastal plain estuary: Rivers, tidal wetlands, and tidal cycles. Poster presentation at Ocean Sciences Meeting, New Orleans, LA, 18-23 Feb.

Labossiere, A., M.A.M. Friedrichs, P. St-Laurent, R. Najjar (2024) Impact of tropical storms on the carbonate chemistry of two contrasting tidal tributaries in a coastal plain estuary. Oral presentation at Ocean Sciences Meeting, New Orleans, LA, 18-23 Feb.

Czajka, C., M.A.M. Friedrichs, E.B. Rivest, P. St-Laurent, M.J. Brush, F. Da (2024) Interacting effects of coastal acidification and climate change co-stressors projected to reduce oyster growth in Chesapeake Bay. Oral presentation at Ocean Sciences Meeting, New Orleans, LA, 18-23 Feb.

Hawes, C., M.A.M. Friedrichs, P. St-Laurent, K. Hinson, R. Najjar (2024) Relative roles of atmosphere, ocean, and land in modeled climate-induced changes to mid-21st century Chesapeake Bay hypoxia. Oral presentation at Ocean Sciences Meeting, New Orleans, LA, 18-23 Feb.

Szot, O., M.A.M. Friedrichs, P. St-Laurent, A.J. Bever, C.K. Harris (2024) Drivers of hypoxia onset in Chesapeake Bay. Oral presentation at Ocean Sciences Meeting, New Orleans, LA, 18-23 Feb.

2023 National/International Presentations

Horemans, D. M. L., J. C. Lin, M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2023) Unraveling environmental factors controlling harmful algal blooms using statistical models. Invited oral presentation at 2023 AGU Meeting, San Francisco, CA, 11- 15 Dec.

Friedrichs, M.A.M., D.M.L. Horemans, P. St-Laurent, R.R. Hood, C.W. Brown, J. C. Lin (2023) Real-time forecasts of harmful algal blooms using empirical habitat suitability models. Oral presentation at 2023 AGU Meeting, San Francisco, CA, 11- 15 Dec.

Friedrichs, M.A.M. (2023) Environmental Forecasting at VIMS. Invited presentation to Secretary Voyles (Virginia Secretary of Natural and Historic Resources) and Staff, Gloucester Point, VA, Dec.

Friedrichs, M.A.M. (2023) Chesapeake Bay Environmental Forecasting System, Chesapeake Bay Blue Crab Stock Assessment Data Workshop, Solomons, MD, Dec.

Czajka, C., M.A.M. Friedrichs, E.B. Rivest, P. St-Laurent, M. Brush, F. Da (2023) Acidification and other climate change stressors projected to impact oyster growth in Chesapeake Bay. Oral presentation at 2023 CERF Conference, Portland, OR, 12-16 Nov.

Da, F., M.A.M. Friedrichs, P. St-Laurent, R. Najjar, E.B. Rivest, E. Shadwick (2023) Calcite saturation state responses to extreme-discharge and climate change: Implications for shellfish aquaculture and restoration. Oral presentation at 2023 CERF Conference, Portland, OR, 12-16 Nov.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C. Brown (2023) Using empirical habitat suitability models with mechanistic model output to forecast estuarine harmful algal blooms. Oral presentation at 2023 CERF Conference, Portland, OR, 12-16 Nov.

Szot, O., M.A.M. Friedrichs, P. St-Laurent, A. Bever (2023) Variability in the timing of hypoxia onset in the Chesapeake Bay. Oral presentation at 2023 CERF Conference, Portland, OR, 12-16 Nov.

Bever, A., M.A.M. Friedrichs, P. St-Laurent (2023) Artificial neural networks for riverine biogeochemistry in a real-time environmental forecast system of Chesapeake Bay. Oral presentation at 2023 CERF Conference, Portland, OR, 12-16 Nov.

Friedrichs, M.A.M., K.E. Hinson, P. St-Laurent, R.G. Najjar, M. Herrmann, H. Tian, Z. Bian, G. Bhatt (2023) Quantifying uncertainties in climate projections of Chesapeake Bay hypoxia. Oral presentation at 2023 CERF Conference, Portland, OR, 12-16 Nov.

Hawes, C., M.A.M. Friedrichs, P. St-Laurent, K.E. Hinson, R.G. Najjar, M. Herrmann (2023) Relative roles of atmosphere, ocean, and land on future climate-induced changes in Chesapeake Bay Hypoxia. Oral presentation at 2023 CERF Conference, Portland, OR, 12-16 Nov.

St-Laurent, P., C.T. Friedrichs, M.A.M. Friedrichs (2023) How does the circulation of the five largest tributaries of the Chesapeake Bay compare? Oral presentation at 2023 CERF Conference, Portland, OR, 12-16 Nov.

Labossiere, A., M.A.M. Friedrichs, P. St-Laurent, R.G. Najjar (2023) Impact of tropical storms on carbonate chemistry in the Chesapeake Bay. Oral presentation at 2023 CERF Conference, Portland, OR, 12-16 Nov.

Friedrichs, M.A.M., C. Czajka, E.B. Rivest, M. Brush, B. Katz (2023) Water quality tools: Applications to support growers and managers. Virginia Aquaculture Conference, Newport News, VA, 10-11 Nov.

Friedrichs, M.A.M., A. Bever., P. St-Laurent (2023) Using the new vertical profiler oxygen data to improve CBEFS (the Chesapeake Bay Environmental Forecast System).  Chesapeake Bay Program Hypoxia Collaborative Meeting, virtual, Oct.

Friedrichs, M.A.M. (2023) Chesapeake Bay Environmental Forecasting System: accelerating the transition of HAB and pathogen models from research to operations. Coastal and Ocean Modeling Testbed Annual Meeting, Oct.

St-Laurent, P., M.A.M. Friedrichs, A. Bever, S. Musick, K. Hudson (2023) The Chesapeake Bay Environmental Forecasting System. MARACOOS annual meeting, Baltimore, MD, 12-13 Sep.

Friedrichs, M.A.M. (2023) The Chesapeake Bay Environmental Forecasting System. Angler and Charter Boat Captain Focus Group, Virtual, Jul.

Friedrichs, M.A.M. (2023) Environmental Forecasting at VIMS, Invited presentation to the Richmond’s Op Six members, Gloucester Point, VA, Jul.

Friedrichs, M.A.M., P. St-Laurent, A. Bever (2023) Application of continuous monitoring oxygen data: Chesapeake Bay Environmental Forecasting System (CBEFS) Chesapeake Bay Program Hypoxia Collaborative Meeting, virtual, Jun.

St-Laurent, P., C.T. Friedrichs, M.A.M. Friedrichs (2023) How does the circulation of the five largest tributaries of the Chesapeake Bay compare? Coastal Ocean Dynamics Gordon Conference, Smithfield, RI, 17-18 Jun.

St-Laurent, P., C.T. Friedrichs, M.A.M. Friedrichs (2023) How does the circulation of the five largest tributaries of the Chesapeake Bay compare? York River and Small Coastal Basins Symposium, Gloucester Point, VA, 17 May.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C. Brown (2023) Forecasting Prorocentrum minimum blooms in the Chesapeake Bay using empirical habitat models. Liège Colloquium on Ocean Dynamics: AI/machine-learning and Data Analysis in Oceanography, Liege, Belgium, 8-12 May 2023.

Czajka, C., M.A.M. Friedrichs, E.B. Rivest, P. St-Laurent, M. Brush (2023) Impacts of future climate change on York River carbonate chemistry and oyster growth. York River and Small Coastal Basins Symposium, Gloucester Point, VA, 17 May.

Labossiere, A., M.A.M. Friedrichs, P. St-Laurent, E.B. Rivest, R.G. Najjar (2023) Quantifying impacts of oyster restoration on alkalinity in the lower York River. York River and Small Coastal Basins Symposium, Gloucester Point, VA, 17 May.

Czajka, C., M.A.M. Friedrichs, E Rivest, M. Brush, P. St-Laurent, S. Blachman, F. Da (2023) Examining climate change impacts on York River carbonate chemistry and oyster growth. MACAN webinar: OA Research Highlights Around the Region: Part 2, virtual, 22 May.

Friedrichs, M.A.M. (2023) Predicting future Chesapeake Bay hypoxia: implications for management. ODU OEAS Seminar Series, Norfolk, VA, Mar.

Friedrichs, M.A.M. (2023) Impacts of coastal acidification and other co-stressors on oyster restoration and aquaculture in the Chesapeake Bay. NOAA Ocean Acidification Working Group, Feb.

Friedrichs, M.A.M. and F. Da. (2023) Forecasting Water Quality in the Chesapeake Bay. VIMS After Hours Presentation, Gloucester Point, VA, 26 Jan.

Friedrichs, M.A.M. (2023) CBEFS Portal Demonstration. Invited talk at NOAA Harmful Algal Bloom Workshop, virtual, 17-18 Jan.

St-Laurent, P., M.A.M. Friedrichs, S.A. Blachman, M.J. Bruch, C.R. Czajka, F. Da, E. Rivest, B. Vogt, D.J. Wrathal (2023) S.T.A.R.: Shellfish Thresholds and Aquaculture Resilience. NOAA Ocean Acidification Program meeting, San Diego, CA, 4-6 Jan.

Czajka, C., M.A.M. Friedrichs, E.B. Rivest, P. St-Laurent, M. Brush (2023) Impacts of future climate change on Chesapeake Bay carbonate chemistry and oyster growth. NOAA Ocean Acidification Program meeting, San Diego, CA, 4-6 Jan.

2022 National/International Presentations

St-Laurent, P. M.A.M. Friedrichs, R.G. Najjar, J. Wilkin (2022) Sensitivity of Chesapeake Bay hypoxia to physical forcings: A regional Earth System Modeling perspective. Poster Presentation at 2022 AGU Meeting, Chicago, IL, 12-16 Dec.

Horemans, D.M.L., M. A. M. Friedrichs, P. St-Laurent, R. R. Hood, and C. W. Brown (2022) Forecasting harmful algal blooms in the Chesapeake Bay using empirical habitat models. Horn Point Laboratory Seminar Series, Cambridge, MD, 16 Nov.

Bever, A. and M.A.M. Friedrichs (2022) Summary of 2022 hypoxia based on the Chesapeake Bay Environmental Forecast System. CBP STAR meeting, Nov.

Horemans, D.M.L., M.A.M. Friedrichs, P. St-Laurent, R.R. Hood, C.W. Brown (2022) Predicting harmful algal blooms in the Chesapeake Bay using empirical habitat models. US Symposium on Harmful Algae, Albany NY, 23-28 Oct.

Friedrichs, M.A.M., and P. St-Laurent (2022) Chesapeake hypoxia analysis & modeling program: Predicting impacts of climate change on the success of management actions in reducing Chesapeake Bay hypoxia. CBP Modeling Workgroup Quarterly Meeting, virtual, Oct.

Czajka, C., M.A.M. Friedrichs, E.B. Rivest, P. St-Laurent, M. Brush (2022) Impacts of future climate change on Chesapeake Bay carbonate chemistry and oyster growth. Fifth International Symposium on the Ocean in a High CO₂World, Lima, Peru, 13-16 Sept.

Turner, J.S., C.T. Friedrichs, M.A.M. Friedrichs (2022) Long-term trends in Chesapeake Bay remote sensing reflectance: implications for water clarity. PACE Applications Workshop, virtual, 14-15 Sept.

Friedrichs, M.A.M., D. Horemans, P. St-Laurent and the COMT-HAB Team (2022) Chesapeake Bay Environmental Forecasting System: Accelerating the transition of HAB and pathogen models from research to operations. Coastal and Ocean Modeling Testbed Annual Meeting, Sept.

Friedrichs, M.A.M., F. Da (2022) Forecasting water quality in the Chesapeake Bay. The Oyster Gardener Association Meeting, Jul.

St-Laurent, P., C.T. Friedrichs, M.A.M. Friedrichs (2022) Variability of the estuarine circulation inside tidal tributaries of the Chesapeake Bay. Chesapeake Community Research Symposium, Annapolis, MD, 6-8 June.

Turner, J.S., C.T. Friedrichs, M.A.M. Friedrichs (2022) Long-term trends in Chesapeake Bay remote sensing reflectance: implications for water clarity. Chesapeake Community Research Symposium, Annapolis, MD, 6-8 June.

Czajka, C., M.A.M. Friedrichs, E. Rivest, P. St-Laurent, Mark Brush (2022) Impacts of future climate change on Chesapeake Bay carbonate chemistry and oyster growth. Chesapeake Community Research Symposium, Annapolis, MD, 6-8 June.

Bever, A., P. St-Laurent, M.A.M. Friedrichs (2022) Effects of the resolution of model inputs on real-time environmental forecasting, Chesapeake Community Research Symposium, Annapolis, MD, 6-8 June.

Hawes, C., M.A.M. Friedrichs, P. St-Laurent, R.G. Najjar, M. Herrmann (2022) The direct effect of warming dominates future increases in Chesapeake Bay hypoxia, Chesapeake Community Research Symposium (ChesCRS), Annapolis, MD, 6-8 June.

Frankel, L.T., M.A.M. Friedrichs, P. St-Laurent, A.J. Bever, R.N. Lipcius, G. Bhatt, G.W. Shenk (2022) Nitrogen reductions have decreased hypoxia in the Chesapeake Bay: Evidence from empirical and numerical modeling, Chesapeake Community Research Symposium (ChesCRS), Annapolis, MD, 6-8 June.

Hinson, K., M.A.M. Friedrichs, R.G. Najjar, M. Herrmann, P. St-Laurent, Z. Bian, G. Bhatt, H. Tian, G. Shenk (2022) Watershed climate scenario uncertainty and implications for Chesapeake Bay hypoxia, Chesapeake Community Research Symposium (ChesCRS), Annapolis, MD, 6-8 June.

Hinson, K., M.A.M. Friedrichs, M. Herrmann, R.G. Najjar, P. St-Laurent (2022) Probabilistic projections of watershed climate impacts on hypoxia in Chesapeake Bay, United States. 53rd International Colloquium on Ocean Dynamics, Liège, Belgium, 15-20 May.

Hawes, C., M.A.M. Friedrichs, P. St-Laurent, R.G. Najjar, M. Herrmann (2022) Impacts of future atmospheric climate change on U.S. Chesapeake Bay hypoxia, 53rd International Colloquium on Ocean Dynamics, Liège, Belgium, 15-20 May.

Friedrichs, M.A.M., A. Bever, P. St-Laurent (2022) Chesapeake Bay Environmental Forecast System: CBEFS. NOAA Regional Ocean Modeling System Annual Meeting, Apr.

Friedrichs, M.A.M. (2022) Ecological forecasting applications for the Chesapeake Bay. Daily to Decadal Ecological Forecasting Workshop, Apr.

Hawes, C., M.A.M. Friedrichs, P. St-Laurent, R.G. Najjar, M. Herrmann (2022) Impacts of atmospheric climate change on Chesapeake Bay hypoxia. Ocean Sciences Meeting, virtual, 24 Feb- 4 Mar.

Friedrichs, M.A.M., L. Frankel, P. St-Laurent, A. Bever, R. Lipcius, G. Bhatt, G. Shenk (2022) Nitrogen reductions have decreased hypoxia in the Chesapeake Bay: Evidence from empirical and numerical modeling. Ocean Sciences Meeting, virtual, 24 Feb- 4 Mar.

St-Laurent, P., C.T. Friedrichs, M.A.M. Friedrichs (2022) Examining the role of mixing in the circulation of the York and Rappahannock estuaries. Ocean Sciences Meeting, virtual, 24 Feb- 4 Mar.

Da, F., M.A.M. Friedrichs, P. St-Laurent, E.H. Shadwick, E.B. Rivest, R.G. Najjar (2022) Processes driving carbonate system variability in the York River Estuary. Ocean Sciences Meeting, virtual, 24 Feb- 4 Mar.

Hinson, K., M.A.M. Friedrichs, M. Herrmann, G. Bhatt, Z. Bian, R.G. Najjar, G. Shenk, P. St-Laurent, Y. Yao, H. Tian (2022) Climate change-driven terrestrial inputs increases likelihood of hypoxia in a eutrophied estuary. Ocean Sciences Meeting, virtual, 24 Feb- 4 Mar.

Da, F. & M.A.M. Friedrichs (2022) An introduction to forecasting water quality in the Bay and how these tools are being applied to determine the vulnerability of oyster aquaculture and restoration to environmental stressors.VIMS/VASG Seminar Series for Oyster Gardeners, virtual, Feb.

Friedrichs, M.A.M. (2022) Extent, seasonality and causes of Chesapeake Bay warming. VIMS Foundation Board Meeting, Gloucester Point, VA, Jan.

2021 National/International Presentations

Friedrichs, M.A.M. (2021) Estuarine Deoxygenation: Chesapeake Bay hypoxia. 97^th Meeting of the Ocean Studies Board, virtual, 9-10 Nov.

Hinson, K.E., Friedrichs, M.A.M., Herrmann, M., Bhatt, G., Bian, Z., Najjar, R.G., Shenk, G., St-Laurent, P., & Tian, H. (2021) Narrowing climate and management scenario uncertainty in future projections of coastal hypoxia. 2021 CERF Conference, virtual, 1-12 Nov.

St-Laurent, P., M.A.M. Friedrichs & C.T. Friedrichs (2021) Contrasting the estuarine circulation of the York and Rappahannock estuaries. 2021 CERF Conference, virtual, 1-12 Nov.

Da, F., M.A.M. Friedrichs, P. St-Laurent, E.H. Shadwick, E.B. Rivest (2021) Physical and biogeochemical controls of diel carbonate system variability in a coastal plain estuary. 2021 CERF Conference, virtual, 1-12 Nov.

Frankel, L.T., M.A.M. Friedrichs, P. St-Laurent, A.J. Bever and R.N. Lipcius (2021) Quantifying the increased resiliency of Chesapeake Bay to hypoxia using a combined data/modeling approach. 2021 CERF Conference, virtual, 1-12 Nov.

Bever, A., M.A.M. Friedrichs, P. St-Laurent, D. Malmquist (2021) Forecasting and reporting of daily hypoxia severity in Chesapeake Bay. 2021 CERF Conference, virtual, 1-12 Nov.

Turner, J.S., C.T. Friedrichs & M.A.M. Friedrichs (2021) Long-term trends in Chesapeake Bay water clarity from satellite remote sensing reflectance. 2021 CERF Conference, virtual, 1-12 Nov.

Friedrichs, M.A.M. (2021) Modeling Chesapeake Bay hypoxia. Lake Erie Hypoxia workshop, virtual, 26 Oct.

Friedrichs, M.A.M. A. Bever, P. St-Laurent, F. Da and K. Hudson (2021) Short-term forecasts of acidification metrics in Chesapeake Bay. NOAA’s Ocean and Coastal Community Modeling Workshop, virtual, 19-21 Oct.

Friedrichs, M.A.M. (2021) Vulnerability of the Largest US Estuary to Acidification: Implications of declining pH for shellfish hatcheries in the Chesapeake Bay. NOAA OA Program Regional Vulnerability Assessment Workshop, virtual, 22-24 Sept.

Bever, A. and M.A.M. Friedrichs (2021) Real-time short-term environmental forecasting of the Chesapeake Bay: setup, uses and next steps. MARACOOS Seminar Series, virtual, Jul.

Da, F., Friedrichs, M.A.M., St-Laurent, P., Shadwick, E., & Najjar, R.G. (2021) Mechanisms driving decadal changes in the carbonate system of a coastal plain estuary. Advances in Marine Ecosystem Modelling Research Conference, virtual, 12-15 Jul.

Turner, J.S., P. St-Laurent, M.A.M. Friedrichs and C.T. Friedrichs (2021) Impacts of sediment inputs from shoreline erosion on water clarity: results form a Chesapeake Bay modeling study. Advances in Marine Ecosystem Modelling Research Conference, virtual, 12-15 Jul.

Frankel, L.T., M.A.M. Friedrichs, P. St-Laurent, A. Bever, R. Lipcius (2021) Quantifying the increased resiliency of the Chesapeake Bay to hypoxia as a result of nutrient reductions. Advances in Marine Ecosystem Modelling Research Conference, virtual, 12-15 Jul.

St-Laurent, P. and M.A.M. Friedrichs (2021) Impacts of local and global anthropogenic changes on the inorganic carbon balance of the Chesapeake Bay over the last century. Advances in Marine Ecosystem Modelling Research Conference, virtual, 12-15 Jul.

Hinson, K.E., Friedrichs, M.A.M., St-Laurent, P., Da, F., & Najjar, R.G. (2021) Extent and causes of Chesapeake Bay warming. Advances in Marine Ecosystem Modelling Research Conference, virtual, 12-15 Jul.

Turner, J. M.A.M. Friedrichs, C.T. Friedrichs (2021) Long-term estuarine water clarity from satellite remote sensing reflectance. ASLO Aquatic Sciences Meeting, virtual, 22 – 27 Jun.

Frankel, L., M.A.M. Friedrichs, P. St-Laurent, A. Bever, R. Lipcius (2021) Quantifying the increased resiliency of the Chesapeake Bay to hypoxia during wet years: a benefit of nutrient reductions. ASLO Aquatic Sciences Meeting, virtual, 22 – 27 Jun.

Da, F., M.A.M. Friedrichs, P. St-Laurent, E.H. Shadwick, R.G. Najjar and K. Hinson (2021) Mechanisms driving decadal changes in the carbonate system of a coastal plain estuary. ASLO Aquatic Sciences Meeting, virtual, 22 – 27 Jun.

Hinson, K.E., Friedrichs, M.A.M., Bhatt, G., Bian, Z., Herrmann, M., Najjar, R.G., St-Laurent, P., Tian, H., & Yao, Y. (2021) Quantifying climate uncertainty in hypoxia from terrestrial runoff. ASLO Aquatic Sciences Meeting, virtual, 22 – 27 Jun.

Turner, J.S., C.T. Friedrichs, M.A.M. Friedrichs (2021) Long-term trends in Chesapeake Bay satellite remote sensing reflectance: implications for water clarity. Ocean Carbon & Biogeochemistry Workshop, virtual, 7-24 Jun.

Da, F. M.A.M. Friedrichs, A. Bever, P. St-Laurent, S. Musick and K. Hudson (2021) The Chesapeake Bay Environmental Forecast System. Ocean Carbon & Biogeochemistry Workshop, virtual, 7-24 Jun.

Da, F., M.A.M. Friedrichs, P. St-Laurent, and E. Shadwick (2021) Controls of the diel variability in the York  River carbonate system. York River and Small Coastal Basins Symposium, virtual, 13 May.

St-Laurent, P., M.A.M. Friedrichs, C.T. Friedrichs (2021) Re-examining the estuarine circulation of the York Estuary. York River and Small Coastal Basins Symposium, virtual, 13 May.

Turner, J. S., C. T. Friedrichs, P. St-Laurent and M.A.M. Friedrichs (2021) Effects of shoreline sediment erosion on estuarine water clarity: results form a Chesapeake Bay modeling study. 52nd International Liège Colloquium on Ocean Dynamics, virtual, 17- 21 May 2021.

Friedrichs, M.A.M. Long-term changes in Chesapeake Bay water quality: global vs. regional stressors. Invited oral presentation at 52nd International Liège Colloquium on Ocean Dynamics, virtual, 17- 21 May 2021.

Hinson, K. and M.A.M. Friedrichs (2021) Extent and causes of Chesapeake Bay warming. CBP Modeling Workgroup Quarterly Meeting, virtual, Apr.

Turner, J.S., P. St-Laurent, M.A.M. Friedrichs, C.T. Friedrichs (2021) Effects of reduced shoreline erosion on Chesapeake Bay water clarity. CBP Modeling Workgroup Quarterly Meeting, virtual Apr.

Friedrichs, M.A.M. (2021) Quantifying and communicating model uncertainty: a Chesapeake Bay case study. Southern California Coastal Water Research Project/San Francisco Environmental Institute Webinar Series on Uncertainty in numerical model applications to manage coastal eutrophication, virtual, Apr.

Da, F., M.A.M. Friedrichs, P. St-Laurent, E. Shadwick and R. Najjar (2021) Mechanisms driving decadal changes in the carbonate system of a coastal plain estuary. 7^th Open Science Meeting North American Carbon Program, virtual, 5-26 Mar.

Friedrichs, M.A.M., A. Bever and R. Hood (2021) Shallow Water Management Models for the Chesapeake Bay. CRC’s Round Table Seminar Series, virtual, 17 Mar.

Friedrichs, M.A.M., P. St-Laurent, J. Wilkin and R. Najjar (2021) Hypoxia modeling in the Chesapeake and Delaware Bays. DOE ICOM Site Review, Mar.

Turner, J.S., P. St-Laurent, M.A.M. Friedrichs, C.T. Friedrichs (2021) Effects of reduced shoreline erosion on Chesapeake Bay water clarity. Physics of Estuarine and Coastal Seas, virtual, 17 Feb.

2020 National/International Presentations

Da, F., Friedrichs, M.A.M., St-Laurent, P., Shadwick, E., Najjar, R.G. (2020) "Chesapeake Bay acidification: relative impacts of long-term local and global stressors". Goldschmidt Virtual Conference. Oral presentation, 21-26 June 2020.

Hinson, K.E., Friedrichs, M.A.M., St-Laurent, P., Najjar, R.G., & Da, F. (2020) "Drivers of warming in the Chesapeake Bay: a 35-year retrospective analysis." June 8, 2020 at the Chesapeake Community Research Symposium, Annapolis, MD (Online due to COVID-19).

Frankel, L.T., Friedrichs, M.A.M., St-Laurent P., and Bever, A.J. (2020) "Increased resiliency of Chesapeake Bay to hypoxia during wet years: A benefit of nutrient reductions." June 8, 2020 at the Chesapeake Community Research Symposium, Annapolis, MD (Online due to COVID-19).

Turner, J.S., St-Laurent, P., Friedrichs, M.A.M., & Friedrichs, C.T. (2020) "Water clarity impacts of sediment inputs from shoreline erosion in the Chesapeake Bay: a modeling study." June 8, 2020 at the Chesapeake Community Research Symposium, Annapolis, MD (Online due to COVID-19).

Turner, J.S., St-Laurent, P., Friedrichs, M.A.M., Friedrichs, C.T. (2020) Shoreline erosion impacts on Chesapeake Bay water clarity: an analysis of effects on light attenuation using a coupled hydrodynamic-biogeochemical model. Abstract [MG52A-03]. Oral Presentation at 2020 Ocean Sciences Meeting, San Diego, CA, 16-21 Feb.

Hinson, K.E., Friedrichs, M.A.M., St-Laurent, P., Najjar, R.G. (2020) A thirty-year retrospective analysis of Chesapeake Bay warming, Abstract [CB34A-03] at 2020 Ocean Sciences Meeting, San Diego, CA, 16-21 Feb.

Frankel, L.T., St-Laurent, P., Bever, A.J., Friedrichs, M.A.M. (2020) Quantifying the Impact of Nutrient Reductions on Dissolved Oxygen in the Chesapeake Bay: Has the Bay Become More Resilient?, Abstract [CB34A-05] at 2020 Ocean Sciences Meeting, San Diego, CA, 16-21 Feb.

Da, F., Friedrichs, M.A.M., St-Laurent, P., Shadwick, E., Najjar, R.G. (2020) Primary stressors impacting the long-term variability of the Chesapeake Bay carbonate system. Abstract [CP43B-06] at 2020 Ocean Sciences Meeting, San Diego, CA, 16-21 Feb.

Bever, A., Friedrichs, M.A.M, Da, F., St-Laurent, P., Hudson, K., Morandi, A. (2020) Real-time Forecasts of Acidification and Hypoxia in the Chesapeake Bay: Model Setup and Online Visualization. Abstract [CP11C-07] at 2020 Ocean Sciences Meeting, San Diego, CA, 16-21 Feb.

2019 National/International Presentations

Da, F., Friedrichs, M.A.M., St-Laurent, P., Shadwick, E., Najjar, R.G. (2019) Interdecadal variability of the Chesapeake Bay carbonate system: global vs. local stressors. Coastal and Estuarine Research Federation. Oral presentation at the 2019 CERF Conference, Mobile, AL, 3-7 Nov.

Hinson, K.E., Friedrichs, M.A.M., Bhatt, G., Najjar, R.G., Herrmann, M., Tian, H., Yao, Y. (2019) Sensitivity of projected Chesapeake Bay hypoxia to climate model, downscaling method, and watershed model, Oral presentation at the 2019 CERF Conference, Mobile, AL, 3-7 Nov.

Friedrichs, C.T., Turner, J.S., St-Laurent, P., Friedrichs, M.A.M. (2019) Effects of shoreline erosion on Chesapeake Bay water clarity. Poster Presentation at the 2019 CERF Conference, Mobile, AL, 3-7 Nov.

2018 National/International Presentations

Turner, J.S., St-Laurent, P., Friedrichs, M.A.M., Friedrichs, C.T. (2018) Effects of sediment-enhanced organic matter sinking rates on Chesapeake Bay water clarity. Abstract [OS41C-2032]. Poster Presentation at 2018 AGU Meeting, Washington, DC, 10-14 Dec.

Friedrichs, C.T., Turner, J.S., Friedrichs, M.A.M., Keisman, J., & Murphy, R. (2018) The changing nature of suspended solids in Chesapeake Bay and its relationship to trends in water clarity. Abstract [OS41C-2031]. Poster Presentation at 2018 AGU Meeting, Washington, DC, 10-14 Dec.

Turner, J.S., Massey, G.M., Kellogg, M.L., Friedrichs, C.T. (2018) Effects of oyster aquaculture on water clarity and suspended particle dynamics in Chesapeake Bay, Virginia. Oral Presentation at 2018 Particles in Europe Conference, Lisbon, Portugal, 14-17 Oct.

Da, F., Friedrichs, M.A.M., St-Laurent, P. (2018) Chesapeake Bay hypoxia: relative impacts of nitrogen entering from the land, the atmosphere, and the coastal ocean. Ocean Deoxygenation Conference. Oral Presentation. Kiel, Germany, 3-7 Sep.

Hinson, K.E., Friedrichs, M.A.M., Irby, I. (2018) Future climate change exacerbates hypoxia in Chesapeake Bay due to warming temperatures. Ocean Deoxygenation Conference. Oral Presentation. Kiel, Germany, 3-7 Sep.

Da, F., Friedrichs, M.A.M., St-Laurent, P. (2018) Impacts of direct atmospheric deposition of nitrogen and coastal nitrogen fluxes on Oxygen concentrations in Chesapeake Bay. Chesapeake Modeling Symposium. Oral presentation. Annapolis, MD, 12-14 Jun.

Hinson, K.E., Friedrichs, M.A.M., Irby, I. (2018), Evaluating responses of Chesapeake Bay hypoxia to 21st century temperature scenarios, Abstract [B1-PM8] presented at Chesapeake Research and Modeling Symposium, Annapolis, MD, 12-14 Jun.

Da, F., Friedrichs, M.A.M., St-Laurent, P. (2018) Impacts of direct atmospheric deposition of nitrogen and coastal nitrogen fluxes on Chesapeake Bay hypoxia. Ocean Sciences Meeting. Poster presentation, 2018, Portland, OR, 12-16 Feb.

Turner, J.S., Massey, G.M., Kellogg, M.L., Friedrichs, C.T. (2018) Water clarity and suspended particle dynamics at oyster aquaculture sites in southwestern Chesapeake Bay. Abstract [MG44B-0356]. Poster presentation at 2018 Ocean Sciences Meeting, Portland, OR, 12-16 Feb.

Hinson, K.E., Irby, I., Da, F., Friedrichs, M.A.M. (2018), Impacts of Future Rising Temperatures on Chesapeake Bay Hypoxia, Abstract [OC44A-0503]. Poster presentation at 2018 Ocean Sciences Meeting, Portland, OR, 12-16 Feb.

Irby, I., M.A.M. Friedrichs (2018), Evaluating confidence in the impact of regulatory nutrient reduction on Chesapeake Bay water quality, Abstract [ED12A-04]. Oral presentation at 2018 Ocean Sciences Meeting, Portland, OR, 12-16 Feb.

Friedrichs, M.A.M., P. St-Laurent, D.E. Kaufman, F. Da, E.H. Shadwick, R. Najjar, Y. Yao, H. Tian (2018), Changes in Chesapeake Bay Carbon Cycling over the Past Century, Abstract [BN51A-08]. Oral presentation at 2018 Ocean Sciences Meeting, Portland, OR, 12-16 Feb.

2017 National/International Presentations

Turner, J.S., Friedrichs, M.A.M., Friedrichs, C.T., Da, F. It’s in the wash(load): Impacts on light attenuation (K_d) and primary production in a hydrodynamic biogeochemical model for Chesapeake Bay. Poster Presentation at 2017 CERF Conference, Providence, RI, 5-9 Nov.

Da, F., Friedrichs, M.A.M., St-Laurent, P. (2017) Impacts of direct atmospheric deposition of nitrogen on Chesapeake Bay hypoxia. Coastal and Estuarine Research Federation. Oral presentation, 2017, Providence, RI, 5-9 Nov.

Hinson, K.E., Friedrichs, M.A.M., Linker, L., Shenk, G., Bhatt, G. (2017), Spatial and Seasonal Variability of Chesapeake Bay Watershed Loads under 2025 Conditions, Abstract [111-29547] presented at 2017 Coastal and Estuarine Research Federation Biennial Meeting, Providence, RI, 5-9 Nov.

Friedrichs, M.A.M., C. Friedrichs, I. Irby, A. Bever, R. Hood, H. Wang and M. Scully. Chesapeake Bay Hypoxia Coastal Ocean Modeling Testbed. All-hands NOAA COMT summer meeting, Washington D.C. July 2017.

Friedrichs, M.A.M., I. Irby, L. Linker, G. Shenk, R. Najjar, H. Tian, E. Hofmann. Impacts of climate change on the efficacy of alternative management actions: Using multiple models in support of hypoxia management decision-making in the Chesapeake Bay. Advances in Marine Ecosystem Modelling Research, Plymouth, UK. June 2017.

Kaufman, D.E., M.A.M. Friedrichs, W.O. Smith, E.E. Hofmann, M.S. Dinniman, J.C.P. Hemmings. Changing Ross Sea biogeochemistry assessed by a data assimilative model and bio-optical glider observations. Advances in Marine Ecosystem Modelling Research, Plymouth, UK. June 2017.

Friedrichs, M.A.M., D.E. Kaufman, R. Najjar, H. Tian, Y Yao, B. Zhang. Impacts of changing nutrient loads on Chesapeake Bay hypoxia and nitrogen cycling over the past century. Advances in Marine Ecosystem Modelling Research, Plymouth, UK. June 2017.

Irby, I., M.A.M. Friedrichs. Evaluating confidence in the impact of regulatory nutrient reduction using water quality models. Advances in Marine Ecosystem Modelling Research, Plymouth, UK. June 2017.

Friedrichs, M.A.M., E. Shadwick, R. Najjar, P. St-Laurent, F. Da, H. Tian. Air-sea CO₂ variability in the Chesapeake Bay. Ocean Carbon and Biogeochemistry Summer Workshop, Woods Hole, MA. June 2017.

Moriarty, J.M., M.A.M. Friedrichs, C. K. Harris. The Role of particulate resuspension on organic matter, nutrient, and oxygen dynamics in Chesapeake Bay: preliminary results from a coupled hydrodynamic-sediment transport-biogeochemical model. Ocean Carbon and Biogeochemistry Summer Workshop, Woods Hole, MA. June 2017. 

Kaufman, D.E., M.A.M Friedrichs, W.O. Smith, E.E. Hofmann, M.S. Dinniman, J.C.P. Hemmings. Combining bio-optical glider observations and biogeochemical modeling to assess Ross Sea phytoplankton changes in the 21^st century. Ocean Carbon and Biogeochemistry Summer Workshop, Woods Hole, MA. June 2017.

Da, F., M.A.M. Friedrichs, P. St-Laurent. Impacts of direct atmophseric deposition of nitrogen on Chesapeaek Bay oxygen and nitrogen cycling. Coastal Ocean Dynamics Gordon Research Conference, Biddeford, ME. June 2017. 

Moriarty, J.M., M.A.M. Friedrichs, C. K. Harris. The Roles of resuspension and advection of sediment and particulate organic matter on Oxygen Dynamics in Chesapeake Bay: Preliminary Results from a coupled hydrodynamic-sediment transport-biogeochemical model. Coastal Ocean Dynamics Gordon Research Conference, Biddeford, ME. June 2017.

Moriarty, J.M., C.K. Harris, M.A.M. Friedrichs, K. Fennel. Coupling sediment transport and biogeochemical processes: the role of resuspension on oxygen and nutrient dynamics. Community Surface Dynamics Modeling System Annual Meeting, Boulder, CO. May 2017.

Kaufman, D.E., M.A.M. Friedrichs, W.O. Smith, E.E. Hofmann, M.S. Dinniman, J.C.P. Hemmings. Changing Ross Sea biogeochemistry assessed by a data assimilative model and bio-optical glider observations. Southeastern Postdoc symposium, Gloucester Point, VA. May 2017.

Signorini, S.R., A. Mannino, M.A.M. Friedrichs, P. St-Laurent, J. Wilkin. Chesapeake Bay Export of Dissolved Organic Carbon from Space-borne Data. International Ocean Colour Science Meeting, Lisbon, Portugal. May 2017.

Rabouille, C., B. Lansard, J. Rassmann, L. Pozzato, M. Taillefert, E. Eytel, A. Abchiche, J.M. Moriarty, and C.K. Harris. Sediment carbon and oxygen cycling and its temporal variations at the continent-water interface. European Geosciences Union (EGU) General Assembly, Vienna, Austria. April 2017.

Friedrichs, M.A.M., A. Bever, C. Friedrichs, R. Hood and D. Wilson. Hypoxia forecasts as a tool for Chesapeake Bay fisheries. Testbed Proving Ground Workshop, Kansas City, MO. April 2017.

Friedrichs, M.A.M., P. St-Laurent, D.E. Kaufman, F. Da, E. Shadwick, R.G. Najjar, M.Herrmann, H. Tian, Y. Yao, and B. Zhang. Fluxes of carbon and nutrients from upstream landscapes to the coastal ocean. North American Carbon Program All Investigators Meeting, Bethesda, MD. March 2017.

Irby, I.D. Hypoxia in the Chesapeake Bay - Yesterday, Today, and Tomorrow. Rappahannock Institute for Lifelong Learning, Rappahannock Community College, Rappahannock, VA. March 2017.

Kaufman, D.E. Optimizing an Ocean Ecosystem Model. William and Mary Business Analytics - Artificial Intelligence course, Williamsburg, VA. March 2017.

Bernhardt, P.W., M.R. Mulholland, B. Widner, C. Sookhdeo, P. Sedwick, P. St-Laurent, M.A.M. Friedrichs, R. Najjar. The Effect of atmospheric nitrogen deposition on parimary productivity and nitrogen uptake along oligotrophic waters of the eastern United States. Honolulu, HI. February 2017.

Friedrichs, M.A.M., R. Hood, C. Friedrichs, D. Forrest and A. Bever. Hypoxia Forecasts as a Tool for Chesapeake Bay Fisheries. ASLO Aquatic Sciences Meeting, Honolulu, HI. February 2017.

Kaufman, D.E. Ross Sea Phytoplankton in the 21st Century. CCPO and ODU Resilience Collaborative Seminar Series, Norfolk, VA. February 2017.

Friedrichs, M.A.M. CHAMP: Chesapeake Hypoxia Analysis and Modeling Project. CBP Modeling Workgroup Meeting, Annapolis, MD. February 2017.

2016 National/International Presentations

Irby, I. and M.A.M. Friedrichs. Evaluating confidence in the impact of regulatory nutrient reduction on Chesapeake Bay water quality. CBP Modeling Workgroup Meeting, Annapolis, MD. December 2016.

Harris, C.K., I. Overeem, E. Hutton, J.M. Moriarty, and P. Wiberg. Introducing Students to Ocean Modeling via a Web-Based Implementation for the Regional Ocean Modeling System (ROMS) River Plume Case Study. American Geophysical Union (AGU) Fall Meeting, San Francisco, CA. 12-16 December 2016.

Moriarty, J.M., C.K. Harris, M.A.M. Friedrichs, K. Fennel, and K. Xu. The Effect of Resuspension and Deposition on Biogeochemical Cycles in the Northern Gulf of Mexico: Numerical Modeling Results. American Geophysical Union (AGU) Fall Meeting, San Francisco, CA. 12-16 December 2016.

Irby, I.D. Science in Politics and Diplomacy. William & Mary Graduate Student Journal Club, Williamsburg, VA. November 2016. 

Santos, B., D. Kaplan, M.A.M. Friedrichs, J.P. Manning, S.G. Barco. Identifying locations of and mechanisms for sea turtle mortality from stranding data using ocean drift models. William & Mary Graduate Research Symposium, Williamsburg, VA. November 2016.

Kaufman, D.E, M.A.M. Friedrichs, W.O. Smith, E.E. Hofmann, M. Dinniman, J.C.P. Hemmings. Climate change impacts on Ross Sea biogeochemistry as assessed by 1D modeling experiments. IMBER ClimEco5 Summer School, Natal, Brazil. August 2016.

Da, F., M.A.M. Friedrichs and P. St-Laurent. Impacts of changes in direct atmospheric deposition of nitrogen on Chesapeake Bay hypoxia. Chesapeake Modeling Symposium, Williamsburg, VA. June 2016

Irby, I.D., M.A.M. Friedrichs, COMT: Chesapeake Bay Estuarine Hypoxia Team. The impact of TMDL nutrient reductions on dissolved oxygen in the Chesapeake Bay; a comparison of academic and regulatory water quality models (pdf). Chesapeake Modeling Symposium, Williamsburg, VA. June 2016.

Friedrichs, M.A.M., D.E. Kaufman, R. Najjar, H. Tian, Y. Yao, B. Zhang. Impacts of changing nutrient loads on Chesapeake Bay hypoxia and nitrogen cycling over the past century. Chesapeake Modeling Symposium, Williamsburg, VA. June 2016.

Friedrichs, M.A.M., A. Bever, R. Hood and the CBP-SWM team. Comparison of shallow-water models for use in supporting Chesapeake Bay management decision-making. Chesapeake Modeling Symposium, Williamsburg, VA. June 2016.

Friedrichs, C., M.A.M. Friedrichs, D. Forrest, and R. Hood. US-IOOS/COMT estuarine hypoxia nowcast/forecast product: stakeholder identification and feedback. Chesapeake Modeling Symposium, Williamsburg, VA. June 2016.

Moriarty, J., C.K. Harris, M.A.M. Friedrichs. The roles of resuspension and redistribution in coastal environments: results from a coupled hydrodynamic-sediment transport-biogeochemical numerical model. Chesapeake Modeling Symposium, Williamsburg, VA. June 2016.

Shadwick, E., M.A.M. Friedrichs, R. Najjar, M. Herrmann, S. Goldberger. Multiple stressors in the estuarine environment: drivers of changes in the Chesapeake Bay CO2 system. Chesapeake Modeling Symposium, Williamsburg, VA. June 2016.

Moriarty, J.M., C.K. Harris, and M.A.M. Friedrichs. The Roles of Resuspension and Redistribution on Nutrient Cycling in the Northern Gulf of Mexico: Results from a Coupled Hydrodynamic-Sediment Transport-biogeochemical Numerical Model. Community Surface Dynamics Modeling Systems Annual Meeting, Boulder, Colorado. 17-19 May 2016.

Friedrichs, M.A.M., D.E. Kaufman, R. Najjar, H. Tian, Y. Yao, B. Zhang. Modeling water quality impacts of changing nutrient loads in the Chesapeake Bay over the past century. The International Society for Ecological Modelling Global Conference, Baltimore, MD. 8-12 May 2016.

Irby, I.D., M.A.M. Friedrichs, COMT: Chesapeake Bay Estuarine Hypoxia Team. Evaluating water quality in the Chesapeake Bay using water quality models from both the government and academia (pdf). The International Society for Ecological Modelling Global Conference, Baltimore, MD. 8-12 May 2016.

Kaufman, D.E., M.A.M. Friedrichs, W.O. Smith Jr., E.E. Hofmann, J.C.P. Hemmings. Impacts of warming temperatures on Ross Sea biogeochemistry as assessed by 1D model experiments. The International Society for Ecological Modelling Global Conference, Baltimore, MD, U.S.A. 8-12 May 2016.

Shadwick, E., M.A.M. Friedrichs, R. Najjar, and M. Herrmann. Multiple stressors in the estuarine environment: drivers of changes in the Chesapeake Bay CO2 system. The Ocean in a high CO2 world, Hobart, Tasmania, Australia. 3-6 May 2016.

Friedrichs, M.A.M. D. E. Kaufman, R.G. Najjar, H. Tian, Y. Yao, and B. Zhang. Impacts of changing nutrient load on Chesapeake Bay hypoxia and nitrogen cycling over the past century. NASA OCRT Meeting, Silver Spring, MD. 2-4 May 2016.

Signorini, S., A. Mannino, M.A.M. Friedrichs, J.Wilkin and A. Tabatabai. Estuarine Export of Dissolved Organic Carbon to the Mid-Atlantic Bight. AGU-ASLO-TOS Ocean Sciences Meeting, NASA OCRT Meeting, Silver Spring, MD. 2-4 May 2016.

Friedrichs, M.A.M., D.E. Kaufman, R. Najjar, H. Tian, Y. Yao, B. Zhang. Changes in Chesapeake Bay Hypoxia over the Past Century. AGU/ASLO/TOS Ocean Sciences Meeting, New Orleans, LA. 21-26 February 2016.

Irby, I., M.A.M. Friedrichs, C.T. Friedrichs, and the COMT-Chesapeake Bay Hypoxia Team. Challenges associated with modeling low-oxygen waters in Chesapeake Bay: a multiple model comparison. AGU-ASLO-TOS Ocean Sciences Meeting, New Orleans LA. 21-26 February 2016.

Kaufman, D.E., M.A.M. Friedrichs, W.O. Smith Jr., E.E. Hofmann, J.C.P. Hemmings. Environmental Drivers of Biogeochemical Variability in the Southern Ross Sea: Results from a 1D Modeling Study. AGU/ASLO/TOS Ocean Sciences Meeting, New Orleans, LA. 21-26 February 2016.

Lee, Y.J., P.A. Matrai, M.A.M. Friedrichs, V.S. Saba, and the PPARR modeling teams. An assessment of net primary productivity estimates using coupled physical-biogeochemical / earth system models in the Arctic Ocean. AGU-ASLO-TOS Ocean Sciences Meeting, New Orleans LA. 21-26 February 2016.

Moriarty, J.M., C.K. Harris, C. Rabouille, and M.A.M. Friedrichs. Resuspension and Biogeochemistry in Coastal Environments: Results from a Coupled Model for Seabed-Water Column Fluxes. AGU-ASLO-TOS Ocean Sciences Meeting, New Orleans LA. 21-26 February 2016.

Najjar, R., P. Sedwick, M. Mulholland, M.A.M. Friedrichs, A. Thompson, D. Martins, P. Bernhardi, M. Herrmann, L. Price, B. Sohst, C. Sookhdeo, P. St-Laurent, B. Widner. Deposition of atmospheric nitrogen to coastal ecosystems (DANCE): A study in seasonally oligotrophic waters off the eastern U.S. AGU-ASLO-TOS Ocean Sciences Meeting, New Orleans LA. 21-26 February 2016.

Signorini, S., A. Mannino, M.A.M. Friedrichs, J.Wilkin and A. Tabatabai. Estuarine Export of Dissolved Organic Carbon to the Mid-Atlantic Bight. AGU-ASLO-TOS Ocean Sciences Meeting, New Orleans LA. 21-26 February 2016.

Irby, I.D., J. Derr, J. Snouck-Hergronje, and A. Will. Oysters in the Chesapeake Bay: The Economic, Policy, and Legal Landscapes. NOAA Oyster Summit, Fredericksburg, VA. February 2016.

Friedrichs, M.A.M., A. Bever, R.R. Hood, K. Sellner. Comparison of shallow-water models for use in supporting Chesapeake Bay management decision-making. CBP Modeling Workgroup Quarterly Meeting, Annapolis, MD. January 2016.

2015 National/International Presentations

Friedrichs, M.A.M., D.E. Kaufman, R. Najjar, H. Tian, Y. Yao, B. Zhang. Modeling Changes in Chesapeake Bay Nitrogen Fluxes over the Past Century. CERF (Coastal & Estuarine Research Federation) Biennial Meeting, Portland, OR, U.S.A.. 8-12 November 2015.

Moriarty, J.M., C.K. Harris, and M.A.M. Friedrichs. Resuspension and Biogeochemistry: A Coupled Model for Seabed-Water Column Fluxes in Coastal Environments. CERF (Coastal & Estuarine Research Federation) Biennial Meeting, Portland, OR. 8-12 November 2015.

Moriarty, J.M., and C.K. Harris. Resuspension and Sediment Bed Oxygen Consumption: Developing and Testing a Coupled Model. INTERCOH (International Conference on Cohesive Sediment Transport), Leuvan, Belgium. September 6-11, 2015.

Rabouille, C., F. Toussaint, C. Cathalot, J. Rassmann, B. Lansard, N. Laborde, J.M. Moriarty, and C.K. Harris. Temporal variability of carbon recycling in deltaic sediments at different time scales: An example from the Rhone River delta. Goldscchmidt 2015, Prague, Czechoslovakia. August 16-21, 2015.

St.-Laurent, P., M.A.M. Friedrichs, R.G. Najjar, M. Herrmann. Comparing the impact of atmospheric nitrogen deposition and wind mixing on biological productivity during storm events. Ocean Carbon and Biogeochemistry workshop, Woods Hole, MA. July 20-23, 2015.

Friedrichs, M.A.M., I. Irby, C. Friedrichs. COMT Chesapeake Bay hypoxia modeling. COMT Annual Team Meeting, Washington DC. July 30-31, 2015.

Friedrichs, M.A.M., Y. Xiao. Using biogeochemical data assimilation to assess the relative skill of multiple ecosystem models: effects of increasing planktonic food web complexity. MEOPAR/GOV Marine Ecosystem Analysis and Prediction, Halifax, Nova Scotia. 22-24 June 2015.

Irby, I., M.A.M. Friedrichs, C. Friedrichs and the COMT Estuarine Hypoxia Team. Challenges associated with operational modeling of low-oxygen water in Chesapeake Bay: results from a multiple modeling effort. MEOPAR/GOV Marine Ecosystem Analysis and Prediction, Halifax, Nova Scotia. 22-24 June 2015.

Kaufman, D.E., M.A.M. Friedrichs, W.O. Smith, E. E. Hofmann, J.C.P. Hemmings. Biogeochemical modeling of the southern Ross Sea. MEOPAR/GOV Marine Ecosystem Analysis and Prediction, Halifax, Nova Scotia. 22-24 June 2015.

Moriarty, J.M., and C.K. Harris. Resuspension and Sediment Oxygen Consumption: Developing and Testing a Coupled Model. Gordon Conference on Coastal Ocean Modeling, Biddeford, Maine. 7-12 June 2015.

Friedrichs, M.A.M., R. Hood, A. Bever. Comparison of shallow water models for use in supporting Chesapeake Bay management decision-making, STAC Multiple Shallow Model Workshop, Gloucester Point, Virginia. 20 May 2015.

Signorini, S., A. Mannino, J. Wilkin, M.A.M. Friedrichs, R.R. Najjar. Dissolved organic carbon fluxes and stocks in the Mid-Atlantic Bight. NASA Carbon Cycle & Ecosystems Joint Science Workshop, Hyattsville, Maryland. 20-22 April 2015.

Friedrichs, M.A.M., W-J Cai, E.E.Hofmann, S. Lohrenz, R. Najjar, H. Tian. Lateral fluxes of carbon and nutrients from land to the coastal ocean. Invited talk for the NASA Carbon Cycle & Ecosystems Joint Science Workshop, Hyattsville, Maryland. 20-22 April 2015.

Feng, C., M.A.M. Friedrichs, H. Tian, Q. Yang, R Najjar. Impacts of land cover and land use change on the nitrogen dynamics of the Chesapeake Bay over the past 100 years. NASA Carbon Cycle & Ecosystems Joint Science Workshop, Hyattsville, Maryland. 20-22 April 2015.

Mannino, A. C. Del Castillo, M.A.M. Friedrichs, P. Hernes, P. Matrai, J. Salisbury, M.A. Tzortziou. Arctic-COLORS – Coastal Land Ocean interactions in the Arctic.  NASA Carbon Cycle & Ecosystems Joint Science Workshop, Hyattsville, Maryland. 20-22 April 2015. 

Najjar, R., M.A.M. Friedrichs, E. Hofmann, K. Hyde, A. Mannino, H. Tian, J. Wilkin, S. Signorini. Syneristic impacts of population growth, urbanization, and climate change on watersheds and coastal ecology of the northeastern United States. NASA Carbon Cycle & Ecosystems Joint Science Workshop, Hyattsville, Maryland. 20-22 April 2015.

Tian, H. Q. Yang, W. Ren, C. Lu, B. Zhang, S. Pan, B. Tao, S. Lohrenz, W-J Cai, R. He, M.A.M. Friedrichs, R. Najjar. Contemporary and projected lateral carbon fluxes from North America to Oceans: A process-based modeling study. NASA Carbon Cycle & Ecosystems Joint Science Workshop, Hyattsville, Maryland. 20-22 April 2015.

Lee, Y., P. Matrai, M.A.M. Friedrichs, V. Saba. An assessment of ocean color model estimates of ntet primary productivity in the Arctic Ocean. NASA Carbon Cycle & Ecosystems Joint Science Workshop, Hyattsville, Maryland. 20-22 April 2015.

Friedrichs, M.A.M., D. Forrest, C. Friedrichs, R. Hood, I. Irby, L. Lanerolle, M. Scully and H. Wang. The Estuarine Hypoxia component of the coastal ocean modeling testbed: providing environmental intelligence to decision-makers in the Chesapeake Bay. Skill assessment of multiple hydrodynamic-dissolved oxygen models in Chesapeake Bay. NOAA’s 6th annual Testbed and Proving Ground Workshop, Boulder, Colorado. 14-16 April 2015.

Irby, I., M.A.M. Friedrichs, Y. Feng, R. Hood, J. Testa, C. Friedrichs. Skill Assessment of Multiple Hypoxia Models in the Chesapeake Bay and Implications for Management Decisions (pdf poster). NOAA’s 6th annual Testbed and Proving Ground Workshop,  Boulder, Colorado. 14-16 April 2015.

Moriarty, J.M., and C.K. Harris.  Resuspension and Sediment Bed Oxygen Consumption: Developing and Testing a Coupled Model. Atlantic Estuarine Research Society (AERS) Spring Meeting, Wanchese, North Carolina. 12-14 March 2015.

Signorini, S., A. Mannino, J. Wilkin, M.A.M. Friedrichs, R. Najjar. Dissolved organic carbon stocks and fluxes in the mid-Atlantic Bight. 5th bi-annual North American Carbon Program Principal Investigator Meeting, Washington D.C. January 2015. 

Tian, H., Q. Yang, B. Zhang, J. Yang, S. Pan, W. Ren, C. Lu, B. Tao, S. Lohrenz, W-J. Cai, R. He, M.A.M Friedrichs and R. Najjar. Contemporary and projected lateral carbon fluxes from North America to Oceans: A process-based modeling study. 5th bi-annual North American Carbon Program Principal Investigator Meeting, Washington D.C. January 2015.

Feng, Y., M.A.M. Friedrichs, J. Wilkin, H. Tian, Q. Yang, E. Hofmann, J. Wiggert and R. Hood. Impacts of land cover and land use change on the nitrogen dynamics of the Chesapeake Bay for the past 100 years. 5th bi-annual North American Carbon Program Principal Investigator Meeting, Washington D.C. January 2015.