Experimental,Harmful,Algal,Bloom,and, Hypoxia,Forecasts ... · Processes&thatinfluence&hypoxia •...
Transcript of Experimental,Harmful,Algal,Bloom,and, Hypoxia,Forecasts ... · Processes&thatinfluence&hypoxia •...
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Experimental Harmful Algal Bloom and Hypoxia Forecasts for Lake Erie
Mark D. Rowe1, E. J. Anderson2, S. A. Ruberg2, S. Moegling3, D. Beletsky1, H. Zhang1,T. H. Johengen1, C. A. Stow2 1University of Michigan, Coopera6ve Ins6tute for Great Lakes Research 2NOAA Great Lakes Environmental Research Laboratory 3Cleveland Division of Water
Photo: Gus Chan, The Plain Dealer
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Two projects
• Experimental Lake Erie Harmful Algal Bloom Tracker (HAB Tracker) – Development funded by the Great Lakes RestoraIon
IniIaIve and NOAA GLERL
• Experimental Lake Erie Hypoxia Forecast (LEOFS Hypoxia) – Development funded by NOAA Coastal Hypoxia Research
Program
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Research to OperaIons at NOAA
hOps://hmt.noaa.gov/news/2013/092013.html
NOAA research labs and partners
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HAB BulleIn transiIoned to operaIons this year
hOps://Idesandcurrents.noaa.gov/hab/lakeerie_bulleIns/bulleIn_current.pdf
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HAB Tracker development Imeline • 2014
– First version of model on GLERL website
• 2015 – Model linked to next generaIon Great Lakes Coastal ForecasIng
System hydrodynamic model (FVCOM)
• 2016 – Model updated to simulate verIcal distribuIon of buoyant Microcys6s
colonies – Model skill assessment conducted (Rowe et al. 2016. Journal of Geophysical Research – Oceans, 121, doi:10.1002/2016JC011720.)
– User feedback solicited • 2017
– Website presentaIon updated according to user feedback
• 2019: TransiIon to operaIons at NOAA
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hOps://www.glerl.noaa.gov/res/HABs_and_Hypoxia/habTracker.html
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OperaLonal Lake Erie Hypoxia ForecasLng for Public Water Systems Decision Support
Project goal Develop a model that can forecast episodes of hypoxia at water intakes on Lake Erie that is suitable for transiIon to operaIonal use at NOAA University of Michigan CIGLR Mark D. Rowe, Dmitry Beletsky, Hongyan Zhang, Thomas H. Johengen NOAA GLERL Craig A. Stow, Eric J. Anderson, Steve A. Ruberg, Doran M. Mason Collaborators ScoO Moegling Cleveland Division of Water Paris D. Collingsworth Purdue University Richard T. Kraus US Geological Survey Ed M. Verhamme LimnoTech This research is funded by the NaIonal Oceanic and Atmospheric AdministraIon NaIonal Centers for Coastal Ocean Science Center for Sponsored Coastal Ocean Research under award NA16NOS4780209 to University of Michigan and NOAA GLERL
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Hypoxia forecast development Imeline • 2017-‐2020
– Development and evaluaIon of physical dissolved oxygen model – Field data collecIon – User feedback and needs assessment – Development and evaluaIon of biophysical dissolved oxygen model – Evaluate and improve Lake Erie hydrodynamic model
• 2021 – TransiIon to operaIons at NOAA (if users request it)
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Developing the Lake Erie Hypoxia Forecast Model We need your input!
• What: A focus group @ your plant to help develop a hypoxia forecast model that supports your plant’s informaIon needs
• When: Schedule your plant’s focus group between • November – December, 2017
How to get involved: Contact Mark Rowe, or Devin Gill.
Devin Gill [email protected] (734) 741-‐2283
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Analysis of 2017 hypoxia events
July 4 July 18 July 30
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Processes that influence hypoxia
• Thickness of the hypolimnion (cold boOom layer of the lake) – A thin hypolimnion is depleted of oxygen more quickly than a thick
one, assuming uniform rates of biochemical oxygen demand – If the epilimnion (surface layer) is in contact with the boOom, hypoxia
will not be present
• Hypolimnion thickness is influenced by upwelling/downwelling – Upwelling/Downwelling is driven by wind, and modified by
Earth’s rotaIon and the shape of the lake basin
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A few conceptual diagrams
Influence of wind and Earth’s rotaIon on upwelling/downwelling
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Surface currents are shiled to the right of wind direcIon (Ekman transport)
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hOp://oceanmoIon.org/html/background/upwelling-‐and-‐downwelling.htm
At the coast, Ekman transport causes upwelling/downwelling
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Ocean CirculaIon. 1989. Oxford: Pergamon Press.
Circular wind moIon elevates or supresses the thermocline
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Analysis of 2017 hypoxia events
July 4 July 18 July 30
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Cleveland Port Glasgow, Ontario
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Cleveland Port Glasgow, Ontario
Morgan (45176)
Wind Farm
Dead Zon
e bu
oy
(451
64)
Environm
ent
Canada buo
y
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Forecast of July 4-‐6 upwelling event provided on June 29
hOps://www.glerl.noaa.gov//res/HABs_and_Hypoxia/hypoxiaWarningSystem.html
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Analysis of 2017 hypoxia events
July 4 July 18 July 30
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Forecast of July 18-‐19 upwelling event provided on July 17
hOps://www.glerl.noaa.gov//res/HABs_and_Hypoxia/hypoxiaWarningSystem.html
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Analysis of 2017 hypoxia events
July 4 July 18 July 30
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Forecast of July 30 upwelling event provided on July 29
hOps://www.glerl.noaa.gov//res/HABs_and_Hypoxia/hypoxiaWarningSystem.html
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Forecast of July 30 upwelling event provided on July 29
hOps://www.glerl.noaa.gov//res/HABs_and_Hypoxia/hypoxiaWarningSystem.html
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Summary • Physical dissolved oxygen model is showing promise in
simulaIng – SpaIal paOerns of hypoxia – Upwelling events
• PredicIons at specific water intakes are challenging
• Further evaluaIon and improvement of hydrodynamic and hypoxia models is ongoing.
• We propose to visit plants in November-‐December for addiIonal needs assessment and feedback: Devin Gill