lake erie center environmental sensor network
DESCRIPTION
Lake Erie Center Environmental Sensor Network. The Framework. Eddy Covariance Method. Quantifies gas exchange rate as a covariance of vertical wind velocity and CO 2 concentration Relies on a large homogenous area (footprint) for measurement - PowerPoint PPT PresentationTRANSCRIPT
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Lake Erie CenterEnvironmental Sensor
Network
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The Framework
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Eddy Covariance Method• Quantifies gas exchange rate as a
covariance of vertical wind velocity and CO2 concentration
• Relies on a large homogenous area (footprint) for measurement
• Requires state-of-the-art instrumentation with very quick response (10 hz)
• Most direct and defensible way to measure ecosystem gas fluxes
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Swanton, OhioThe Oak Openings MetroParkis the sole Ameriflux tower site in Ohio. Measureingthe carbon sequestration capacity of managed forest ecosystems.
Port Clinton, OhioCO2, CH4, H2O, and energy fluxes in a marshland ecosystem of Lake Erie shoreline.
Curtice, OhioCO2, CH4, H2O, N2O, and energy fluxes in an agricultural field are measured using an open-path eddy covariance and static chamber.
Western basin, Lake ErieCO2, H2O, and energy fluxes of a freshwater lake ecosystem on top of the city of Toledo water intake crib.
Western basin, Lake ErieCO2, H2O, and energy fluxes of a freshwater lake ecosystem on top of the U.S. Coast Guard’s Toledo Light #2 light beacon.
Station Locations
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Station Telemetry
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• Mounted on the bow of the Mayflier II
• Route passes through the microcystis algal bloom at the estuarine of the Maumee River
• Through the sedimentary flow south of the Detroit River
• Near complete depiction of spatial fluxes in the Western basin
Mobile Flux Station
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Preliminary ResultsPermS1 Fall 2011
10/11/11 0:30 10/15/11 0:30 10/19/11 0:30 10/23/11 0:30 10/27/11 0:30 10/31/11 0:30 11/4/11 0:30 11/8/11 0:30 11/12/11 0:30-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
0
5
10
15
20
25
30CO2 FluxAir Temp
CO
2 flu
x (
mg
m-2
s-1)
Air
tem
pera
ture
(oC
)
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Marshland (coastal wetland) and Cropland (agricultural field) Sites
• Marshland releases evident methane during the day
• Cropland releases methane during the day and uptakes small amounts during the night
• The orders of methane fluxes are much smaller in the cropland than in the marshland.
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Acknowledgments• Partially funded by the FSML program of
the NSF, NOAA, and USDAFS
• Overseen by Jiquan Chen, Carol Stepien, Michael Deal, Johan Gottgens, Housen Chu, Richard Becker, Thomas Bridgeman, and Kevin Czajkowski at The University of Toledo