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
Lake Erie CenterEnvironmental Sensor
Network
The Framework
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
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
Station Telemetry
• 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
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
)
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.
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