Eddy covariance tower

USGS scientists and cooperators service an eddy covariance (EC) station located in a tidal freshwater marsh at Salvador Wildlife Management Area, Louisiana, USA. EC stations allow agency scientists to asses the net exchange of CO2 and CH4 from wetlands over large spatial scales, and help determine the carbon sequestration capacity of managed marshes while also considering the differential radiative balance created by those two very different greenhouse gases. This research was published in Journal of Geophysical Research Biogeosciences, doi:10.1002/2015JG003224. (photo: Ken W. Krauss, U.S. Geological Survey