Acknowledgements
This work was supported by grants from the National
Aeronautics and Space Administration Office of Earth
Science Enterprise and the National Science Foundation
Office of Polar Programs. Portions of the research described
in this paper were carried out at the Jet Propulsion
Laboratory, California Institute of Technology, under
contract with the National Aeronautics and Space Administration.
SeaWinds data were provided by the JPL Physical
Oceanography DAAC. Long-term weather station data were
provided by the National Climatic Data Center, Bonanza
Creek NSF LTER office and National Research Conservation
Service Offices in Alaska and Colorado. Tower
meteorological and CO2 flux data were kindly provided by
Niwot Ridge and NOBS AmeriFlux site research teams with
financial support from the Department of Energy and NASA.