These data provide Level 4 estimates of Net Ecosystem Exchange (NEE) of CO2 derived from the Ecosystem Demography Biosphere Model (ED2), and augmented by the AirMOSS-derived L2/3 root zone soil moisture data as an additional input. The AirMOSS soil moisture data were used to estimate the sensitivity of carbon fluxes to soil moisture and to diagnose and improve estimation and prediction of NEE by constraining the model's predictions of soil moisture and its impact on above- and below-ground fluxes.
NEE data are available at a daily temporal resolution and a spatial resolution of 30 arc-seconds (~1 km) for seven of the sites covered by the AirMOSS flights, each site spanning ~2500 km2. The daily NEE estimates are generally available from October 2012 through October 2014, although the exact time ranges vary by site. Additionally, NEE data are available for the conterminous USA at a spatial resolution of 50 km. Modeled estimates are provided at hourly and monthly temporal resolutions, from January 2012 through October 2014.
Data Authors: Zhang, K., A.A. Ali, A. Antonarakis, and P.R. Moorcroft
Data Set DOIs: http://dx.doi.org/10.3334/ORNLDAAC/1422 and http://dx.doi.org/10.3334/ORNLDAAC/1423
Data center: ORNL DAAC
Sponsor: NASA EOSDIS