Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Physical scientist Martha Anderson and hydrologist Bill Kustas with USDA’s Agricultural Research Service view a global scale map of evapotranspiration generated with the Atmosphere Land EXchange Inverse (ALEXI) model.
Public Domain.
