Reference:
Cai, X. and P. Thenkabail (2010). Using remote sensing to assess crop water productivity. SPIE Newsroom, doi: 10.1117/2.1201002.002576
+ Using remote sensing to assess crop water productivity [external link]

Join the Pale Blue Dot Visualization Challenge and Be Part of a Brighter Future
The Pale Blue Dot Visualization Challenge—aimed at making Earth observation data accessible to everyone—has officially kicked off.