1. ESIME Ticomán, Instituto Politécnico Nacional,Mexico City,Mexico
2. University of Florida,Center for Remote Sensing,Gainesville,FL,USA
3. USA Science Systems and Applications, Inc,Hydrological Sciences Laboratory at NASA Goddard Space Flight Center, MD,Lanham,MD,USA
4. University of Michigan,Dept. of Climate and Space Science and Engineering,Ann Arbor,MI,USA