Evolution and characterization of drought events from GRACE and other satellite and observation.

Meng Zhao1, Geruo A2, Isabella Velicogna1 and John S Kimball3, (1)University of California Irvine, Irvine, CA, United States, (2)University of California Irvine, Department of Earth System Science, Irvine, CA, United States, (3)University of Montana, Numerical Terradynamic Simulation Group, College of Forestry & Conservation, Missoula, MT, United States