1 NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA. Department of Earth System Science, University of California, Irvine, CA, USA. Department of Civil and Environmental Engineering, University of California, Irvine, CA, USA. james.famiglietti@jpl.nasa.gov.
2 Centre National d'Etudes Spatiales-Laboratoire d'Etudes Géophysique et Océanographique Spatiales (CNES/LEGOS), Toulouse, France. International Space Science Institute, Bern, Switzerland.
3 Institute of Geodesy and Geoinformation, University of Bonn, Germany.
4 NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.
5 NASA Goddard Space Flight Center, Greenbelt, MD, USA.
6 NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA. Department of Earth System Science, University of California, Irvine, CA, USA.