1. Earth Science and Observation Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USA
2. Department of Electrical and Computer Engineering, Brigham Young University, Provo, UT, USA
3. Baltimore County at NASA’s Goddard Space Flight Center, University of Maryland, Greenbelt, MD, USA
4. Department of Electrical Engineering, Stanford University, Stanford, CA, USA
5. National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, USA