Chris Ruf received the B.A. degree in physics from Reed College and the Ph.D. degree in electrical and computer engineering from the University of Massachusetts. He is currently a Professor of Climate and Space Science at the University of Michigan. He has worked previously at Intel Corporation, the NASA Jet Propulsion Laboratory, and Penn State University. Prof. Ruf’s research interests include remote sensing techniques, atmospheric and oceanographic applications, and sensor technology development. He is former Editor-in-Chief of the IEEE Transactions on Geoscience and Remote Sensing and has served on the editorial boards of Radio Science and the Journal of Atmospheric and Oceanic Technology. Prof. Ruf is the recipient of four NASA Certificates of Recognition and seven NASA Group Achievement Awards, as well as the 1997 IEEE TGRS Best Paper Award, the 1999 IEEE Resnik Technical Field Award, the 2006 IGARSS Best Paper Award, and the 2014 IEEE GRSS Outstanding Service Award. He is currently Principal Investigator of the NASA Cyclone Global Navigation Satellite System (CYGNSS) mission.