Department of Climate and Space Sciences and Engineering in the College of Engineering at the University of Michigan


Chris Ruf
[ Download CV ]

Chris Ruf

Frederick Bartman Collegiate Professor of Climate and Space Science

Graduate advisor
Program: Ph.D. Concentration in Geoscience and Remote Sensing

Office: SRB 2527A
Phone: (734) 764-6561
Fax: (734) 936-0503


Ph.D., Electrical & Computer Engineering, University of Massachusetts, Amherst
B.A., Physics, Reed College


Earth and Planetary Remote Sensing

Principal Investigator, NASA Cyclone Global Navigation Satellite System Earth Venture Mission

Specializations and Research Interests

  • Earth Environmental Remote Sensing:
    • Global Navigation Satellite System Mission Execution
    • Design and fabrication of next-generation satellite microwave radiometers
    • Novel methods for maintaining high accuracy and stability calibration of satellite sensors to detect minute global change signatures
    • Application of inversion techniques and multi-sensor assimilation to remote sensing
    •  Hardware and algorithmic aspects of satellite microwave radiometry
  • Synthetic thinned aperture radiometry
  • Mitigation of radio frequency interference
  • Self-contained end-to-end radiometer calibration system
  • Use of stationary statistical properties of upwelling radiances to constrain absolute accuracy and long term stability of satellite measurements
  • Profiling of lower, middle and upper atmosphere using multispectral, multisensor and climatological databases

Honors, Awards and Accomplishments

  • Instrument Scientist, NASA TOPEX Microwave Radiometer
  • Principal Investigator, Calibration/validation of US Navy GEOSAT Follow-On Water Vapor Radiometer
  • Science Team Member, NASA Jason-1 Microwave Radiometer
  • Science Team Member, NASA Aquarius Microwave Radiometer
  • Developed new method for estimating the depth of the marine boundary layer (BLD) from space using horizontal turbulence structure of vertically integrated atmospheric water vapor
  • Developed new method for absolute and relative calibration of spaceborne microwave radiometers using lower bound on a cumulative statistic of the measured radiance
  • Advanced technologies in support of synthetic thinned aperture radiometer (STAR) in space (antenna arrays, real/synthetic aperture sharing, digital correlators, calibration techniques)
  • Derived correction to standard model for pressure broadening of atmospheric absorption line of water vapor at 22.235 GHz based on microwave spectrometer observations
  • 2014 IEEE Geoscience and Remote Sensing Society Outstanding Service Award

  • 2006 International Geoscience and Remote Sensing Symposium Prize Paper Award for Detection of RFI by its Amplitude Probability Distribution

  • Fellow, IEEE (2001)
  • IEEE Judith A. Resnik Technical Field Award, Contributions to the absolute calibration of spaceborne microwave radiometers (1999)
  • IEEE Transactions on Geoscience & Remote Sensing Prize Paper Award, Retrieval of tropospheric water vapor scale height from horizontal turbulence (1997)
  • NASA Group Achievement Award, Juno Proposal Team (2012)
  • NASA Group Achievement Award, Aquarius Launch, Early Orbit Operations, and Commissioning (2012)
  • NASA Group Achievement Award, Genesis and Rapid Intensification Processes (GRIP) Airborne Earth Science Mission (2011)
  • NASA Group Achievement Award, Lightweight Rainfall Radiometer (2004)
  • NASA Group Achievement Award, TOPEX Joint Verification Team (1994)
  • NASA Group Achievement Award, TOPEX precision orbit determination (1993)
  • NASA Group Achievement Award, TOPEX Microwave Radiometer (1993)
  • NASA Certificate of Recognition, Piezoelectric reflecting array for reflector surface distortion compensation (1992)
  • NASA Certificate of Recognition, Synthetic aperture interferometric radiometer image reconstruction error analysis (1992)
  • NASA Certificate of Recognition, Sparse aperture interferometric radiometer - Refining the two-dimensional antenna configuration (1990)

Professional Service

  • Editor in Chief, IEEE Transactions on Geoscience and Remote Sensing  (2009-2012)
  • Member, URSI Commission F (Remote Sensing)
  • Former Member, National Academies Committee on Radio Frequency
  • Former Associate Editor, AGU Radio Science
  • Former Guest Editor, IEEE Transactions on Geoscience and Remote Sensing
  • Former Guest Editor, AGU Radio Science
  • Former Associate Editor, AMS Journal of Atmospheric and Oceanic Technology
  • Associate Editor, IEEE Transactions on Geoscience and Remote Sensing
  • Former Editor, IEEE Geoscience and Remote Sensing Society Newsletter


Updated: 2018-07-02