John C. Ries

John C. Ries, Ph.D.
Senior Research Scientist

Research Interests
Dr. Ries is a senior research scientist at the Center for Space Research at the University of Texas at Austin. His research interests include orbit mechanics, geodesy, relativity, and the application of computers and computational techniques to the solution of problems in those areas. He has worked with laser range, altimeter, and Doppler data from numerous satellites, including LAGEOS-1/-2, Starlette, Stella, Ajisai, SeaSat, ERS-1/-2, SPOT-2, TOPEX/POSEIDON, and Jason-1. His current research efforts are focused on improving gravity model determination for the Gravity Recovery and Climate Experiment (GRACE) and reference frame determination from laser ranging data.

Dr. Ries is a fellow of the International Association of Geodesy, a member of the International DORIS Service Governing Board, and a member of the Journal of Geodesy Editorial board. He received the NASA Exceptional Technology Achievement Medal in 2010.


B.S., Mathematics, Michigan Technological University, 1972
M.S., Mathematics, Michigan Technological University, 1975
PhD., Aerospace Engineering, The University of Texas at Austin, 1989

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