F. G. Lemoine, and D. E. Smith
Laboratory for Terrestrial Physics
NASA Goddard Space Flight Center
Greenbelt, Maryland 20771 U.S.A.
(email: flemoine@olympus.gsfc.nasa.gov;
email: dsmith@tharsis.gsfc.nasa.gov)
R. Smith and L. Kunz
National Imagery and Mapping Agency
Bethesda, Maryland 20816
(email: kunzl@nima.mil)
N. K. Pavlis, S. M. Klosko, D. S. Chinn, M. H. Torrence,
R. G. Williamson, C. M. Cox, K. E. Rachlin, and Y. M. Wang
Raytheon-STX Corporation
Greenbelt, Maryland 20770 U.S.A.
(email: npavlis@geodesy2.gsfc.nasa.gov; email:sklosko@magus.stx.com)
E. C. Pavlis
Laboratory for Terrestrial Physics
NASA Goddard Space Flight Center &
Joint Systems for Earth Systems Technology, University of Maryland
Baltimore, Maryland 21250 U.S.A.
(email: epavlis@helmert.gsfc.nasa.gov)
S. C. Kenyon, R. Salman, and R. Trimmer
National Imagery and Mapping Agency
St. Louis, Missouri 63118 U.S.A.
( email: kenyons@nima.mil)
R. H. Rapp
Department of Civil and Environmental Engineering and Geodetic Science
The Ohio State University
Columbus, Ohio 43210 U.S.A.
(email: rhrapp@ohstmvsa.acs.ohio-state.edu)