[1] NOAA, Space Environm Ctr, Boulder, CO 80303 USA
[2] Interferometr Inc, Chantilly, VA 20151 USA
[3] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA
[4] Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA
[5] Univ Bremen, Inst Environm Phys, D-28334 Bremen, Germany
[6] Sci Syst & Applicat Inc, Lanham, MD 20706 USA