One aspect of the modernized observational capability of the National Weather Service will be geostationary sounding of temperature and moisture from GOES-I, currently scheduled for launch in 1992.1 The capability has evolved from ten years of research with the VISSR (Visible Infrared Spin Scan Radiometer) Atmospheric Sounder (VAS). This article summarizes that evolution and describes the initial operational sounder products expected of GOESI. The effect on products caused by problems in meeting performance specifications are discussed. The outlook for follow-on sounders in the next series (circa 2000) of GOES is also briefly treated.

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Footnotes

+NOAA/NESDIS Systems Design and Applications Branch

*Cooperative Institute for Meteorological Satellite Studies, Madison, Wisconsin

1Editor's Note: Most recent estimate for the launch of GOES-I is the third quarter of 1993. The additional delay is required to address continuing instrument problems.