Abstract
Satellite data are available to meteorological centers around the world in two forms: (1) real-time reception directly from the spacecraft to the users; (2) processed data via the Global Telecommunications System (GTS). Real-time data is broadcast by satellites operated by both the U.S. and the U.S.S.R. From the NOAA series, Automatic Picture Transmission (APT) has been in wide use for 19 years. High Resolution Picture Transmission (HRPT) has been available to users with more sophisticated receiving equipment for the past 10 years. The Meteor satellites have been broadcasting for over 10 years. From the geostationary satellites (GOES), specialized products are broadcast via weather facsimile (WEFAX), and for users with very sophisticated ground systems, real-time geostationary images are available. Derived data, i.e., vertical temperature soundings of the atmosphere, etc., are routinely available on the GTS. The characteristics, utility, current utilization and future developments of these services will be reviewed and discussed.
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