|Defense Meteorological Satellite Program (DMSP) Film
|The United States Air Force Defense Meteorological Satellite Program (DMSP) Operational
Linescan System (OLS) is a polar orbiting meteorological sensor with two spectral
bands (visible and thermal infrared) capable of acquiring global coverage on a daily
basis at .27 km spatial resolution. Until 1992, there was no digital archive for DMSP-OLS
data. Air Force meteorologists did their analysis using visible and thermal band film
strips. The National Snow and Ice Data Center maintained an archive for OLS film from
1972-1992 through a cooperative institute with NOAA. In 1992, a digital archive for
the OLS data was established at the NOAA National Geophysical Data Center (NGDC).
In 1996, NGDC had the film archive shipped to the Federal Records Center at the Denver
Federal Center due to storage limitations.