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Upper Atmosphere Research SatelliteThe Upper Atmosphere Research Satellite (UARS) is an orbital 14,500-pound U.S. observatory that made the most extensive study ever conducted of the Earth's troposphere, the upper level of the planet's envelope of life-sustaining gases which also include the protective ozone layer. UARS has ten sensing and measuring devices: - Cryogenic Limb Array Etalon Spectrometer (CLAES)
- Improved Stratospheric and Mesospheric Sounder (ISAMS)
- Microwave Limb Sounder (MLS)
- Halogen Occultation Experiment (HALOE)
- High Resolution Doppler Imager (HRDI)
- Wind Imaging Interferometer (WINDII)
- Solar Ultraviolet Spectral Irradiance Monitor (SUSIM)
- Solar/Stellar Irradiance Comparison Experiment (SOLSTICE)
- Particle Environment Monitor (PEM)
- Active Cavity Radiometer Irradiance Monitor (ACRIM II).
UARS was deployed as the primary mission of STS-48, in September 1991. See also - UARS summary from NASA Earth Science: http://www.earth.nasa.gov/history/uars/uars.html
- UARS project science office page: http://umpgal.gsfc.nasa.gov/
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