A Relationship Between SSM/I Brightness Temperatures and Earth Surface Emissivities at 91 and 150 GHz

The Special Sensor Microwave Water Vapor Sounder (SSM/T-2) is onboard the Defense Meteorological Satellite Program (DMSP) F-11 satellite and consists of five channels: three located along the 183 GHz water vapor absorption line, one on the wing of this line at 150 GHz, and a 91 GHz window channel. A...

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Bibliographic Details
Main Author: Felde, Gerald W
Format: Report
Language:English
Subjects:
ATMOSPHERIC SOUNDING
BRIGHTNESS
METEOROLOGICAL SATELLITES
Meteorology
MICROWAVE OPTICS
OPTICAL DETECTORS
Optics
PE62101F
RADIATIVE TRANSFER
REPRINTS
TEMPERATURE
WATER VAPOR
WEATHER FORECASTING
WUPL6670GR15
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Summary:The Special Sensor Microwave Water Vapor Sounder (SSM/T-2) is onboard the Defense Meteorological Satellite Program (DMSP) F-11 satellite and consists of five channels: three located along the 183 GHz water vapor absorption line, one on the wing of this line at 150 GHz, and a 91 GHz window channel. Also onboard this satellite is the Special Sensor Microwave/Imager (SSM/I) which has seven channels - 19, 37, and 85 GHz vertical and horizontal polarizations, and 22 GHz vertical polarization. Estimation of surface emissivities at 91 and 150 GHz is a key component in the SSM/T-2 water vapor profile retrieval algorithm. This study relates 91 and 150 GHz emissivity values, retrieved from a radiative transfer model using collocated SSM/T-2 brightness temperature measurements and radiosonde-measured atmospheric profiles, to SSM/T-2 and SSM/I brightness temperature measurements. Results suggest the possible use of SSM/I brightness temperature measurements for estimation of surface emissivities at 91 and 150 GHz. Pub. in Conference on Satellite Meteorology and Oceanography (7th), p132-135, 6-10 Jun 1994.