Satellite and Aircraft Observations of Snowfall Signature at Microwave Frequencies
نویسندگان
چکیده
Snowfall signatures over ocean are analyzed using satellite and airborne microwave radiometer measurements at frequencies ranging from 37 to 340 GHz. Data used in the analysis include satellite data from the Advanced Microwave Scanning Radiometer – EOS and the Advanced Microwave Sounding Unit – B, and airborne data from a millimeter-wave radiometer and a dual-frequency precipitation radar during January 2003 over Japan Sea. Through two case studies, the sensitivity of microwave channels to snowfall associated with shallow convective clouds is investigated, and the optimal channel or channel combinations for snowfall retrievals are discussed. In addition, the dependency of brightness temperatures on the vertical structure of snow clouds is also discussed based on observational data.
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