Physics
Scientific paper
Mar 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3405817m&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 5, CiteID L05817
Physics
22
Atmospheric Composition And Structure: Radiation: Transmission And Scattering, Atmospheric Processes: Precipitation (1854), Radio Science: Radar Atmospheric Physics (1220), Radio Science: Radio Wave Propagation, Radio Science: Remote Sensing
Scientific paper
Attenuation of radar signals in rain increases with frequency while the variability of non-attenuated reflectivity of rainfall diminishes as resonance scattering effects become more pronounced at higher radar frequencies. At mm-wavelength frequencies, attenuation often becomes the dominant factor responsible for apparent reflectivity changes in vertical. This study presents an attenuation-based method to retrieve vertical profiles of rain rate from nadir-pointing W-band (94 GHz) radars. The quantitative assessments of retrieval errors are discussed, and an illustration of the retrievals using measurements from the spaceborne 94 GHz CloudSat radar is shown. As a consistency check, the spaceborne W-band radar retrievals are compared with concurrent estimates from a ground-based weather surveillance radar.
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