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Matrosov S. Y. (March 2007): Potential for attenuation-based estimations of rainfall rate from CloudSat. Geophys. Res. Lett., 34, L05817. doi:10.1029/2006GL029161

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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.

Item Type: Article
Subjects: PSD Publications
Divisions: Physical Sciences Division
DOI: 10.1029/2006GL029161