@article{oai:nagasaki-u.repo.nii.ac.jp:00026806,
 author = {SETO, Shinta and IGUCHI, Toshio and MENEGHINI, Robert and AWAKA, Jun and KUBOTA, Takuji and MASAKI, Takeshi and TAKAHASHI, Nobuhiro},
 issue = {2},
 journal = {Journal of the Meteorological Society of Japan},
 month = {},
 note = {In this paper, precipitation rate retrieval algorithms for the Global Precipitation Measurement mission’s Dualfrequency Precipitation Radar (DPR) are developed. The DPR consists of a Ku-band radar (KuPR; 13.6 GHz) and a Ka-band radar (KaPR; 35.5 GHz). For the KuPR, an algorithm similar to the Tropical Rainfall Measuring Mission’s Precipitation Radar algorithm is developed, with the relation between precipitation rate R and massweighted mean diameter Dm (R−Dm relation) replacing the relation between the specific attenuation k and effective radar reflectivity factor Ze . The R−Dm relation can also be applied to the KaPR and dual-frequency algorithms. In both the single-frequency and dual-frequency algorithms, the forward retrieval method is applied with an as sumed adjustment factor for the R−Dm relation (ε) and the results are evaluated to select the best value of ε. The advantages of the dual-frequency algorithm are the availability of the dual-frequency surface reference technique and the ZfKa method, which is a method to use the attenuation-corrected radar reflectivity factor Zf of KaPR, to select ε as well as the possibility to selectively use measurements from KuPR or KaPR. This paper also describes the derivation of the scattering table and the R−Dm relation as well as the procedure for non-uniform beam filling correction in detail. The outputs are then statistically analyzed to demonstrate algorithm performance., Journal of the Meteorological Society of Japan, 99(2), pp. 205-237; 2021},
 pages = {205--237},
 title = {The Precipitation Rate Retrieval Algorithms for the GPM Dual-frequency Precipitation Radar},
 volume = {99},
 year = {2021}
}