{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T21:40:54Z","timestamp":1787175654206,"version":"build-2736575974"},"reference-count":60,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2020,9,14]],"date-time":"2020-09-14T00:00:00Z","timestamp":1600041600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the National Nature Science Foundation of China","award":["41975066"],"award-info":[{"award-number":["41975066"]}]},{"name":"the Beijige Open Research Fund for Nanjing Joint Center of Atmospheric Research","award":["NJCAR2018ZD03"],"award-info":[{"award-number":["NJCAR2018ZD03"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Hydrological calibration of raw weather radar rainfall estimation relies on in situ rainfall measurements. Raindrop size distribution (DSD) was collected during three typical Mei-Yu rainstorms in July 2014 using three particle size velocity (Parsivel) DSD sensors along the Mei-Yu front in Nanjing, Chuzhou, and the western Pacific, respectively. To improve the radar precipitation estimation in different parts of the Mei-Yu front, a scaling method was adopted to formulate the DSD model and further derive the Z\u2013R relations. The results suggest a distinct variation of DSDs in different parts of the Mei-Yu front. Compared with statistical radar Z\u2013ARb relations obtained by mathematical fitting techniques, the use of a DSD model fitting based on a scaling law formulation theoretically shows a significant improvement in both stratiform (33.9%) and convective (2.8%) rainfall estimations of the Mei-Yu frontal system, which indicates that using a scaling law can better reflect the DSD variations in different parts of the Mei-Yu front. Polarimetric radar has indisputable advantages with multiparameter detection ability. Several dual-polarization radar estimators are also established by DSD sensor data, and the R(ZH, ZDR) estimator is proven to be more accurate than traditional Z\u2013R relations in Mei-Yu frontal rainfall, with potential applications for operational C-band polarimetric radar.<\/jats:p>","DOI":"10.3390\/s20185257","type":"journal-article","created":{"date-parts":[[2020,9,14]],"date-time":"2020-09-14T20:51:12Z","timestamp":1600116672000},"page":"5257","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Improving Radar Rainfall Estimations with Scaled Raindrop Size Spectra in Mei-Yu Frontal Rainstorms"],"prefix":"10.3390","volume":"20","author":[{"given":"Hepeng","family":"Zheng","sequence":"first","affiliation":[{"name":"College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1927-7224","authenticated-orcid":false,"given":"Zuhang","family":"Wu","sequence":"additional","affiliation":[{"name":"College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lifeng","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yanqiong","family":"Xie","sequence":"additional","affiliation":[{"name":"College of Meteorology and Oceanography, National University of Defense Technology, Nanjing 211101, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hengchi","family":"Lei","sequence":"additional","affiliation":[{"name":"Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,9,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"613","DOI":"10.1623\/hysj.51.4.613","article-title":"Estimation of rainfall elasticity of streamflow in Australia","volume":"51","author":"Chiew","year":"2006","journal-title":"Hydrol. 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