Raindrop size distribution parameters estimated from polarimetric radar variables in convective cells around Okinawa Island during the Baiu period

2010 ◽  
Vol 47 (1) ◽  
pp. 33-44 ◽  
Author(s):  
Mariko Oue ◽  
Hiroshi Uyeda ◽  
Dong-In Lee
Keyword(s):  
Size Distribution ◽  
Polarimetric Radar ◽  
Okinawa Island ◽  
Raindrop Size Distribution ◽  
Distribution Parameters ◽  
Raindrop Size ◽  
Convective Cells

scholarly journals Estimation of Raindrop Size Distribution Parameters from Polarimetric Radar Measurements

2002 ◽  
Vol 59 (15) ◽  
pp. 2373-2384 ◽  
Author(s):  
Eugenio Gorgucci ◽  
V. Chandrasekar ◽  
V. N. Bringi ◽  
Gianfranco Scarchilli
Keyword(s):  
Size Distribution ◽  
Polarimetric Radar ◽  
Raindrop Size Distribution ◽  
Distribution Parameters ◽  
Radar Measurements ◽  
Raindrop Size

scholarly journals Raindrop Size Distribution Parameters Retrieved from Guangzhou S-band Polarimetric Radar Observations

2018 ◽  
Vol 32 (4) ◽  
pp. 571-583 ◽  
Author(s):  
Xiantong Liu ◽  
Qilin Wan ◽  
Hong Wang ◽  
Hui Xiao ◽  
Yu Zhang ◽  
...  
Keyword(s):  
Size Distribution ◽  
Polarimetric Radar ◽  
Radar Observations ◽  
Raindrop Size Distribution ◽  
Distribution Parameters ◽  
Raindrop Size

scholarly journals STUDY ON SUMMER RAINDROP SIZE DISTRIBUTION AND RETRIEVED POLARIMETRIC RADAR PARAMETER OVER LEIZHOU PENINSULA

2019 ◽  
Vol XLII-3/W9 ◽  
pp. 245-250
Author(s):  
Z. B. Zhou ◽  
J. J. Lv ◽  
S. J. Niu
Keyword(s):  
Size Distribution ◽  
Gamma Distribution ◽  
Least Squares Method ◽  
Convective Precipitation ◽  
Polarimetric Radar ◽  
Leizhou Peninsula ◽  
Raindrop Size Distribution ◽  
Precipitation Estimation ◽  
Raindrop Size ◽  
Subtropical Monsoon Climate

Abstract. Leizhou peninsula is located in the south of Guangdong Province, near South China Sea, and has a tropical and subtropical monsoon climate. Based on observed drop size distribution (DSD) data from July 2007 to August 2007 with PARSIVEL disdrometers deployed at Zhanjiang and Suixi, the characterists of DSDs are studied. Non-linear least squares method is used to fit Gamma distribution. Convective and stratiform averaged DSDs are in good agreement with Gamma distribution, especially in stratiform case. Convective average DSDs have a wider spectrum and higher peak. Microphysical parameter differences between convective and stratiform are discussed, convective precipitation has a higher mass-weighted mean diameter (Dm) and generalized intercepts (Nw) in both areas. The constrained relations between Gamma distribution parameter (μ, Λ, N0) is derived. The retrieved polarimetric radar parameter (KDP, ZDR, Zh) have a good self-consistency, which can be used to improve the accuracy of KDP calculation. R-KDP-ZDR is superior to the R-KDP, R-ZDR-Zh in quantitative precipitation estimation (QPE), with a correlation coefficient higher than 0.98.

scholarly journals Retrieval of the raindrop size distribution from polarimetric radar data using double-moment normalisation

2016 ◽  
Author(s):  
Timothy H. Raupach ◽  
Alexis Berne
Keyword(s):  
Size Distribution ◽  
Radar Data ◽  
Polarimetric Radar ◽  
Climatic Regions ◽  
Retrieval Technique ◽  
Raindrop Size Distribution ◽  
X Band ◽  
Double Moment ◽  
Raindrop Size ◽  
A New Technique

Abstract. A new technique for estimating the raindrop size distribution (DSD) from polarimetric radar data is proposed. Two statistical moments of the DSD are estimated from polarimetric variables, and the DSD is reconstructed. The technique takes advantage of the relative invariance of the double-moment normalised DSD. The method was tested using X-band radar data and networks of disdrometers in three different climatic regions. Radar-derived estimates of the DSD compare reasonably well to observations. In the three tested domains, the proposed method performs similarly to and often better than a state-of-the-art DSD-retrieval technique. The approach is flexible because no specific double-normalised DSD model is prescribed. In addition, a method is proposed to treat noisy radar data to improve DSD-retrieval performance with radar measurements.

Optimized raindrop size distribution retrieval and quantitative rainfall estimation from polarimetric radar

2020 ◽  
Vol 580 ◽  
pp. 124248 ◽  
Author(s):  
Hao Huang ◽  
Kun Zhao ◽  
Guifu Zhang ◽  
Dongming Hu ◽  
Zhengwei Yang
Keyword(s):  
Size Distribution ◽  
Polarimetric Radar ◽  
Rainfall Estimation ◽  
Raindrop Size Distribution ◽  
Raindrop Size
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