TY - JOUR
T1 - Statistical Characteristics of Raindrop Size Distributions and Parameters in Central China During the Meiyu Seasons
AU - Fu, Zhikang
AU - Dong, Xiquan
AU - Zhou, Lingli
AU - Cui, Wenjun
AU - Wang, Jingyu
AU - Wan, Rong
AU - Leng, Liang
AU - Xi, Baike
N1 - Publisher Copyright:
©2020. American Geophysical Union. All Rights Reserved.
PY - 2020/10/16
Y1 - 2020/10/16
N2 - The rain parameters derived from the laser OTT second-generation Particle Size Velocity (Parsivel2), the two-dimensional video disdrometer (2DVD), and DZZ5 tipping-bucket rain gauge (RG) during the Integrative Monsoon Frontal Rainfall Experiment (IMFRE) in summer 2018 are compared. The total rainfall amounts observed by Parsivel, 2DVD, and RG during IMFRE were 178.07, 176.76, and 182.5 mm, while their total rainy hours were 113, 113, and 90. The mean Dm (mass-weighted mean diameter) and LWC (liquid water content) values derived from Parsivel and 2DVD were 1.03 and 1.01 mm and 0.247 and 0.223 g m−3. The rainy samples from six Parsivel sites over the middle reaches of the Yangtze River during the 2016–2018 Meiyu seasons have been collected and analyzed. The occurrence frequencies for rain rates (RR) < 5 and >10 mm hr−1 were 83.9% and 7.4%, respectively, but they contributed 30.5% and 52.1% of the total accumulated rainfall. Compared with the results over the lower reaches of the Yangtze River, the total accumulated rainfall percentages for RR < 5 mm hr−1 and RR > 10 mm hr−1 observed at XN site were higher and lower, respectively. The stratiform rain (SR) raindrop size increases with RR over both the middle and lower reaches, whereas the Nw values over the middle reaches are much higher. Opposite to the SR results, the convective rain (CR) raindrops from this study are larger, while their Nw values are similar to one another. For gamma-type-size distribution, the μ − λ and Z − R relations are strongly dependent on geographical location.
AB - The rain parameters derived from the laser OTT second-generation Particle Size Velocity (Parsivel2), the two-dimensional video disdrometer (2DVD), and DZZ5 tipping-bucket rain gauge (RG) during the Integrative Monsoon Frontal Rainfall Experiment (IMFRE) in summer 2018 are compared. The total rainfall amounts observed by Parsivel, 2DVD, and RG during IMFRE were 178.07, 176.76, and 182.5 mm, while their total rainy hours were 113, 113, and 90. The mean Dm (mass-weighted mean diameter) and LWC (liquid water content) values derived from Parsivel and 2DVD were 1.03 and 1.01 mm and 0.247 and 0.223 g m−3. The rainy samples from six Parsivel sites over the middle reaches of the Yangtze River during the 2016–2018 Meiyu seasons have been collected and analyzed. The occurrence frequencies for rain rates (RR) < 5 and >10 mm hr−1 were 83.9% and 7.4%, respectively, but they contributed 30.5% and 52.1% of the total accumulated rainfall. Compared with the results over the lower reaches of the Yangtze River, the total accumulated rainfall percentages for RR < 5 mm hr−1 and RR > 10 mm hr−1 observed at XN site were higher and lower, respectively. The stratiform rain (SR) raindrop size increases with RR over both the middle and lower reaches, whereas the Nw values over the middle reaches are much higher. Opposite to the SR results, the convective rain (CR) raindrops from this study are larger, while their Nw values are similar to one another. For gamma-type-size distribution, the μ − λ and Z − R relations are strongly dependent on geographical location.
KW - 2DVD
KW - DSD distribution
KW - Meiyu
KW - Parsivel
KW - Z-R relation
KW - middle reaches of Yangtze River
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U2 - 10.1029/2019JD031954
DO - 10.1029/2019JD031954
M3 - Article
AN - SCOPUS:85092588861
SN - 2169-897X
VL - 125
JO - Journal of Geophysical Research Atmospheres
JF - Journal of Geophysical Research Atmospheres
IS - 19
M1 - e2019JD031954
ER -