气候变化领域集成服务门户(CCPortal): Vertical Distributions of Raindrops and Z-R Relationships Using Microrain Radar and 2-D-Video Distrometer Measurements During the Integrative Monsoon Frontal Rainfall Experiment (IMFRE)

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DOI	10.1029/2019JD031108
	Vertical Distributions of Raindrops and Z-R Relationships Using Microrain Radar and 2-D-Video Distrometer Measurements During the Integrative Monsoon Frontal Rainfall Experiment (IMFRE)
	Zhou L.; Dong X.; Fu Z.; Wang B.; Leng L.; Xi B.; Cui C.
发表日期	2020
ISSN	2169897X
卷号	125 期号:3
英文摘要	The vertical characteristics of raindrop size distributions (DSD) and Z-R relationships for monsoon frontal rainfall have been investigated using the co-located two-dimensional video disdrometer and micro rain radar at the Xianning surface site, and the S-band weather radar at the Wuhan radar site during the Integrative Monsoon Frontal Rainfall Experiment (IMFRE). In this study, a total of 1,896 rain samples (1-min resolution) were collected and classified into three categories of convective rain (CR), stratiform rain (SR), and light rain (LR), and their corresponding rain microphysical properties were explored. The LR category is dominated by the evaporation of smaller raindrops and the break-up processes of larger raindrops, resulting in decreasing trends in radar reflectivity and rain rate as the raindrops fall. The SR category undergoes a competition of break-up and coalescence processes, with weak increases in radar reflectivity and rain rate. Whereas, for the CR category, the coalescence process is dominant on the falling path of raindrops, especially below 1 km, leading to sharp increases in radar reflectivity and rain rate. The microrain radar data at height of 200 m is quantitatively compared with the two-dimensional video disdrometer data, and a good agreement is found between them. Further, the number concentrations of raindrops are negatively correlated with the diameters of raindrops and discrepant significantly at different heights among the three rain categories. The height-dependent Z-R relationships found for LR, SR, and CR categories will provide insightful information for improving radar rainfall estimate of monsoon frontal rainfall over central China in the future. ©2020. The Authors.
英文关键词	2-D-video distrometer; drop size distribution; microrain radar; monsoon frontal rainfall; raindrop formation process; Z-R relationship
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186203
作者单位	Hubei Key Laboratory for Heavy Rain Monitoring and Warning Research, Institute of Heavy Rain, China Meteorological Administration, Wuhan, China; Department of Hydrology and Atmospheric Science, University of Arizona, Tucson, AZ, United States
推荐引用方式 GB/T 7714	Zhou L.,Dong X.,Fu Z.,et al. Vertical Distributions of Raindrops and Z-R Relationships Using Microrain Radar and 2-D-Video Distrometer Measurements During the Integrative Monsoon Frontal Rainfall Experiment (IMFRE)[J],2020,125(3).
APA	Zhou L..,Dong X..,Fu Z..,Wang B..,Leng L..,...&Cui C..(2020).Vertical Distributions of Raindrops and Z-R Relationships Using Microrain Radar and 2-D-Video Distrometer Measurements During the Integrative Monsoon Frontal Rainfall Experiment (IMFRE).Journal of Geophysical Research: Atmospheres,125(3).
MLA	Zhou L.,et al."Vertical Distributions of Raindrops and Z-R Relationships Using Microrain Radar and 2-D-Video Distrometer Measurements During the Integrative Monsoon Frontal Rainfall Experiment (IMFRE)".Journal of Geophysical Research: Atmospheres 125.3(2020).