气候变化领域集成服务门户(CCPortal): Comparative Study of Cloud Liquid Water and Rain Liquid Water Obtained From Microwave Radiometer and Micro Rain Radar Observations Over Central China During the Monsoon

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DOI	10.1029/2020JD032456
	Comparative Study of Cloud Liquid Water and Rain Liquid Water Obtained From Microwave Radiometer and Micro Rain Radar Observations Over Central China During the Monsoon
	Zhang W.; Xu G.; Xi B.; Ren J.; Wan X.; Zhou L.; Cui C.; Wu D.
发表日期	2020
ISSN	2169897X
卷号	125 期号:20
英文摘要	We investigated the cloud liquid water (CLW) and rain liquid water (RLW) during weak precipitations (rain rate below 12 mm/h) using microwave radiometer and microrain radar measurements collected by the Integrative Monsoon Frontal Rainfall Experiment over central China in 2018. The CLW path increased sharply from 0.6 to 4.1 mm for precipitation clouds. RLW path presented a similar trend, although it had a larger correlation coefficient with rain rate. Precipitation efficiency reached up to ~50% and then clearly decreased as precipitation weakened. Because weak precipitation is mostly formed in stable nimbostratus, CLW content (CLWC) during precipitation tends to has a quasi-normal distribution with mode at 0.38 g/m3, whereas RLW content (RLWC) shows a positively skewed distribution with mode at 0.06 g/m3. Normalized CLWC initially increases then decreases with height in nonprecipitation clouds but varies slightly in precipitation clouds due to relatively monodispersed droplets in the weaker convective motion. CLWC derived from millimeter-wave cloud radar (MMCR) shows similar vertical distribution but with larger values. The mean normalized CLWCs are 0.06 and 0.38 g/m3 for nonprecipitation and precipitation clouds, respectively. RLWC varies slightly with height with a mean of 0.22 g/m3 because both the collision and breakup of raindrops are weak. A case study showed different distributions and vertical structures of CLWC and RLWC in various stages of precipitation. Thicker clouds result in larger CLWC and RLWC, which will cause greater rain rate. This qualitatively explains relationships among cloud thickness, CLW, RLW, and rain rate in precipitation during the monsoon. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	cloud liquid water; distribution properties; monsoon; rain liquid water
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/185696
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 Sciences, University of Arizona, Tucson, AZ, United States; Xianning Meteorological Bureau of Hubei Province, Xianning, China
推荐引用方式 GB/T 7714	Zhang W.,Xu G.,Xi B.,et al. Comparative Study of Cloud Liquid Water and Rain Liquid Water Obtained From Microwave Radiometer and Micro Rain Radar Observations Over Central China During the Monsoon[J],2020,125(20).
APA	Zhang W..,Xu G..,Xi B..,Ren J..,Wan X..,...&Wu D..(2020).Comparative Study of Cloud Liquid Water and Rain Liquid Water Obtained From Microwave Radiometer and Micro Rain Radar Observations Over Central China During the Monsoon.Journal of Geophysical Research: Atmospheres,125(20).
MLA	Zhang W.,et al."Comparative Study of Cloud Liquid Water and Rain Liquid Water Obtained From Microwave Radiometer and Micro Rain Radar Observations Over Central China During the Monsoon".Journal of Geophysical Research: Atmospheres 125.20(2020).