气候变化领域集成服务门户(CCPortal): Profiles of MBL Cloud and Drizzle Microphysical Properties Retrieved From Ground-Based Observations and Validated by Aircraft In Situ Measurements Over the Azores

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DOI	10.1029/2019JD032205
	Profiles of MBL Cloud and Drizzle Microphysical Properties Retrieved From Ground-Based Observations and Validated by Aircraft In Situ Measurements Over the Azores
	Wu P.; Dong X.; Xi B.; Tian J.; Ward D.M.
发表日期	2020
ISSN	2169897X
卷号	125 期号:9
英文摘要	The profiles of marine boundary layer (MBL) cloud and drizzle microphysical properties are important for studying the cloud-to-rain conversion and growth processes in MBL clouds. However, it is challenging to simultaneously retrieve both cloud and drizzle microphysical properties within an MBL cloud layer using ground-based observations. In this study, methods were developed to first decompose drizzle and cloud reflectivity in MBL clouds from Atmospheric Radiation Measurement cloud radar reflectivity measurements and then simultaneously retrieve cloud and drizzle microphysical properties during the Aerosol and Cloud Experiments in the Eastern North Atlantic (ACE-ENA) campaign. These retrieved microphysical properties, such as cloud and drizzle particle size (rc and rm,d), their number concentration (Nc and Nd) and liquid water content (LWCc and LWCd), have been validated by aircraft in situ measurements during ACE-ENA (~158 hr of aircraft data). The mean surface retrieved (in situ measured) rc, Nc, and LWCc are 10.9 μm (11.8 μm), 70 cm−3 (60 cm−3), and 0.21 g m−3 (0.22 g m−3), respectively. For drizzle microphysical properties, the retrieved (in situ measured) rd, Nd, and LWCd are 44.9 μm (45.1 μm), 0.07 cm−3 (0.08 cm−3), and 0.052 g m−3 (0.066 g m−3), respectively. Treating the aircraft in situ measurements as truth, the estimated median retrieval errors are ~15% for rc, ~35% for Nc, ~30% for LWCc and rd, and ~50% for Nd and LWCd. The findings from this study will provide insightful information for improving our understanding of warm rain processes, as well as for improving model simulations. More studies are required over other climatic regions. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	aircraft measurements; cloud and precipitation; ground-based observations; microphysics retrieval
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/186015
作者单位	Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ, United States; Now at Lawrence Livermore National Laboratory, Livermore, CA, United States
推荐引用方式 GB/T 7714	Wu P.,Dong X.,Xi B.,et al. Profiles of MBL Cloud and Drizzle Microphysical Properties Retrieved From Ground-Based Observations and Validated by Aircraft In Situ Measurements Over the Azores[J],2020,125(9).
APA	Wu P.,Dong X.,Xi B.,Tian J.,&Ward D.M..(2020).Profiles of MBL Cloud and Drizzle Microphysical Properties Retrieved From Ground-Based Observations and Validated by Aircraft In Situ Measurements Over the Azores.Journal of Geophysical Research: Atmospheres,125(9).
MLA	Wu P.,et al."Profiles of MBL Cloud and Drizzle Microphysical Properties Retrieved From Ground-Based Observations and Validated by Aircraft In Situ Measurements Over the Azores".Journal of Geophysical Research: Atmospheres 125.9(2020).