气候变化领域集成服务门户(CCPortal): Validation of satellite-retrieved CCN based on a cruise campaign over the polluted Northwestern Pacific ocean

CCPortal

DOI	10.1016/j.atmosres.2021.105722
	Validation of satellite-retrieved CCN based on a cruise campaign over the polluted Northwestern Pacific ocean
	Wang Y.; Zhu Y.; Wang M.; Rosenfeld D.; Gao Y.; Yao X.; Sheng L.; Efraim A.; Wang J.
发表日期	2021
ISSN	0169-8095
卷号	260
英文摘要	In this study, we present and validate a methodology for satellite retrievals of cloud condensation nuclei (CCN) in shallow marine boundary layer clouds. In our approach, supersaturation (S) is calculated by the retrieved cloud base drop concentration (Nd) and updrafts (Wb). Nd is the activated CCN concentration in clouds at a given S. We validate the accuracy of the satellite retrieval against surface-measured CCNs from a cruise campaign over the heavily polluted northwest Pacific Ocean. The satellite retrievals show a good agreement with surface measurements after performing corrections for temperature and adiabatic fraction when clouds are coupled with sea surface. This study broadens the applicability of the methodology from aerosol-limited to contaminated regions. The validation shows ±30% accuracy in retrieving CCN over both clean and polluted regions. The results further demonstrate the strong dependence of marine shallow cloud Nd on CCN number concentrations and updraft, which allows us to further apply this methodology to quantify CCN, cloud microphysical properties and the relationships between them. This is helpful in reducing the uncertainty of radiation forcing caused by the aerosol-cloud-interactions (ACI). © 2021 Elsevier B.V.
英文关键词	Aerosol cloud interaction; Cloud base drop concentration; Cloud condensation nuclei; Satellite retrieval; Shipboard measurements
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236682
作者单位	School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China; Joint International Research Laboratory of Atmospheric and Earth System Sciences, Institute for Climate and Global Change Research, Nanjing University, China; Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem, 91904, Israel; Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, China; Department of Marine Meteorology, College of Oceanic and Atmospheric Sciences, Ocean University of China, Qingdao, 266100, China; Ocean-Atmosphere Interaction and Climate Laboratory, Key Laboratory of Physical Oceanography, Ocean University of China, Qingdao, 266100, China
推荐引用方式 GB/T 7714	Wang Y.,Zhu Y.,Wang M.,et al. Validation of satellite-retrieved CCN based on a cruise campaign over the polluted Northwestern Pacific ocean[J],2021,260.
APA	Wang Y..,Zhu Y..,Wang M..,Rosenfeld D..,Gao Y..,...&Wang J..(2021).Validation of satellite-retrieved CCN based on a cruise campaign over the polluted Northwestern Pacific ocean.Atmospheric Research,260.
MLA	Wang Y.,et al."Validation of satellite-retrieved CCN based on a cruise campaign over the polluted Northwestern Pacific ocean".Atmospheric Research 260(2021).