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| 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. | |
| Date Issued | 2021 |
| ISSN | 0169-8095 |
| Volume | 260 |
| Other Abstract | 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. |
| enkeywords | Aerosol cloud interaction; Cloud base drop concentration; Cloud condensation nuclei; Satellite retrieval; Shipboard measurements |
| journal | Atmospheric Research
 |
| Document Type | 期刊论文 |
| Identifier | http://gcip.llas.ac.cn/handle/2XKMVOVA/236682 |
| Affiliation | 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 |
| Recommended Citation 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). |
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