{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,14]],"date-time":"2026-01-14T19:11:40Z","timestamp":1768417900743,"version":"3.49.0"},"reference-count":63,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2023,3,2]],"date-time":"2023-03-02T00:00:00Z","timestamp":1677715200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["42027804"],"award-info":[{"award-number":["42027804"]}]},{"name":"National Natural Science Foundation of China","award":["41775026"],"award-info":[{"award-number":["41775026"]}]},{"name":"National Natural Science Foundation of China","award":["41075012"],"award-info":[{"award-number":["41075012"]}]},{"name":"National Natural Science Foundation of China","award":["40805006"],"award-info":[{"award-number":["40805006"]}]},{"name":"National Natural Science Foundation of China","award":["42271093"],"award-info":[{"award-number":["42271093"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The spatiotemporal distributions and physical\u2013optical properties of aerosols are of great scientific significance for the study of climate change and atmospheric environment. What are the characteristics of aerosols in constant high humidity? Continuous wet weather (CWW) is a special weather phenomenon that occurs frequently during the late winter and early spring in South China. In this study, the CALIPSO satellite data and the ERA5 and MERRA-2 reanalysis data are used to analyze the aerosol optical properties of a total of 68 CWW processes from 2012 to 2021 in the Guangdong\u2013Hong Kong\u2013Macau Greater Bay Area (GBA). We attempt to explore the variations in meteorological conditions and physical\u2013optical properties of aerosols during the before-stage, wet-stage, and after-stage under different humidity levels. The results show that the prevailing wind direction is northeasterly and that the temperature and humidity are lower under the influence of cold high pressure in the before-stage. Moreover, the high aerosol optical depth (AOD) mainly results from regional transport. During the wet-stage, clean ocean airflow causes AOD to remain at a low level, whereas temperature and humidity increase significantly. The wet-stage ends with coldness when it is controlled by cold high pressure again. The atmospheric circulation in the after-stage is similar to that in the before-stage. However, a remarkable feature is that there is a temperature and humidity inversion layer, which results in a significant increase in AOD. This study reveals the physical\u2013optical properties of aerosols during the three stages and the influence mechanism of meteorological factors on aerosols, which can provide a scientific basis for the study of CWW in the future.<\/jats:p>","DOI":"10.3390\/rs15051413","type":"journal-article","created":{"date-parts":[[2023,3,3]],"date-time":"2023-03-03T01:43:00Z","timestamp":1677807780000},"page":"1413","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Aerosol Physical\u2013Optical Properties under Different Stages of Continuous Wet Weather over the Guangdong\u2013Hong Kong\u2013Macao Greater Bay Area, China"],"prefix":"10.3390","volume":"15","author":[{"given":"Yuefeng","family":"Zhao","sequence":"first","affiliation":[{"name":"Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China"}]},{"given":"Jinxin","family":"Ding","sequence":"additional","affiliation":[{"name":"Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China"},{"name":"Advanced Science & Technology of Space and Atmospheric Physics Group (ASAG), School of Atmospheric Sciences, Sun Yat-Sen University & Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519082, China"}]},{"given":"Yong","family":"Han","sequence":"additional","affiliation":[{"name":"Advanced Science & Technology of Space and Atmospheric Physics Group (ASAG), School of Atmospheric Sciences, Sun Yat-Sen University & Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519082, China"},{"name":"Key Laboratory of Tropical Atmosphere-Ocean System, Sun Yat-Sen University, Ministry of Education, Zhuhai 519082, China"}]},{"given":"Tianwei","family":"Lu","sequence":"additional","affiliation":[{"name":"Advanced Science & Technology of Space and Atmospheric Physics Group (ASAG), School of Atmospheric Sciences, Sun Yat-Sen University & Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519082, China"}]},{"given":"Yurong","family":"Zhang","sequence":"additional","affiliation":[{"name":"Advanced Science & Technology of Space and Atmospheric Physics Group (ASAG), School of Atmospheric Sciences, Sun Yat-Sen University & Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519082, China"}]},{"given":"Hao","family":"Luo","sequence":"additional","affiliation":[{"name":"Advanced Science & Technology of Space and Atmospheric Physics Group (ASAG), School of Atmospheric Sciences, Sun Yat-Sen University & Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai 519082, China"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"216","DOI":"10.1016\/j.atmosres.2014.02.011","article-title":"Observation of aerosol optical properties and particulate pollution at background station in the Pearl River Delta region","volume":"143","author":"Chen","year":"2014","journal-title":"Atmos. 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