{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,17]],"date-time":"2026-01-17T08:52:21Z","timestamp":1768639941768,"version":"3.49.0"},"reference-count":59,"publisher":"MDPI AG","issue":"20","license":[{"start":{"date-parts":[[2019,10,16]],"date-time":"2019-10-16T00:00:00Z","timestamp":1571184000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Strategic Priority Research Program of Chinese Academy of Sciences","award":["XDA17010104"],"award-info":[{"award-number":["XDA17010104"]}]},{"name":"National Key Technology Support Program of China","award":["2017YFC0209801"],"award-info":[{"award-number":["2017YFC0209801"]}]},{"DOI":"10.13039\/501100001809","name":"Natural Science Foundation of China","doi-asserted-by":"publisher","award":["41875041"],"award-info":[{"award-number":["41875041"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Above-low-level-cloud aerosols (ACAs) have gradually gained more interest in recent years; however, the combined aerosol\u2013cloud radiation effects are not well understood. The uncertainty about the radiative effects of aerosols above cloud mainly stems from the lack of comprehensive and accurate retrieval of aerosols and clouds for ACA scenes. In this study, an improved ACA identification and retrieval methodology was developed to provide a new global view of the ACA distribution by combining three-channel CALIOP (The Cloud\u2013Aerosol Lidar with Orthogonal Polarization) observations. The new method can reliably identify and retrieve both thin and dense ACA layers, providing consistent results between the day- and night-time retrieval of ACAs. Then, new four-year (2007 to 2010) global ACA datasets were built, and new seasonal mean views of global ACA occurrence, optical depth, and geometrical thickness were presented and analyzed. Further discussion on the relative position of ACAs to low clouds showed that the mean distance between the ACA layer and the low cloud deck over the tropical Atlantic region is less than 0.2 km. This indicates that the ACAs over this region are more likely to be mixed with low-level clouds, thereby possibly influencing the cloud microphysics over this region, contrary to findings reported from previous studies. The results not only help us better understand global aerosol transportation and aerosol\u2013cloud interactions but also provide useful information for model evaluation and improvements.<\/jats:p>","DOI":"10.3390\/rs11202396","type":"journal-article","created":{"date-parts":[[2019,10,17]],"date-time":"2019-10-17T04:46:06Z","timestamp":1571287566000},"page":"2396","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["New Global View of Above-Cloud Absorbing Aerosol Distribution Based on CALIPSO Measurements"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0726-2279","authenticated-orcid":false,"given":"Wenzhong","family":"Zhang","sequence":"first","affiliation":[{"name":"Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shumei","family":"Deng","sequence":"additional","affiliation":[{"name":"School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9959-2453","authenticated-orcid":false,"given":"Tao","family":"Luo","sequence":"additional","affiliation":[{"name":"Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yang","family":"Wu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"School of Environment Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nana","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"School of Environment Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xuebin","family":"Li","sequence":"additional","affiliation":[{"name":"Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yinbo","family":"Huang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wenyue","family":"Zhu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2019,10,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"447","DOI":"10.1038\/384447a0","article-title":"Possible role of dust-induced regional warming in abrupt climate change during the last glacial period","volume":"384","author":"Overpeck","year":"1996","journal-title":"Nature"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"419","DOI":"10.1038\/380419a0","article-title":"The influence on climate forcing of mineral aerosols from disturbed soils","volume":"380","author":"Tegen","year":"1996","journal-title":"Nature"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"367","DOI":"10.1038\/26456","article-title":"Quantification of dust-forced heating of the lower troposphere","volume":"395","author":"Alpert","year":"1998","journal-title":"Nature"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"1815","DOI":"10.5194\/acp-6-1815-2006","article-title":"An AeroCom initial assessment\u2014Optical properties in aerosol component modules of global models","volume":"6","author":"Kinne","year":"2006","journal-title":"Atmos. 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