{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,22]],"date-time":"2025-10-22T18:20:13Z","timestamp":1761157213574,"version":"build-2065373602"},"reference-count":43,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2021,8,23]],"date-time":"2021-08-23T00:00:00Z","timestamp":1629676800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100012166","name":"National Key Research and Development Program of China","doi-asserted-by":"publisher","award":["2018YFC0213201","2017YFC0210002","2018YFC0213104"],"award-info":[{"award-number":["2018YFC0213201","2017YFC0210002","2018YFC0213104"]}],"id":[{"id":"10.13039\/501100012166","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["41722501","51778596","41977184"],"award-info":[{"award-number":["41722501","51778596","41977184"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Anhui Science and Technology Major Project","award":["18030801111"],"award-info":[{"award-number":["18030801111"]}]},{"name":"Strategic Priority Research Program of the Chinese Academy of Sciences","award":["XDA23020301"],"award-info":[{"award-number":["XDA23020301"]}]},{"name":"Major Projects of High Resolution Earth Observation Systems of National Science and Technology","award":["05-Y30B01-9001-19\/20-3"],"award-info":[{"award-number":["05-Y30B01-9001-19\/20-3"]}]},{"name":"Youth Innovation Promotion Association of CAS","award":["2021443"],"award-info":[{"award-number":["2021443"]}]},{"name":"Young Talent Project of the Center for Excellence in Regional Atmospheric Environment","award":["CERAE202004"],"award-info":[{"award-number":["CERAE202004"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The polarization\u2013Raman Lidar combined sun photometer is a powerful method for separating dust and urban haze backscatter, extinction, and mass concentrations. The observation was performed in Beijing during the 2019 National Day parade, the particle depolarization ratio at 532 nm and Lidar ratio at 355 nm are 0.13 \u00b1 0.05 and 52 \u00b1 9 sr, respectively. It is the typical value of a mixture of dust and urban haze. Here we quantify the contributions of cross-regional transported natural dust and urban haze mass concentrations to Beijing\u2019s air quality. There is a significant correlation between urban haze mass concentrations and surface PM2.5 (R = 0.74, p &lt; 0.01). The contributions of local emissions to air pollution during the 2019 National Day parade were insignificant, mainly affected by regional transport, including urban haze in North China plain and Guanzhong Plain (Hebei, Tianjin, Shandong, and Shanxi), and dust aerosol in Mongolia regions and Xinjiang. Moreover, the trans-regional transmission of natural dust dominated the air pollution during the 2019 National Day parade, with a relative contribution to particulate matter mass concentrations exceeding 74% below 4 km. Our results highlight that controlling anthropogenic emissions over regional scales and focusing on the effects of natural dust is crucial and effective to improve Beijing\u2019s air quality.<\/jats:p>","DOI":"10.3390\/rs13163326","type":"journal-article","created":{"date-parts":[[2021,8,23]],"date-time":"2021-08-23T10:24:17Z","timestamp":1629714257000},"page":"3326","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Profiling of Dust and Urban Haze Mass Concentrations during the 2019 National Day Parade in Beijing by Polarization Raman Lidar"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0900-5775","authenticated-orcid":false,"given":"Zhuang","family":"Wang","sequence":"first","affiliation":[{"name":"Key Lab of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China"}]},{"given":"Cheng","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Lab of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China"},{"name":"Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China"},{"name":"Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei 230026, China"},{"name":"Anhui Province Key Laboratory of Polar Environment and Global Change, University of Science and Technology of China, Hefei 230026, China"}]},{"given":"Yunsheng","family":"Dong","sequence":"additional","affiliation":[{"name":"Key Lab of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"}]},{"given":"Qihou","family":"Hu","sequence":"additional","affiliation":[{"name":"Key Lab of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"}]},{"given":"Ting","family":"Liu","sequence":"additional","affiliation":[{"name":"Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China"}]},{"given":"Yizhi","family":"Zhu","sequence":"additional","affiliation":[{"name":"Key Lab of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"},{"name":"Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei 230026, China"}]},{"given":"Chengzhi","family":"Xing","sequence":"additional","affiliation":[{"name":"Key Lab of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China"}]}],"member":"1968","published-online":{"date-parts":[[2021,8,23]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"100","DOI":"10.1038\/s41377-019-0210-6","article-title":"Satellite UV-Vis spectroscopy: Implications for air quality trends and their driving forces in China during 2005\u20132017","volume":"8","author":"Zhang","year":"2019","journal-title":"Light. 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