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Physical-Optical Properties of Marine Aerosols over the South China Sea: Shipboard Measurements and MERRA-2 Reanalysis

文献类型：期刊论文

作者Su, Yueyuan1,2,3; Han, Yong1,2,3; Luo, Hao1,2,3; Zhang, Yuan1,2,3; Shao, Shiyong4; Xie, Xinxin1,2,3
刊名REMOTE SENSING
出版日期2022-05-01
卷号14
关键词physical-optical properties marine aerosols South China Sea
DOI10.3390/rs14102453
通讯作者Han, Yong(hany66@mail.sysu.edu.cn)
英文摘要Aerosols play an important role in the Earth-atmosphere system. Their impacts on the weather and climate are highly dependent on spatiotemporal distributions as well as physical-optical properties. Physical-optical properties of the aerosols over the Asian continent have been widely investigated, but there are relatively few observations in maritime locations, especially the South China Sea (SCS). Here, with the combination of in situ ship-based observations from June and July 2019 as well as long-term MERRA-2 reanalysis datasets from January 2012 to December 2021, the physical and optical properties of marine aerosols in the SCS are explored. The impacts of meteorological factors, particularly frontal systems, on the aerosol properties are further analyzed based on detailed observations. The observed results show that aerosols are vertically concentrated below 3 km and the extinction coefficient reaches the maximum value of 0.055 km(-1) near 480 m. Moreover, the particles are composed of an accumulation and a coarse particle mode, and they conform to the lognormal distribution. The synoptic-scale case study demonstrates that both the cold front and stationary front lead to an increase in aerosol optical thickness (AOD), which is due to the enhanced wind speed and the hygroscopic growth of fine particles, respectively. The long-term analysis indicates that AOD decreases from northwest to southeast with the increasing distance away from the continent, and it reflects higher values in spring and winter than in summer and autumn. Sulfate and sea salt dominate AOD in this region when compared with other components. The overall AOD shows a significant negative trend of -0.0027 year(-)(1). This work will help us further understand the physical and optical properties of marine aerosols over the SCS and then contribute to quantifying the aerosol radiative forcing in the future.
WOS关键词VERTICAL-DISTRIBUTION ; BOUNDARY-LAYER ; ATMOSPHERIC AEROSOLS ; SIZE DISTRIBUTIONS ; SALT EMISSIONS ; VARIABILITY ; TRANSPORT ; DEPTH ; DUST ; PENINSULA
资助项目National Natural Science Foundation of China[42027804] ; National Natural Science Foundation of China[41775026] ; National Natural Science Foundation of China[41075012] ; National Natural Science Foundation of China[40805006]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种英语
出版者MDPI
WOS记录号WOS:000801899500001
资助机构National Natural Science Foundation of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/130991]  
专题中国科学院合肥物质科学研究院
通讯作者Han, Yong
作者单位1.Sun Yat Sen Univ, Sch Atmospher Sci, Adv Sci & Technol Space & Atmospher Phys Grp ASAG, Zhuhai 519082, Peoples R China
2.Southern Marine Sci & Engn Guangdong Lab, Zhuhai 519082, Peoples R China
3.Sun Yat Sen Univ, Minist Educ, Key Lab Trop Atmosphere Ocean Syst, Zhuhai 519082, Peoples R China
4.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Atmospher Opt, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Su, Yueyuan,Han, Yong,Luo, Hao,et al. Physical-Optical Properties of Marine Aerosols over the South China Sea: Shipboard Measurements and MERRA-2 Reanalysis[J]. REMOTE SENSING,2022,14.
APA Su, Yueyuan,Han, Yong,Luo, Hao,Zhang, Yuan,Shao, Shiyong,&Xie, Xinxin.(2022).Physical-Optical Properties of Marine Aerosols over the South China Sea: Shipboard Measurements and MERRA-2 Reanalysis.REMOTE SENSING,14.
MLA Su, Yueyuan,et al."Physical-Optical Properties of Marine Aerosols over the South China Sea: Shipboard Measurements and MERRA-2 Reanalysis".REMOTE SENSING 14(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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