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Impacts of Aerosol-Radiation Interactions on the Wintertime Particulate Pollution under Different Synoptic Patterns in the Guanzhong Basin, China
Bei, Naifang1; Li, Xia2; Wang, Qiyuan2; Liu, Suixin2; Wu, Jiarui2; Liang, Jiayi1; Liu, Lang2; Wang, Ruonan2; Li, Guohui2,3
Corresponding AuthorLi, Guohui(ligh@ieecas.cn)
2021-04-07
Source PublicationADVANCES IN ATMOSPHERIC SCIENCES
ISSN0256-1530
Pages12
AbstractThe effects of aerosol-radiation interactions (ARI) are not only important for regional and global climate, but they can also drive particulate matter (PM) pollution. In this study, the ARI contribution to the near-surface fine PM (PM2.5) concentrations in the Guanzhong Basin (GZB) is evaluated under four unfavorable synoptic patterns, including "north-low", "transition", "southeast-trough", and "inland-high", based on WRF-Chem model simulations of a persistent heavy PM pollution episode in January 2019. Simulations show that ARI consistently decreases both solar radiation reaching down to the surface (SWDOWN) and surface temperature (TSFC), which then reduces wind speed, induces sinking motion, and influences cloud formation in the GZB. However, large differences under the four synoptic patterns still exist. The average reductions of SWDOWN and daytime TSFC in the GZB range from 15.2% and 1.04 degrees C in the case of the "transition" pattern to 26.7% and 1.69 degrees C in the case of the "north-low" pattern, respectively. Furthermore, ARI suppresses the development of the planetary boundary layer (PBL), with the decrease of PBL height (PBLH) varying from 18.7% in the case of the "transition" pattern to 32.0% in the case of the "north-low" pattern. The increase of daytime near-surface PM2.5 in the GZB due to ARI is 12.0%, 8.1%, 9.5%, and 9.7% under the four synoptic patterns, respectively. Ensemble analyses also reveal that when near-surface PM2.5 concentrations are low, ARI tends to lower PM2.5 concentrations with decreased PBLH, which is caused by enhanced divergence or a transition from divergence to convergence in an area. ARI contributes 15%-25% toward the near-surface PM2.5 concentrations during the severe PM pollution period under the four synoptic patterns.
Keywordaerosol-radiation interactions wintertime particulate pollution synoptic patterns Guanzhong Basin
DOI10.1007/s00376-020-0329-7
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Key RD Plan[2017YFC0210000] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40030200] ; National Natural Science Foundation of China[41975175] ; Fundamental Research Funds for the Central Universities of China
WOS Research AreaMeteorology & Atmospheric Sciences
Funding OrganizationNational Key RD Plan ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities of China
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000637462300002
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/16278
Collection粉尘与环境研究室
第四纪科学与全球变化卓越创新中心
Corresponding AuthorLi, Guohui
Affiliation1.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
Recommended Citation
GB/T 7714
Bei, Naifang,Li, Xia,Wang, Qiyuan,et al. Impacts of Aerosol-Radiation Interactions on the Wintertime Particulate Pollution under Different Synoptic Patterns in the Guanzhong Basin, China[J]. ADVANCES IN ATMOSPHERIC SCIENCES,2021:12.
APA Bei, Naifang.,Li, Xia.,Wang, Qiyuan.,Liu, Suixin.,Wu, Jiarui.,...&Li, Guohui.(2021).Impacts of Aerosol-Radiation Interactions on the Wintertime Particulate Pollution under Different Synoptic Patterns in the Guanzhong Basin, China.ADVANCES IN ATMOSPHERIC SCIENCES,12.
MLA Bei, Naifang,et al."Impacts of Aerosol-Radiation Interactions on the Wintertime Particulate Pollution under Different Synoptic Patterns in the Guanzhong Basin, China".ADVANCES IN ATMOSPHERIC SCIENCES (2021):12.
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