IEECAS OpenIR  > 粉尘与环境研究室
The warming Tibetan Plateau improves winter air quality in the Sichuan Basin, China
Zhao, Shuyu1; Feng, Tian2; Tie, Xuexi1,3; Wang, Zebin4
Corresponding AuthorTie, Xuexi(tiexx@ieecas.cn)
2020-12-03
Source PublicationATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
Volume20Issue:23Pages:14873-14887
AbstractImpacts of global climate change on the occurrence and development of air pollution have attracted more attention. This study investigates impacts of the warming Tibetan Plateau on air quality in the Sichuan Basin. Meteorological observations and ERA-Interim reanalysis data reveal that the plateau has been rapidly warming during the last 40 years (1979-2017), particularly in winter when the warming rate is approximately twice as much as the annual warming rate. Since 2013, the winter temperature over the plateau has even risen by 2 degrees C. Here we use the WRF-Chem model to lay emphasis on the impact of the 2 degrees C warming on air quality in the basin. The model results show that the 2 degrees C warming causes an enhanced easterly wind, an increase in the planetary boundary layer height (PBLH) and a decrease in the relative humidity (RH) in the basin. Enhanced easterly wind increases PM2.5 transport from the basin to the plateau. The elevated PBLH strengthens vertical diffusion of PM2.5, while the decreased RH significantly reduces secondary aerosol formation. Overall, PM2.5 concentration is reduced by 17.5 % (similar to 25.1 mu g m(-3)), of which the reduction in primary and secondary aerosols is 5.4 and 19.7 mu g m(-3) respectively. These results reveal that the recent warming plateau has improved air quality in the basin, to a certain extent mitigating the air pollution therein. Nevertheless, the climate system is particularly complicated, and more studies are needed to demonstrate the impact of climate change on air quality in the downstream regions as the plateau is likely to continue warming.
DOI10.5194/acp-20-14873-2020
WOS KeywordORGANIC AEROSOL CONCENTRATIONS ; MEXICO-CITY ; GUANZHONG BASIN ; CLIMATE-CHANGE ; CHEMICAL-COMPOSITION ; EXTREME WEATHER ; RIVER DELTA ; HAZE DAYS ; POLLUTION ; MODEL
Indexed BySCI ; SCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41430424] ; National Natural Science Foundation of China[41730108] ; National Natural Science Foundation of China[41807307] ; West Light Foundation of the Chinese Academy of Sciences[XAB2016B04]
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
Funding OrganizationNational Natural Science Foundation of China ; West Light Foundation of the Chinese Academy of Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
WOS IDWOS:000595239200001
PublisherCOPERNICUS GESELLSCHAFT MBH
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/15625
Collection粉尘与环境研究室
Corresponding AuthorTie, Xuexi
Affiliation1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, SKLLQG, Xian 710061, Peoples R China
2.Ningbo Univ, Dept Geog & Spatial Informat Tech, Ningbo 315211, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Urban Atmospher Environm, Inst Urban Environm, Xiamen 361021, Peoples R China
4.Civil Aviat Adm China, Northwest Air Traff Management Bur, Xian 712000, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Shuyu,Feng, Tian,Tie, Xuexi,et al. The warming Tibetan Plateau improves winter air quality in the Sichuan Basin, China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(23):14873-14887.
APA Zhao, Shuyu,Feng, Tian,Tie, Xuexi,&Wang, Zebin.(2020).The warming Tibetan Plateau improves winter air quality in the Sichuan Basin, China.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(23),14873-14887.
MLA Zhao, Shuyu,et al."The warming Tibetan Plateau improves winter air quality in the Sichuan Basin, China".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.23(2020):14873-14887.
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