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Contribution distinguish between emission reduction and meteorological conditions to "Blue Sky"
Zhang, YM (Zhang, Yangmei)1; Wang, JZ (Wang, Jizhi)1; Yang, YQ (Yang, Yuanqin)1; Li, D (Li, Duo)2,3; Wang, YQ (Wang, Yaqiang)1; Che, HZ (Che, Huizheng)1; Deng, G (Deng, Guo)4
Source PublicationATMOSPHERIC ENVIRONMENT
2018-12-01
Volume190Issue:0Pages:209-217
DOI10.1016/j.atmosenv.2018.07.015
Abstract

Emissions and meteorological conditions are two important factors on aerosol accumulation or dilution. Identifying the contributions of both emission reduction (ER) and meteorological conditions (MC) on aerosol pollution abatement is a hot topic recently. An objective assessment of ER measures' contribution on improving air quality is also of great significance. This study focuses on objective assessment for the air quality improvements (known as "Blue Sky") due to ER measures. A quantitative algorithm on identifying the contribution of ER measures was proposed. The emission-reducing contributions to the "Beijing blue" (August 20 to September 3, 2015, Beijing, International Association of Athletics Federations World Athletics Championships), the "Asia Pacific Economic Cooperation (APEC) blue" (November 10-11, 2014, Beijing, APEC meeting), and the "Games blue" (November 12-27, 2010, Guangzhou, 16th Asian Games) were studied based on pollutant MC of Parameters Linking Air-quality to Meteorological Conditions index. Two individual evaluation algorithms of an average change rate algorithm and a parameter fitting method were developed in this study. Results showed that the special comprehensive emission-reducing measures contributions were up to 26%-30% for "Beijing blue." By analyzing the circulation anomaly during the "Beijing blue" with 30-year average historical atmospheric circulation and the real-time information in 3rd September 2015, we concluded that the "North China Cold Vortex," as unusual stable circulation system stagnation, provides favorable weather conditions for the "Beijing blue." This finding Indicates that approximately 70%-74% of the "Beijing blue" came from long terms of favorable weather conditions. This algorithm for evaluating the contributions of ER and MC was also applied for the "APEC blue" and the "Games blue." The contribution of emission-reducing measures on the "APEC blue" and the "Games blue" accounted for 36% and 25%, respectively. In summary, the favorable MC would contribute 65%-75% to the "Blue Sky" in China and acts as a remarkable role on the improvement of air quality.

Subject Area地理学
WOS IDWOS:000444659400020
Language英语
Indexed BySCIE
KeywordChina Summer Pollution Aerosols Layer
WOS Research AreaEnvironmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS SubjectEnvironmental Sciences ; Meteorology & Atmospheric Sciences
Cooperation Status国内
ISSN1352-2310
Department环境变化与地表过程重点实验室
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8537
Collection图书馆
Corresponding AuthorWang, JZ (Wang, Jizhi)
Affiliation1.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Key Lab Atmospher Chem, China Meteorol Adm, Beijing 100081, Peoples R China;
2.CMA, Natl Climate Ctr, Beijing 100081, Peoples R China;
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China;
4.CMA, Natl Meteorol Ctr, Beijing 100081, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, YM ,Wang, JZ ,Yang, YQ ,et al. Contribution distinguish between emission reduction and meteorological conditions to "Blue Sky"[J]. ATMOSPHERIC ENVIRONMENT,2018,190(0):209-217.
APA Zhang, YM .,Wang, JZ .,Yang, YQ .,Li, D .,Wang, YQ .,...&Deng, G .(2018).Contribution distinguish between emission reduction and meteorological conditions to "Blue Sky".ATMOSPHERIC ENVIRONMENT,190(0),209-217.
MLA Zhang, YM ,et al."Contribution distinguish between emission reduction and meteorological conditions to "Blue Sky"".ATMOSPHERIC ENVIRONMENT 190.0(2018):209-217.
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