Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-15569-2019 |
Multi-method determination of the below-cloud wet scavenging coefficients of aerosols in Beijing, China | |
Xu, Danhui1,2; Ge, Baozhu1,3; Chen, Xueshun1; Sun, Yele1; Cheng, Nianliang4; Li, Mei5,6; Pan, Xiaole1; Ma, Zhiqiang7; Pan, Yuepeng1; Wang, Zifa1,2,3 | |
2019-12-19 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:24页码:15569-15581 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Wet scavenging is one of the most efficient processes for removing aerosols from the atmosphere. This process is not well constrained in chemical transport models (CTMs) due to a paucity of localized parameterization regarding the below-cloud wet scavenging coefficient (BWSC). Here we conducted field measurements of the BWSC during the Atmospheric Pollution and Human Health Beijing (APHH-Beijing) campaign of 2016. Notably, the observed BWSC values based on the updated aerosol mass balance agree well with another estimation technique, and they fall in a range of 10(-5)s(-1). The measurement in this winter campaign, combined with that in summer of 2014, supported an exponential power distribution of BWSCs with rainfall intensity. The observed parameters were also compared with both the theoretical calculations and modeling results. We found that the theoretical estimations can effectively characterize the observed BWSCs of aerosols with sizes smaller than 0.2 mu m and larger than 2.5 mu m. However, the theoretical estimations were an order of magnitude lower than observed BWSCs within 0.2-2.5 mu m, a domain size range of urban aerosols. Such an underestimation of BWSC through a theoretical method has been confirmed not only in APHH-Beijing campaign but also in all the rainfall events in summer of 2014. Since the model calculations usually originated from the theoretical estimations with simplified scheme, the significantly lower BWSC could well explain the underprediction of wet depositions in polluted regions as reported by the Model Inter-Comparison Study for Asia (MICS-Asia) and the global assessment of the Task Force on Hemispheric Transport of Atmospheric Pollutants (TF-HTAP). The findings highlighted that the wet deposition module in the CTMs requires improvement based on field measurement estimation to construct a more reasonable simulation scheme for BWSC, especially in polluted regions. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000503460000005 |
WOS关键词 | ANTHROPOGENIC POLLUTANTS ; ACID DEPOSITION ; DRY DEPOSITION ; AIR-POLLUTION ; CLIMATE MODEL ; MINERAL DUST ; EAST-ASIA ; PARTICLES ; RAIN ; PRECIPITATION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/224149 |
专题 | 环境与发展全球科技态势 |
作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China; 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Fujian, Peoples R China; 4.Beijing Municipal Environm Monitoring Ctr, Beijing 100048, Peoples R China; 5.Jinan Univ, Inst Mass Spectrometer & Atmospher Environm, Guangzhou 510632, Guangdong, Peoples R China; 6.Guangdong Prov Engn Res Ctr Online Source Apport, Guangzhou 510632, Guangdong, Peoples R China; 7.Beijing Shangdianzi Reg Atmosphere Watch Stn, Beijing 100089, Peoples R China |
推荐引用方式 GB/T 7714 | Xu, Danhui,Ge, Baozhu,Chen, Xueshun,et al. Multi-method determination of the below-cloud wet scavenging coefficients of aerosols in Beijing, China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(24):15569-15581. |
APA | Xu, Danhui.,Ge, Baozhu.,Chen, Xueshun.,Sun, Yele.,Cheng, Nianliang.,...&Wang, Zifa.(2019).Multi-method determination of the below-cloud wet scavenging coefficients of aerosols in Beijing, China.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(24),15569-15581. |
MLA | Xu, Danhui,et al."Multi-method determination of the below-cloud wet scavenging coefficients of aerosols in Beijing, China".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.24(2019):15569-15581. |
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