Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD027524 |
Enhancement of PM2.5 Concentrations by Aerosol-Meteorology Interactions Over China | |
Zhang, Xin1; Zhang, Qiang1; Hong, Chaopeng1,2; Zheng, Yixuan1; Geng, Guannan1; Tong, Dan1; Zhang, Yuxuan1; Zhang, Xiaoye3 | |
2018-01-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:2页码:1179-1194 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Aerosol-meteorology interactions can change surface aerosol concentrations via different mechanisms such as altering radiation budget or cloud microphysics. However, few studies investigated the impacts of different mechanisms on temporal and spatial distribution of PM2.5 concentrations over China. Here we used the fully coupled Weather Research and Forecasting model with online chemistry (WRF-Chem) to quantify the enhancement of PM2.5 concentrations by aerosol-meteorology feedback in China in 2014 for different seasons and separate the relative impacts of aerosol radiation interactions (ARIs) and aerosol-cloud interactions (ACIs). We found that ARIs and ACIs could increase population-weighted annual mean PM2.5 concentration over China by 4.0g/m(3) and 1.6g/m(3), respectively. We found that ARIs play a dominant role in aerosol-meteorology interactions in winter, while the enhancement of PM2.5 concentration by ARIs and ACIs is comparable in other three seasons. ARIs reduced the wintertime monthly mean wind speed and planetary boundary layer (PBL) height by up to 0.1m/s and 160m, respectively, but increased the relative humidity by up to 4%, leading to accumulation of pollutants within PBL. Also, ARIs reduced dry deposition velocity of aerosols by up to 20%, resulting in an increase in PM2.5 lifetime and concentrations. ARIs can increase wintertime monthly mean surface PM2.5 concentration by a maximum of 30g/m(3) in Sichuan Basin. ACIs can also increase PM2.5 concentration with more significant impacts in wet seasons via reduced wet scavenging and enhanced in-cloud chemistry. Dominant processes in PM2.5 enhancement are also clarified in different seasons. Results show that physical process is more important than chemical processes in winter in ARIs, while chemical process of secondary inorganic aerosols production may be crucial in wet seasons via ACIs. |
英文关键词 | aerosol PM2 5 aerosol-meteorology interaction china |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425520200032 |
WOS关键词 | WRF-CHEM SIMULATIONS ; BOUNDARY-LAYER ; AIR-POLLUTION ; EAST-ASIA ; ANTHROPOGENIC AEROSOLS ; HAZE EVENT ; MODEL ; WEATHER ; FEEDBACKS ; CLIMATE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/34098 |
专题 | 气候变化 |
作者单位 | 1.Tsinghua Univ, Dept Earth Syst Sci, Key Lab Earth Syst Modeling, Minist Educ, Beijing, Peoples R China; 2.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing, Peoples R China; 3.Chinese Acad Meteorol Sci, Key Lab Atmospher Chem, CMA, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Xin,Zhang, Qiang,Hong, Chaopeng,et al. Enhancement of PM2.5 Concentrations by Aerosol-Meteorology Interactions Over China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(2):1179-1194. |
APA | Zhang, Xin.,Zhang, Qiang.,Hong, Chaopeng.,Zheng, Yixuan.,Geng, Guannan.,...&Zhang, Xiaoye.(2018).Enhancement of PM2.5 Concentrations by Aerosol-Meteorology Interactions Over China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(2),1179-1194. |
MLA | Zhang, Xin,et al."Enhancement of PM2.5 Concentrations by Aerosol-Meteorology Interactions Over China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.2(2018):1179-1194. |
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