Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL086204 |
Anthropogenic Aerosols Significantly Reduce Mesoscale Convective System Occurrences and Precipitation Over Southern China in April | |
Zhang, Lijuan1; Fu, Tzung-May2,3; Tian, Heng1; Ma, Yaping1; Chen, Jen-Ping4,5; Tsai, Tzu-Chin4; Tsai, I-Chun6; Meng, Zhiyong1; Yang, Xin2,3 | |
2020-03-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Taiwan |
英文摘要 | Precipitation over Southern China in April, largely associated with mesoscale convective systems (MCSs), has declined significantly in recent decades. It is unclear how this decline in precipitation may be related to the concurrent increase of anthropogenic aerosols over this region. Here, using observation analyses and model simulations, we showed that increased levels of anthropogenic aerosols can significantly reduce MCS occurrences by 21% to 32% over Southern China in April, leading to less rainfall. Half of this MCS occurrence reduction was due to the direct radiative scattering of aerosols and the indirect enhancement of non-MCS liquid cloud reflectance by aerosols, which stabilized the regional atmosphere. The other half of the MCS occurrence reduction was due to the microphysical and dynamical responses of the MCS to aerosols. Our results demonstrated the complex effects of aerosols on MCSs via impacts on both the convective systems and on the regional atmosphere. Plain Language Summary Rainfall over Southern China for the month of April has decreased significantly between the late 1970s and the late 2000s, concurrent with increasing anthropogenic aerosol pollution in this region. Through model simulations, we found that higher levels of aerosols and the resulting increase in liquid cloud reflectance both enhanced the scattering of sunlight, cooled the surface, and stabilized the lower atmosphere. As a result, the occurrences of strong, well-organized convective systems were suppressed, leading to decreased rainfall over Southern China in April. |
英文关键词 | anthropogenic aerosols precipitation mesoscale convective systems aerosol-cloud interactions aerosol-radiation interactions |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000529097700026 |
WOS关键词 | PART I ; CLOUD MICROPHYSICS ; EASTERN CHINA ; RAINFALL ; FREQUENCY ; TRENDS ; POLLUTION ; IMPACTS ; DROUGHT ; SUMMER |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/279834 |
专题 | 气候变化 |
作者单位 | 1.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing, Peoples R China; 2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen, Peoples R China; 3.Southern Univ Sci & Technol, Shenzhen Inst Sustainable Dev, Shenzhen, Peoples R China; 4.Natl Taiwan Univ, Dept Atmospher Sci, Taipei, Taiwan; 5.Natl Taiwan Univ, Int Degree Program Climate Change & Sustainable D, Taipei, Taiwan; 6.Acad Sinica, Res Ctr Environm Changes, Taipei, Taiwan |
推荐引用方式 GB/T 7714 | Zhang, Lijuan,Fu, Tzung-May,Tian, Heng,et al. Anthropogenic Aerosols Significantly Reduce Mesoscale Convective System Occurrences and Precipitation Over Southern China in April[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(6). |
APA | Zhang, Lijuan.,Fu, Tzung-May.,Tian, Heng.,Ma, Yaping.,Chen, Jen-Ping.,...&Yang, Xin.(2020).Anthropogenic Aerosols Significantly Reduce Mesoscale Convective System Occurrences and Precipitation Over Southern China in April.GEOPHYSICAL RESEARCH LETTERS,47(6). |
MLA | Zhang, Lijuan,et al."Anthropogenic Aerosols Significantly Reduce Mesoscale Convective System Occurrences and Precipitation Over Southern China in April".GEOPHYSICAL RESEARCH LETTERS 47.6(2020). |
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