Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031414 |
Near-Future Anthropogenic Aerosol Emission Scenarios and Their Direct Radiative Effects on the Present-Day Characteristics of the Indian Summer Monsoon | |
Das, Sushant1; Giorgi, Filippo1; Giuliani, Graziano1; Dey, Sagnik2,3; Coppola, Erika1 | |
2020-02-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | Italy; India |
英文摘要 | Various air pollution mitigation scenarios have been proposed to improve the existing severe air quality problem over South Asia. Here we use a regional climate model to examine the response of the Indian summer monsoon (ISM) to two projected anthropogenic aerosol emission scenarios (a) short-lived climate pollutant "mitigation" scenario (2020-2030) and (b) current legislation "baseline" scenario (2005-2015). In the mitigation scenario, carbonaceous aerosol (black carbon and organic carbon) emissions are projected to decrease while sulfate emissions are projected to increase. This is expected to result in a marginal increase in anthropogenic aerosol optical depth over India (by 0.04-0.08). The dominating effect of scattering aerosols over absorbing aerosols in the mitigation scenario is expected to enhance atmospheric cooling over the Indian landmass, which in turn dampens the latitudinal thermal gradient and leads to a weakening of the ISM. This effect also reduces dust emissions over the Arabian Peninsula and transport across the Arabian Sea, decreasing the influence of the dust radiative feedback on the ISM. In addition, the increased amounts of sulfate and decreased amounts of carbonaceous aerosols are expected to result in drier conditions over the central parts of India. We also show that changes in emissions of different types of anthropogenic aerosols induce a chain of feedbacks, which can modulate the space-time variability of dust, thereby affecting the magnitude of dust radiative effects on the ISM dynamics. We conclude that it is critical from the policy point of view to implement strategies to cut the currently increasing sulfate emissions. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000519227000026 |
WOS关键词 | BLACK CARBON AEROSOLS ; REGIONAL CLIMATE ; OPTICAL DEPTH ; EAST-ASIA ; MODEL ; DUST ; SIMULATION ; RAINFALL ; CLOUD ; POLLUTION |
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/280067 |
专题 | 气候变化 |
作者单位 | 1.Abdus Salam Int Ctr Theoret Phys, Earth Syst Phys Sect, Trieste, Italy; 2.Indian Inst Technol Delhi, Ctr Atmospher Sci, New Delhi, India; 3.Indian Inst Technol Delhi, Ctr Excellence Res Clean Air, New Delhi, India |
推荐引用方式 GB/T 7714 | Das, Sushant,Giorgi, Filippo,Giuliani, Graziano,et al. Near-Future Anthropogenic Aerosol Emission Scenarios and Their Direct Radiative Effects on the Present-Day Characteristics of the Indian Summer Monsoon[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(4). |
APA | Das, Sushant,Giorgi, Filippo,Giuliani, Graziano,Dey, Sagnik,&Coppola, Erika.(2020).Near-Future Anthropogenic Aerosol Emission Scenarios and Their Direct Radiative Effects on the Present-Day Characteristics of the Indian Summer Monsoon.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(4). |
MLA | Das, Sushant,et al."Near-Future Anthropogenic Aerosol Emission Scenarios and Their Direct Radiative Effects on the Present-Day Characteristics of the Indian Summer Monsoon".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.4(2020). |
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