Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD026756 |
Multimodel precipitation responses to removal of US sulfur dioxide emissions | |
Westervelt, D. M.1,2; Conley, A. J.3; Fiore, A. M.1,4; Lamarque, J. -F.3; Shindell, D.5; Previdi, M.1; Faluvegi, G.2,6; Correa, G.1; Horowitz, L. W.7 | |
2017-05-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Emissions of aerosols and their precursors are declining due to policies enacted to protect human health, yet we currently lack a full understanding of the magnitude, spatiotemporal pattern, statistical significance, and physical mechanisms of precipitation responses to aerosol reductions. We quantify the global and regional precipitation responses to U.S. SO2 emission reductions using three fully coupled chemistry-climate models: Community Earth System Model version 1, Geophysical Fluid Dynamics Laboratory Coupled Model 3, and Goddard Institute for Space Studies ModelE2. We contrast 200year (or longer) simulations in which anthropogenic U.S. sulfur dioxide (SO2) emissions are set to zero with present-day control simulations to assess the aerosol, cloud, and precipitation response to U.S. SO2 reductions. In all three models, reductions in aerosol optical depth up to 70% and cloud droplet number column concentration up to 60% occur over the eastern U.S. and extend over the Atlantic Ocean. Precipitation responses occur both locally and remotely, with the models consistently showing an increase in most regions considered. We find a northward shift of the tropical rain belt location of up to 0.35 degrees latitude especially near the Sahel, where the rainy season length and intensity are significantly enhanced in two of the three models. This enhancement is the result of greater warming in the Northern versus Southern Hemispheres, which acts to shift the Intertropical Convergence Zone northward, delivering additional wet season rainfall to the Sahel. Two of our three models thus imply a previously unconsidered benefit of continued U.S. SO2 reductions for Sahel precipitation. |
英文关键词 | aerosol regional climate response model |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000402039000016 |
WOS关键词 | COMMUNITY ATMOSPHERE MODEL ; ANTHROPOGENIC AEROSOLS ; PART I ; CLIMATE ; PARAMETERIZATION ; REPRESENTATION ; INVIGORATION ; SIMULATIONS ; CLOUDS ; MICROPHYSICS |
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/32940 |
专题 | 气候变化 |
作者单位 | 1.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA; 2.NASA, Goddard Inst Space Studies, New York, NY 10025 USA; 3.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 4.Columbia Univ, Dept Earth & Environm Sci, Palisades, NY USA; 5.Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA; 6.Columbia Univ, Ctr Climate Syst Res, New York, NY USA; 7.NOAA, Geophys Fluid Dynam Lab, Princeton, NJ USA |
推荐引用方式 GB/T 7714 | Westervelt, D. M.,Conley, A. J.,Fiore, A. M.,et al. Multimodel precipitation responses to removal of US sulfur dioxide emissions[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(9). |
APA | Westervelt, D. M..,Conley, A. J..,Fiore, A. M..,Lamarque, J. -F..,Shindell, D..,...&Horowitz, L. W..(2017).Multimodel precipitation responses to removal of US sulfur dioxide emissions.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(9). |
MLA | Westervelt, D. M.,et al."Multimodel precipitation responses to removal of US sulfur dioxide emissions".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.9(2017). |
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