globalchange  > 气候减缓与适应
DOI: 10.1029/2018JD028821
Scopus记录号: 2-s2.0-85052228150
论文题名:
Larger Sensitivity of Precipitation Extremes to Aerosol Than Greenhouse Gas Forcing in CMIP5 Models
作者: Lin L.; Wang Z.; Xu Y.; Fu Q.; Dong W.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:15
起始页码: 8062
结束页码: 8073
语种: 英语
英文关键词: aerosols ; CMIP5 ; greenhouse gases ; precipitation extremes
英文摘要: The sensitivity of precipitation extremes (PEs; i.e., the change in PE per degree of change in global mean surface temperature) to aerosol and greenhouse gas (GHG) forcings is examined using the twentieth century historical multimodel ensemble simulations from the Coupled Model Intercomparison Program phase 5 (CMIP5). We find a robustly larger sensitivity of PE to aerosols than GHGs across all available models. The aerosol/GHG-induced sensitivity ratios for globe-averaged monthly maximum consecutive 5-day precipitation (RX5day) and maximum 1-day precipitation (RX1day) in the multimodel ensemble are 1.6 and 1.4, respectively. Over land, the corresponding ratios for RX5day and RX1day are 2.3 and 1.8, respectively. In particular, the aerosol forcing leads to several times greater sensitivity than GHG forcing in West Africa, eastern China, South and Southeast Asia, northwestern South America, and Eastern Europe. The atmospheric energy balance, dynamical adjustment, and vertical structure of forcing, all contribute to the difference in the PE sensitivity to the two forcings. It is shown that the fast response primarily contributes to the greater-than-one aerosol-to-GHG ratios of the PE sensitivities, as for the mean precipitation. This is because of a stronger rainfall suppression effect induced by the GHG atmospheric forcing. We also find that the aerosol-to-GHG ratios of the PE sensitivities depend on the defined extreme precipitation indices. The aerosol-to-GHG sensitivity ratio is larger for more loosely defined PE, and it gradually converges to one for more severely defined PE. Our results further highlight the importance of considering the anthropogenic aerosol reduction in projecting the change in PE. ©2018. American Geophysical Union. All Rights Reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113263
Appears in Collections:气候减缓与适应

Files in This Item:

There are no files associated with this item.


作者单位: School of Atmospheric Sciences and Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Zhuhai, China; State Key Laboratory of Severe Weather and Key Laboratory of Atmospheric Chemistry of CMA, Chinese Academy of Meteorological Sciences, Beijing, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, China; Department of Atmospheric Sciences, Texas A&M University, College Station, TX, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States

Recommended Citation:
Lin L.,Wang Z.,Xu Y.,et al. Larger Sensitivity of Precipitation Extremes to Aerosol Than Greenhouse Gas Forcing in CMIP5 Models[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(15)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Lin L.]'s Articles
[Wang Z.]'s Articles
[Xu Y.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Lin L.]'s Articles
[Wang Z.]'s Articles
[Xu Y.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Lin L.]‘s Articles
[Wang Z.]‘s Articles
[Xu Y.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.