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DOI | 10.1038/s41558-018-0272-0 |
Low clouds link equilibrium climate sensitivity to hydrological sensitivity | |
Watanabe, Masahiro1; Kamae, Youichi2,3; Shiogama, Hideo4; DeAngelis, Anthony M.5,6; Suzuki, Kentaroh1 | |
2018-10-01 | |
发表期刊 | NATURE CLIMATE CHANGE
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ISSN | 1758-678X |
EISSN | 1758-6798 |
出版年 | 2018 |
卷号 | 8期号:10页码:901-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; USA |
英文摘要 | Equilibrium climate sensitivity (ECS) and hydrological sensitivity describe the global mean surface temperature and precipitation responses to a doubling of atmospheric CO2. Despite their connection via the Earth's energy budget, the physical linkage between these two metrics remains controversial. Here, using a global climate model with a perturbed mean hydrological cycle, we show that ECS and hydrological sensitivity per unit warming are anti-correlated owing to the low-cloud response to surface warming. When the amount of low clouds decreases, ECS is enhanced through reductions in the reflection of shortwave radiation. In contrast, hydrological sensitivity is suppressed through weakening of atmospheric longwave cooling, necessitating weakened condensational heating by precipitation. These compensating cloud effects are also robustly found in a multimodel ensemble, and further constrained using satellite observations. Our estimates, combined with an existing constraint to clear-sky shortwave absorption, suggest that hydrological sensitivity could be lower by 30% than raw estimates from global climate models. |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000445927700022 |
WOS关键词 | PRECIPITATION CHANGE ; ENERGY BUDGET ; CYCLE ; MODELS ; CONSTRAINTS ; FEEDBACKS ; CIRCULATION ; ATMOSPHERE ; RADIATION ; SPREAD |
WOS类目 | Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/34220 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Tokyo, Atmosphere & Ocean Res Inst, Tokyo, Japan; 2.Univ Tsukuba, Fac Life & Environm Sci, Tsukuba, Ibaraki, Japan; 3.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA; 4.Natl Inst Environm Studies, Ctr Global Environm Res, Tsukuba, Ibaraki, Japan; 5.NASA, Goddard Space Flight Ctr, Global Modeling & Assimilat Off, Greenbelt, MD USA; 6.Sci Syst & Applicat, Lanham, MD USA |
推荐引用方式 GB/T 7714 | Watanabe, Masahiro,Kamae, Youichi,Shiogama, Hideo,et al. Low clouds link equilibrium climate sensitivity to hydrological sensitivity[J]. NATURE CLIMATE CHANGE,2018,8(10):901-+. |
APA | Watanabe, Masahiro,Kamae, Youichi,Shiogama, Hideo,DeAngelis, Anthony M.,&Suzuki, Kentaroh.(2018).Low clouds link equilibrium climate sensitivity to hydrological sensitivity.NATURE CLIMATE CHANGE,8(10),901-+. |
MLA | Watanabe, Masahiro,et al."Low clouds link equilibrium climate sensitivity to hydrological sensitivity".NATURE CLIMATE CHANGE 8.10(2018):901-+. |
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