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DOI | 10.1073/pnas.1714308114 |
Relationship of tropospheric stability to climate sensitivity and Earth's observed radiation budget | |
Ceppi, Paulo1; Gregory, Jonathan M.2,3 | |
2017-12-12 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:50页码:13126-13131 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | Climate feedbacks generally become smaller in magnitude over time under CO2 forcing in coupled climate models, leading to an increase in the effective climate sensitivity, the estimated global-mean surface warming in steady state for doubled CO2. Here, we show that the evolution of climate feedbacks in models is consistent with the effect of a change in tropospheric stability, as has recently been hypothesized, and the latter is itself driven by the evolution of the pattern of sea-surface temperature response. The change in climate feedback is mainly associated with a decrease in marine tropical low cloud (a more positive shortwave cloud feedback) and with a less negative lapse-rate feedback, as expected from a decrease in stability. Smaller changes in surface albedo and humidity feedbacks also contribute to the overall change in feedback, but are unexplained by stability. The spatial pattern of feedback changes closely matches the pattern of stability changes, with the largest increase in feedback occurring in the tropical East Pacific. Relationships qualitatively similar to those in the models among sea-surface temperature pattern, stability, and radiative budget are also found in observations on interannual time scales. Our results suggest that constraining the future evolution of sea-surface temperature patterns and tropospheric stability will be necessary for constraining climate sensitivity. |
英文关键词 | climate feedbacks climate sensitivity radiative budget clouds climate change |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000417806200047 |
WOS关键词 | SURFACE-TEMPERATURE-CHANGE ; OCEAN HEAT UPTAKE ; LOW-CLOUD COVER ; EVOLVING PATTERNS ; SPATIAL-PATTERN ; ENERGY BUDGET ; FEEDBACK ; DEPENDENCE ; MODEL |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/204836 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Reading, Dept Meteorol, Reading RG6 6BB, Berks, England; 2.Univ Reading, Natl Ctr Atmospher Sci Climate, Reading RG6 6BB, Berks, England; 3.Met Off Hadley Ctr, Exeter EX1 3PB, Devon, England |
推荐引用方式 GB/T 7714 | Ceppi, Paulo,Gregory, Jonathan M.. Relationship of tropospheric stability to climate sensitivity and Earth's observed radiation budget[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(50):13126-13131. |
APA | Ceppi, Paulo,&Gregory, Jonathan M..(2017).Relationship of tropospheric stability to climate sensitivity and Earth's observed radiation budget.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(50),13126-13131. |
MLA | Ceppi, Paulo,et al."Relationship of tropospheric stability to climate sensitivity and Earth's observed radiation budget".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.50(2017):13126-13131. |
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