globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-015-2577-2
Scopus记录号: 2-s2.0-84955681259
论文题名:
Is there a stratospheric radiative feedback in global warming simulations?
作者: Huang Y.; Zhang M.; Xia Y.; Hu Y.; Son S.-W.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 46, 期:2017-01-02
起始页码: 177
结束页码: 186
语种: 英语
英文关键词: CMIP5 ; Radiative feedback ; Stratosphere
英文摘要: The radiative impacts of the stratosphere in global warming simulations are investigated using abrupt CO2 quadrupling experiments of the Coupled Model Inter-comparison Project phase 5 (CMIP5), with a focus on stratospheric temperature and water vapor. It is found that the stratospheric temperature change has a robust bullhorn-like zonal-mean pattern due to a strengthening of the stratospheric overturning circulation. This temperature change modifies the zonal mean top-of-the-atmosphere energy balance, but the compensation of the regional effects leads to an insignificant global-mean radiative feedback (−0.02 ± 0.04 W m−2 K−1). The stratospheric water vapor concentration generally increases, which leads to a weak positive global-mean radiative feedback (0.02 ± 0.01 W m−2 K−1). The stratospheric moistening is related to mixing of elevated upper-tropospheric humidity, and, to a lesser extent, to change in tropical tropopause temperature. Our results indicate that the strength of the stratospheric water vapor feedback is noticeably larger in high-top models than in low-top ones. The results here indicate that although its radiative impact as a forcing adjustment is significant, the stratosphere makes a minor contribution to the overall climate feedback in CMIP5 models. © 2015, Springer-Verlag Berlin Heidelberg.
资助项目: MOE, Natural Sciences and Engineering Research Council of Canada ; NSFC, Natural Sciences and Engineering Research Council of Canada ; NSERC, Natural Sciences and Engineering Research Council of Canada
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53882
Appears in Collections:过去全球变化的重建

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作者单位: Department of Atmospheric and Oceanic Sciences, McGill University, 805 Sherbrooke Street West, Montreal, QC, Canada; Department of Atmospheric and Oceanic Sciences, Peking University, Beijing, China; School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea

Recommended Citation:
Huang Y.,Zhang M.,Xia Y.,et al. Is there a stratospheric radiative feedback in global warming simulations?[J]. Climate Dynamics,2016-01-01,46(2017-01-02)
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