globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-016-3040-8
Scopus记录号: 2-s2.0-84959161227
论文题名:
Towards a physical understanding of stratospheric cooling under global warming through a process-based decomposition method
作者: Yang Y.; Ren R.-C.; Cai M.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2016
卷: 47, 期:12
起始页码: 3767
结束页码: 3782
语种: 英语
英文关键词: CFRAM ; Global warming ; Processes-based decomposition ; Stratospheric cooling
英文摘要: The stratosphere has been cooling under global warming, the causes of which are not yet well understood. This study applied a process-based decomposition method (CFRAM; Coupled Surface–Atmosphere Climate Feedback Response Analysis Method) to the simulation results of a Coupled Model Intercomparison Project, phase 5 (CMIP5) model (CCSM4; Community Climate System Model, version 4), to demonstrate the responsible radiative and non-radiative processes involved in the stratospheric cooling. By focusing on the long-term stratospheric temperature changes between the “historical run” and the 8.5 W m−2 Representative Concentration Pathway (RCP8.5) scenario, this study demonstrates that the changes of radiative radiation due to CO2, ozone and water vapor are the main divers of stratospheric cooling in both winter and summer. They contribute to the cooling changes by reducing the net radiative energy (mainly downward radiation) received by the stratospheric layer. In terms of the global average, their contributions are around −5, −1.5, and −1 K, respectively. However, the observed stratospheric cooling is much weaker than the cooling by radiative processes. It is because changes in atmospheric dynamic processes act to strongly mitigate the radiative cooling by yielding a roughly 4 K warming on the global average base. In particular, the much stronger/weaker dynamic warming in the northern/southern winter extratropics is associated with an increase of the planetary-wave activity in the northern winter, but a slight decrease in the southern winter hemisphere, under global warming. More importantly, although radiative processes dominate the stratospheric cooling, the spatial patterns are largely determined by the non-radiative effects of dynamic processes. © 2016, Springer-Verlag Berlin Heidelberg.
资助项目: NSFC, National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China ; CMA, China Meteorological Administration ; CAS, Chinese Academy of Sciences
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53442
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作者单位: State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Institute of Atmospheric Physics, Chinese Academy of Sciences, P.O. Box 9804, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; Department of Earth, Ocean, and Atmospheric Science, Florida State University, Tallahassee, FL, United States

Recommended Citation:
Yang Y.,Ren R.-C.,Cai M.. Towards a physical understanding of stratospheric cooling under global warming through a process-based decomposition method[J]. Climate Dynamics,2016-01-01,47(12)
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