DOI: 10.1007/s00382-013-1928-0
Scopus记录号: 2-s2.0-84906095652
论文题名: Upper tropospheric warming intensifies sea surface warming
作者: Xiang B. ; Wang B. ; Lauer A. ; Lee J.-Y. ; Ding Q.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 43, 期: 2017-01-02 起始页码: 259
结束页码: 270
语种: 英语
英文摘要: One of the robust features in the future projections made by the state-of-the-art climate models is that the highest warming rate occurs in the upper-troposphere especially in the tropics. It has been suggested that more warming in the upper-troposphere than the lower-troposphere should exert a dampening effect on the sea surface warming associated with the negative lapse rate feedback. This study, however, demonstrates that the tropical upper-tropospheric warming (UTW) tends to trap more moisture in the lower troposphere and weaken the surface wind speed, both contributing to reduce the upward surface latent heat flux so as to trigger the initial sea surface warming. We refer to this as a 'top-down' warming mechanism. The rise of tropospheric moisture together with the positive water vapor feedback enhance the downward longwave radiation to the surface and facilitate strengthening the initial sea surface warming. Meanwhile, the rise of sea surface temperature (SST) can feed back to intensify the initial UTW through the moist adiabatic adjustment, completing a positive UTW-SST warming feedback. The proposed 'top-down' warming mechanism and the associated positive UTW-SST warming feedback together affect the surface global warming rate and also have important implications for understanding the past and future changes of precipitation, clouds and atmospheric circulations. © 2013 Springer-Verlag Berlin Heidelberg. 资助项目: NASA, National Aeronautics and Space Administration
; NOAA, National Aeronautics and Space Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54404
Appears in Collections: 过去全球变化的重建
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作者单位: International Pacific Research Center, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI, 96822, United States; Department of Meteorology, School of Ocean and Earth Science and Technology, University of Hawaii, Honolulu, HI, 96822, United States; Department of Earth and Space Sciences, Quaternary Research Center, University of Washington, Seattle, WA, United States; Institute for Advanced Sustainability Studies, Potsdam, Germany; Institute of Environmental Studies, Pusan National University, Busan, South Korea
Recommended Citation:
Xiang B.,Wang B.,Lauer A.,et al. Upper tropospheric warming intensifies sea surface warming[J]. Climate Dynamics,2014-01-01,43(2017-01-02)