globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-011-1164-4
Scopus记录号: 2-s2.0-84866370121
论文题名:
Reduction of the thermocline feedback associated with mean SST bias in ENSO simulation
作者: Xiang B.; Wang B.; Ding Q.; Jin F.; Fu X.; Kim H.-J.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 39, 期:6
起始页码: 1413
结束页码: 1430
语种: 英语
英文关键词: Air-sea coupling ; ENSO ; SST bias ; Thermocline feedback
英文摘要: Associated with the double Inter-tropical convergence zone problem, a dipole SST bias pattern (cold in the equatorial central Pacific and warm in the southeast tropical Pacific) remains a common problem inherent in many contemporary coupled models. Based on a newly-developed coupled model, we performed a control run and two sensitivity runs, one is a coupled run with annual mean SST correction and the other is an ocean forced run. By comparison of these three runs, we demonstrated that a serious consequence of this SST bias is to severely suppress the thermocline feedback in a realistic simulation of the El Niño/Southern Oscillation. Firstly, the excessive cold tongue extension pushes the anomalous convection far westward from the equatorial central Pacific, prominently diminishing the convection-low level wind feedback and thus the air-sea coupling strength. Secondly, the equatorial surface wind anomaly exhibits a relatively uniform meridional structure with weak gradient, contributing to a weakened wind-thermocline feedback. Thirdly, the equatorial cold SST bias induces a weakened upper-ocean stratification and thus yields the underestimation of the thermocline-subsurface temperature feedback. Finally, the dipole SST bias underestimates the mean upwelling through (a) undermining equatorial mean easterly wind stress, and (b) enhancing convective mixing and thus reducing the upper ocean stratification, which weakens vertical shear of meridional currents and near-surface Ekman-divergence. © 2011 Springer-Verlag.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55180
Appears in Collections:过去全球变化的重建

Files in This Item:

There are no files associated with this item.


作者单位: Department of Meteorology, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, 2525 Correa Rd., HIG 350, Honolulu, HI 96822, United States; International Pacific Research Center, University of Hawaii at Manoa, Honolulu, HI 96822, United States; Department of Earth and Space Sciences, Quaternary Research Center, University of Washington, Seattle, WA 98195, United States; Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology, 3173-25 Showa-machi, Kanazawa-ku, Yokohama, Kanagawa 236-0001, Japan

Recommended Citation:
Xiang B.,Wang B.,Ding Q.,et al. Reduction of the thermocline feedback associated with mean SST bias in ENSO simulation[J]. Climate Dynamics,2012-01-01,39(6)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Xiang B.]'s Articles
[Wang B.]'s Articles
[Ding Q.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Xiang B.]'s Articles
[Wang B.]'s Articles
[Ding Q.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Xiang B.]‘s Articles
[Wang B.]‘s Articles
[Ding Q.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.