Salinity anomaly as a trigger for ENSO events

doi:10.1038/srep06821

IOCAS-IR > 海洋环流与波动重点实验室

	Salinity anomaly as a trigger for ENSO events
	Zhu, Jieshun 1; Huang, Bohua 1,2; Zhang, Rong-Hua3 ; Hu, Zeng-Zhen 4; Kumar, Arun 4; Balmaseda, Magdalena A.5; Marx, Lawrence 1; Kinter, James L., III 1,2; Zhu, JS (reprint author), George Mason Univ, Ctr Ocean Land Atmosphere Studies, Fairfax, VA 22030 USA.
	2014-10-29
发表期刊	SCIENTIFIC REPORTS
卷号	4 页码:6821
文章类型	Article
摘要	According to the classical theories of ENSO, subsurface anomalies in ocean thermal structure are precursors for ENSO events and their initial specification is essential for skillful ENSO forecast. Although ocean salinity in the tropical Pacific (particularly in the western Pacific warm pool) can vary in response to El Nino events, its effect on ENSO evolution and forecasts of ENSO has been less explored. Here we present evidence that, in addition to the passive response, salinity variability may also play an active role in ENSO evolution, and thus important in forecasting El Nino events. By comparing two forecast experiments in which the interannually variability of salinity in the ocean initial states is either included or excluded, the salinity variability is shown to be essential to correctly forecast the 2007/08 La Nina starting from April 2007. With realistic salinity initial states, the tendency to decay of the subsurface cold condition during the spring and early summer 2007 was interrupted by positive salinity anomalies in the upper central Pacific, which working together with the Bjerknes positive feedback, contributed to the development of the La Nina event. Our study suggests that ENSO forecasts will benefit from more accurate salinity observations with large-scale spatial coverage.
学科领域	Science & Technology - Other Topics
DOI	10.1038/srep06821
收录类别	SCI
语种	英语
WOS记录号	WOS:000343983600012
引用统计	被引频次：93[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/23962
专题	海洋环流与波动重点实验室
通讯作者	Zhu, JS (reprint author), George Mason Univ, Ctr Ocean Land Atmosphere Studies, Fairfax, VA 22030 USA.
作者单位	1.George Mason Univ, Ctr Ocean Land Atmosphere Studies, Fairfax, VA 22030 USA 2.George Mason Univ, Coll Sci, Dept Atmospher Ocean & Earth Sci, Fairfax, VA 22030 USA 3.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 4.NOAA, Natl Ctr Environm Predict, Climate Predict Ctr, College Pk, MD USA 5.European Ctr Medium Range Weather Forecasts, Reading RG2 9AX, Berks, England
推荐引用方式 GB/T 7714	Zhu, Jieshun,Huang, Bohua,Zhang, Rong-Hua,et al. Salinity anomaly as a trigger for ENSO events[J]. SCIENTIFIC REPORTS,2014,4:6821.
APA	Zhu, Jieshun.,Huang, Bohua.,Zhang, Rong-Hua.,Hu, Zeng-Zhen.,Kumar, Arun.,...&Zhu, JS .(2014).Salinity anomaly as a trigger for ENSO events.SCIENTIFIC REPORTS,4,6821.
MLA	Zhu, Jieshun,et al."Salinity anomaly as a trigger for ENSO events".SCIENTIFIC REPORTS 4(2014):6821.

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