Two Leading ENSO Modes and El Nino Types in the Zebiak-Cane Model

doi:10.1175/JCLI-D-17-0469.1

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋环流与波动重点实验室

	Two Leading ENSO Modes and El Nino Types in the Zebiak-Cane Model
	Xie, Ruihuang1,2 ; Jin, Fei-Fei 3
刊名	JOURNAL OF CLIMATE
	2018-03-01
卷号	31 期号:5 页码:1943-1962
ISSN号	0894-8755
DOI	10.1175/JCLI-D-17-0469.1
通讯作者	Jin, Fei-Fei(jff@hawaii.edu)
英文摘要	Modern instrumental records reveal that El Nino events differ in their spatial patterns and temporal evolutions. Attempts have been made to categorize them roughly into two main types: eastern Pacific (EP; or cold tongue) and central Pacific (CP; or warm pool) El Nino events. In this study, a modified version of the Zebiak-Cane (MZC) coupled model is used to examine the dynamics of these two types of El Nino events. Linear eigenanalysis of the model is conducted to show that there are two leading El Nino-Southern Oscillation (ENSO) modes with their SST patterns resembling those of two types of El Nino. Thus, they are referred to as the EP and CP ENSO modes. These two modes are sensitive to changes in the mean states. The heat budget analyses demonstrate that the EP (CP) mode is dominated by thermocline (zonal advective) feedback. Therefore, the weak (strong) mean wind stress and deep (shallow) mean thermocline prefer the EP (CP) ENSO mode because of the relative dominance of thermocline (zonal advective) feedback under such a mean state. Consistent with the linear stability analysis, the occurrence ratio of CP/EP El Nino events in the nonlinear simulations generally increases toward the regime where the linear CP ENSO mode has relatively higher growth rate. These analyses suggest that the coexistence of two leading ENSO modes is responsible for two types of El Nino simulated in the MZC model. This model result may provide a plausible scenario for the observed ENSO diversity.
资助项目	National Natural Science Foundation of China (NFSC)[41506017] ; National Programme on Global Change and Air-Sea Interaction[GASI-IPOVAI-06] ; NSFC-Shandong Joint Fund forMarine Science Research Centers[U1406402] ; U.S. National Science Foundation (NSF)[AGS-1406601] ; U.S. Department of Energy[DE-SC0005110]
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	AMER METEOROLOGICAL SOC
WOS记录号	WOS:000427438100015
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/158415]
专题	海洋研究所_海洋环流与波动重点实验室
通讯作者	Jin, Fei-Fei
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Ocean & Climate Dynam, Qingdao, Peoples R China 3.Univ Hawaii Manoa, Sch Ocean & Earth Sci & Technol, Dept Atmospher Sci, Honolulu, HI 96822 USA
推荐引用方式 GB/T 7714	Xie, Ruihuang,Jin, Fei-Fei. Two Leading ENSO Modes and El Nino Types in the Zebiak-Cane Model[J]. JOURNAL OF CLIMATE,2018,31(5):1943-1962.
APA	Xie, Ruihuang,&Jin, Fei-Fei.(2018).Two Leading ENSO Modes and El Nino Types in the Zebiak-Cane Model.JOURNAL OF CLIMATE,31(5),1943-1962.
MLA	Xie, Ruihuang,et al."Two Leading ENSO Modes and El Nino Types in the Zebiak-Cane Model".JOURNAL OF CLIMATE 31.5(2018):1943-1962.