Evaluation of the eastern equatorial Pacific SST seasonal cycle in CMIP5 models

doi:10.5194/os-10-837-2014

	Evaluation of the eastern equatorial Pacific SST seasonal cycle in CMIP5 models
	Song, Z. Y.1; Liu, H. L.2,3; Wang, C. Z.3; Zhang, L. P.4; Qiao, F. L.1
刊名	OCEAN SCIENCE
	2014
卷号	10 期号:5 页码:837-843
ISSN号	1812-0784
DOI	10.5194/os-10-837-2014
英文摘要	The annual cycle of sea surface temperature (SST) in the eastern equatorial Pacific (EEP) has the largest amplitude in the tropical oceans, but it is poorly represented in the coupled general circulation models (CGCMs) of the Coupled Model Intercomparison Project Phase 3 (CMIP3). In this study, 18 models from CMIP5 are evaluated in terms of their capability of simulating the SST annual cycle in the EEP. Fourteen models are able to simulate the annual cycle fairly well, which suggests that the performances of CGCMs have been improved. The results of multi-model ensemble (MME) mean show that CMIP5 CGCMs can capture the annual cycle signal in the EEP with a correlation coefficient up to 0.9. Moreover, the CMIP5 models can simulate the westward propagation character of the EEP SST - in particular, EEP region 1 (EP1) near the eastern coast leading EEP region 2 (EP2) near the central equatorial Pacific by 1 to 2 months in spring. However, the models fail to reproduce the in-phase SST relationship between EP1 and EP2 in August and September. For amplitude simulations, the model SST in EP1 shows weaker seasonal variation than the observations due to the large warm SST biases from the southeastern tropical Pacific in the boreal autumn. In EP2, the simulated SST amplitudes are nearly the same as the observations while there is the presence of a quasi-constant cold bias associated with poor cold tongue simulation in the CGCMs. To improve CGCM simulation of a realistic SST seasonal cycle, local and remote SST biases that exist in both CMIP3 and CMIP5 CGCMs must be resolved at least for simulating the SSTs in the central equatorial Pacific and the southeastern tropical Pacific.
资助项目	NSFC-Shandong Joint Fund for Marine Science Research Centres[U1406404]
WOS关键词	GENERAL-CIRCULATION MODELS ; SEA-SURFACE TEMPERATURE ; OCEAN-ATMOSPHERE MODEL ; GLOBAL CLIMATE MODEL ; COUPLED OCEAN ; TROPICAL PACIFIC ; SYSTEM MODEL ; SIMULATIONS ; VARIABILITY ; BIASES
WOS研究方向	Meteorology & Atmospheric Sciences ; Oceanography
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000343940300006
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/27063]
专题	自然资源部第一海洋研究所
通讯作者	Qiao, F. L.
作者单位	1.State Ocean Adm, Inst Oceanog 1, Qingdao, Peoples R China 2.Univ Miami, Cooperat Inst Marine & Atmospher Studies, Miami, FL USA 3.NOAA, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA 4.Princeton Univ, Princeton, NJ 08544 USA
推荐引用方式 GB/T 7714	Song, Z. Y.,Liu, H. L.,Wang, C. Z.,et al. Evaluation of the eastern equatorial Pacific SST seasonal cycle in CMIP5 models[J]. OCEAN SCIENCE,2014,10(5):837-843.
APA	Song, Z. Y.,Liu, H. L.,Wang, C. Z.,Zhang, L. P.,&Qiao, F. L..(2014).Evaluation of the eastern equatorial Pacific SST seasonal cycle in CMIP5 models.OCEAN SCIENCE,10(5),837-843.
MLA	Song, Z. Y.,et al."Evaluation of the eastern equatorial Pacific SST seasonal cycle in CMIP5 models".OCEAN SCIENCE 10.5(2014):837-843.