A study of biases in simulation of the Indian Ocean basin mode and its capacitor effect in CMIP3/CMIP5 models

doi:10.1007/s00382-015-2579-0

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋与气候研究中心

	A study of biases in simulation of the Indian Ocean basin mode and its capacitor effect in CMIP3/CMIP5 models
	Tao, Weichen 1,6; Huang, Gang 1,2; Hu, Kaiming 1,2,3; Gong, Hainan 3; Wen, Guanhuan 4; Liu, Lin 5
刊名	CLIMATE DYNAMICS
	2016-01
卷号	46 期号:1-2 页码:205-226
关键词	CMIP models IOBM Atmospheric and oceanic processes The capacitor effect Model biases
ISSN号	0930-7575
DOI	10.1007/s00382-015-2579-0
英文摘要	Based on 15 Coupled Model Intercomparison Project (CMIP) phase 3 (CMIP3) and 32 CMIP phase 5 (CMIP5) models, a detailed diagnosis was carried out to understand what compose the biases in simulation of the Indian Ocean basin mode (IOBM) and its capacitor effect. Cloud-radiation-SST (CRS) feedback and wind-evaporation-SST (WES) feedback are the two major atmospheric processes for SST changes. Most CMIP models simulate a stronger CRS feedback and a weaker WES feedback. During boreal fall of the El Nino/Southern Oscillation developing year and the following spring, there are weak biases of suppressed rainfall anomalies over the Maritime Continent and anomalous anticyclone over South Indian Ocean. Most CMIP models simulate reasonable short wave radiation (SWR) and weaker latent heat flux (LHF) anomalies. This leads to a weak bias of atmospheric processes. During winter, however, the rainfall anomalies are stronger due to west bias, and the anomalous anticyclone is comparable to observations. As such, most models simulate stronger SWR and reasonable LHF anomalies, leading to a strong bias of atmospheric processes. The thermocline feedback is stronger in most models. Though there is a deep bias of climatology thermocline, most models capture reasonable sea surface height-induced SST anomalies. Therefore, the effect of oceanic processes offset the weak bias of atmospheric processes in spring, and the tropical Indian Ocean warming persists into summer. However, anomalous northwest Pacific (NWP) anticyclone is weaker due to weak and west bias of the capacitor effect. The unrealistic western Pacific SST anomalies in models favor the westward extension of Rossby wave from the Pacific, weakening the effect of Kelvin wave from the Indian Ocean. Moreover, the western Pacific warming forces the NWP anticyclone move farther north than observations, suggesting a major forcing from the Pacific. Compared to CMIP3, CMIP5 models simulate the feedbacks more realistically and display less diversity. Thus, the overall performance of CMIP5 models is better than that of CMIP3 models.
资助项目	National Natural Science Foundation of China[41205049] ; National Natural Science Foundation of China[41275083] ; National Natural Science Foundation of China[91337105]
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000370040100016
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/3547]
专题	业务部门_海洋与气候研究中心
作者单位	1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100029, Peoples R China; 2.Joint Ctr Global Change Studies, Beijing 100875, Peoples R China; 3.Chinese Acad Sci, Inst Atmospher Phys, Ctr Monsoon Syst Res, Beijing 100029, Peoples R China; 4.China Meteorol Adm, Guangzhou Inst Trop & Marine Meteorol, Guangdong Prov Key Lab RegionalNumer Weather Pred, Guangzhou 510080, Guangdong, Peoples R China; 5.State Ocean Adm, Ctr Ocean & Climate Res, Inst Oceanog 1, Qingdao 266061, Peoples R China; 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tao, Weichen,Huang, Gang,Hu, Kaiming,et al. A study of biases in simulation of the Indian Ocean basin mode and its capacitor effect in CMIP3/CMIP5 models[J]. CLIMATE DYNAMICS,2016,46(1-2):205-226.
APA	Tao, Weichen,Huang, Gang,Hu, Kaiming,Gong, Hainan,Wen, Guanhuan,&Liu, Lin.(2016).A study of biases in simulation of the Indian Ocean basin mode and its capacitor effect in CMIP3/CMIP5 models.CLIMATE DYNAMICS,46(1-2),205-226.
MLA	Tao, Weichen,et al."A study of biases in simulation of the Indian Ocean basin mode and its capacitor effect in CMIP3/CMIP5 models".CLIMATE DYNAMICS 46.1-2(2016):205-226.