Variation in joint mode of the tropical Indian-Pacific Ocean thermodynamic anomaly

doi:10.1007/s00343-010-9296-7

IOCAS-IR > 海洋环流与波动重点实验室

	Variation in joint mode of the tropical Indian-Pacific Ocean thermodynamic anomaly
	Zheng Dongmei 1,2,3; Zhang Qilong 1
	2010-05-10
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	0254-4059
卷号	28 期号:3 页码:619-625
文章类型	Article
摘要	Previous research has defined the index of the Indian-Pacific thermodynamic anomaly joint mode (IPTAJM) and suggested that the winter IPTAJM has an important impact on summer rainfall over China. However, the possible causes for the interannual and decadal variability of the IPTAJM are still unclear. Therefore, this work investigates zonal displacements of both the western Pacific warm pool (WPWP) and the eastern Indian Ocean warm pool (EIOWP). The relationships between the WPWP and the EIOWP and the IPTAJM are each examined, and then the impacts of the zonal wind anomalies over the equatorial Pacific and Indian Oceans on the IPTAJM are studied. The WPWP eastern edge anomaly displays significant interannual and decadal variability and experienced a regime shift in about 1976 and 1998, whereas the EIOWP western edge exhibits only distinct interannual variability. The decadal variability of the IPTAJM may be mainly caused by both the zonal migration of the WPWP and the 850 hPa zonal wind anomaly over the central equatorial Pacific. On the other hand, the zonal migrations of both the WPWP and the EIOWP and the zonal wind anomalies over the central equatorial Pacific and the eastern equatorial Indian Ocean may be all responsible for the interannual variability of the IPTAJM.; Previous research has defined the index of the Indian-Pacific thermodynamic anomaly joint mode (IPTAJM) and suggested that the winter IPTAJM has an important impact on summer rainfall over China. However, the possible causes for the interannual and decadal variability of the IPTAJM are still unclear. Therefore, this work investigates zonal displacements of both the western Pacific warm pool (WPWP) and the eastern Indian Ocean warm pool (EIOWP). The relationships between the WPWP and the EIOWP and the IPTAJM are each examined, and then the impacts of the zonal wind anomalies over the equatorial Pacific and Indian Oceans on the IPTAJM are studied. The WPWP eastern edge anomaly displays significant interannual and decadal variability and experienced a regime shift in about 1976 and 1998, whereas the EIOWP western edge exhibits only distinct interannual variability. The decadal variability of the IPTAJM may be mainly caused by both the zonal migration of the WPWP and the 850 hPa zonal wind anomaly over the central equatorial Pacific. On the other hand, the zonal migrations of both the WPWP and the EIOWP and the zonal wind anomalies over the central equatorial Pacific and the eastern equatorial Indian Ocean may be all responsible for the interannual variability of the IPTAJM.
关键词	Tropical Indian Ocean Tropical Pacific Thermodynamic Anomaly Joint Mode Enso Dipole
学科领域	Limnology ; Oceanography
DOI	10.1007/s00343-010-9296-7
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000278924100024
引用统计
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/5318
专题	海洋环流与波动重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Wave, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Marine Environm Forecasting Cent Stn Liaoning Pro, Shenyang 110001, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Zheng Dongmei,Zhang Qilong. Variation in joint mode of the tropical Indian-Pacific Ocean thermodynamic anomaly[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2010,28(3):619-625.
APA	Zheng Dongmei,&Zhang Qilong.(2010).Variation in joint mode of the tropical Indian-Pacific Ocean thermodynamic anomaly.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,28(3),619-625.
MLA	Zheng Dongmei,et al."Variation in joint mode of the tropical Indian-Pacific Ocean thermodynamic anomaly".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 28.3(2010):619-625.

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