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Variation in joint mode of the tropical Indian-Pacific Ocean thermodynamic anomaly
Alternative TitleVariation in joint mode of the tropical Indian-Pacific Ocean thermodynamic anomaly
Zheng Dongmei1; Zhang Qilong1
2010
Source PublicationCHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN0254-4059
Volume28Issue:3Pages:619-625
AbstractPrevious 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.
Other AbstractPrevious 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.
KeywordNINO-SOUTHERN-OSCILLATION WARM-POOL EL-NINO WESTERN PACIFIC DISPLACEMENTS CLIMATE EVENTS tropical Indian Ocean tropical Pacific thermodynamic anomaly joint mode ENSO dipole
Indexed ByCSCD
Language英语
Funding Project[National Basic Research Development Program of China (973 Program)] ; [Chinese Adademy of Sciences] ; [Marine Public Walfare Industry]
CSCD IDCSCD:3891797
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/157868
Collection中国科学院金属研究所
Affiliation1.中国科学院
2.中国科学院大学
3.中国科学院金属研究所
Recommended Citation
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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