Spatial and temporal distribution of the western Pacific warm pool and the relationship with ENSO cycle

CHEN Jin-nian; WANG Hong-na; L&#220; Xin-yan

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CHEN Jin-nian, WANG Hong-na, LÜ Xin-yan. Spatial and temporal distribution of the western Pacific warm pool and the relationship with ENSO cycle[J]. Haiyang Xuebao, 2008, 30(1): 10-19.

Citation:

CHEN Jin-nian, WANG Hong-na, LÜ Xin-yan. Spatial and temporal distribution of the western Pacific warm pool and the relationship with ENSO cycle[J]. Haiyang Xuebao, 2008, 30(1): 10-19.

CHEN Jin-nian, WANG Hong-na, LÜ Xin-yan. Spatial and temporal distribution of the western Pacific warm pool and the relationship with ENSO cycle[J]. Haiyang Xuebao, 2008, 30(1): 10-19.

Citation:

CHEN Jin-nian, WANG Hong-na, LÜ Xin-yan. Spatial and temporal distribution of the western Pacific warm pool and the relationship with ENSO cycle[J]. Haiyang Xuebao, 2008, 30(1): 10-19.

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Spatial and temporal distribution of the western Pacific warm pool and the relationship with ENSO cycle

1.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Institute of tropical and Oceanic Meteorology China Meteorological Administration, Guangzhou 510080, China
2.
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2006-09-26
Rev Recd Date: 2007-09-28

Abstract

Abstract

Based on the NCEP/NCAR sea surface temperature (SST) data and the SODA sea temperature data in different depths, the variability of the sea temperature field is studied in the tropical Pacific Ocean.The difference of tropical western Pacific warm pool (WPWP) in shape structure between before and after climate shift has been discussed and then the WPWP has been defined over again.The spatial and temporal variability of the WPWP which is defined anew has been analyzed.The results indicate that the climatological depth of the WPWP by new definition is about 130m and with an "ear" shape structure that is shallow in the west and deep in the east.The WPWP is narrow in the north-south direction and broad in the eastwest direction during winter and spring.The WPWP expands northward during summer and autumn.The climatological deepest center of the WPWP is at about (5°S, 180°) and it is the shallowest during the summer and the deepest during the winter and spring.The variability of the WPWP depth correlated negatively with the index of Niño3.Moreover, the analysis of correlation between sea temperature anomaly at different depths in the WPWP and the index of Niño3 indicates that the east ward propagation of sea temperature anomaly at subsurface layer in the WPWP has major effect on the occurring of ENSO events, but the variability of sea surface temperature anomaly has no close relationship with the ENSO events.
- WPWP,
- shape variation,
- ENSO cycle,

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References(32)

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