Correlation between El Niño–Southern Oscillation (ENSO) and precipitation in South-east Asia and the Pacific region
Article first published online: 7 NOV 2003
Copyright © 2003 John Wiley & Sons, Ltd.
Volume 18, Issue 1, pages 107–123, January 2004
How to Cite
Xu, Z. X., Takeuchi, K. and Ishidaira, H. (2004), Correlation between El Niño–Southern Oscillation (ENSO) and precipitation in South-east Asia and the Pacific region. Hydrol. Process., 18: 107–123. doi: 10.1002/hyp.1315
- Issue published online: 29 DEC 2003
- Article first published online: 7 NOV 2003
- Manuscript Accepted: 3 FEB 2003
- Manuscript Received: 26 APR 2002
- El Niño–Southern Oscillation (ENSO);
- Southern Oscillation Index (SOI);
- El Niño;
- La Niña;
The relationship between El Niño–Southern Oscillation (ENSO) events versus precipitation anomalies, and the response of seasonal precipitation to El Niño and La Niña events were investigated for 30 basins that represent a range of climatic types throughout South-east Asia and the Pacific region. The teleconnection between ENSO and the hydroclimate is tested using both parametric and non-parametric approaches, and the lag correlations between precipitation anomalies versus the Southern Oscillation Index (SOI) several months earlier, as well as the coherence between SOI and precipitation anomalies are estimated. The analysis shows that dry conditions tend to be associated with El Niño in the southern zone, and part of the middle zone in the study area. The link between precipitation anomalies and ENSO is statistically significant in the southern zone and part of the middle zone of the study area, but significant correlation was not observed in the northern zone. Patterns of precipitation response may differ widely among basins, and even the response of a given river basin to individual ENSO events also may be changeable. Copyright © 2003 John Wiley & Sons, Ltd.