지구온난화 환경에서 ENSO-PDO 상관성 분석

Abstract

We examine changes in El Nino and ENSO/PDO relationship under the global warming using coupled climate models participating in the IRCC AR4. While the spatial structure of both the ENSO and PDO is altered little, the temporal structure for the ENSO-PDO relationship is changed remarkably. Under the global warming the relationship between ENSO-PDO during the boreal winter becomes stronger so that there would be more frequent in phase occurrece of ENSO and PDO. Since PDO could constructively interfere with the ENSO-related climate when ENSO and PDO are in phase, one may expect strong climate signal to ENSO in the midlatitude in the future.