期刊
HYDROLOGY AND EARTH SYSTEM SCIENCES
卷 21, 期 11, 页码 5415-5426出版社
COPERNICUS GESELLSCHAFT MBH
DOI: 10.5194/hess-21-5415-2017
关键词
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资金
- National Key Research Projects [2016YFC0402704]
- National Natural Science Foundation of China [41371047]
- China Postdoctoral Science Foundation [2016M601711]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1601027B]
This study investigated the influence of five El Nino-Southern Oscillation (ENSO) types on rainy-season precipitation in China: central Pacific warming (CPW), eastern Pacific cooling (EPC), eastern Pacific warming (EPW), conventional ENSO and ENSO Modoki. The multi-scale moving t test was applied to determine the onset and withdrawal of rainy season. Results showed that the precipitation anomaly can reach up to 30% above average precipitation during decaying CPW and EPW phases. Developing EPW could cause decreasing precipitation over large areas in China with 10-30% lower than average precipitation in most areas. Conventional El Nino in the developing phase had the largest influence on ENSO-related precipitation among developing ENSO and ENSO Modoki regimes. Decaying ENSO also showed a larger effect on precipitation anomalies, compared to decaying ENSO Modoki. The difference between rainy-season precipitation under various ENSO regimes may be attributed to the combined influence of anti-cyclone in the western North Pacific and the Indian monsoon. Stronger monsoon and anti-cyclone are associated with enhanced rainy-season precipitation. The results suggest a certain predictability of rainy-season precipitation related to ENSO regimes.
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