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Water 2017, 9(7), 469; https://doi.org/10.3390/w9070469

ENSO Influence on Rainy Season Precipitation over the Yangtze River Basin

1
State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
2
National Cooperative Innovation Center for Water Safety & Hydro-Science, Hohai University, Nanjing 210098, China
3
Department of Water Resources Engineering and Center for Middle Eastern Studies, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden
*
Authors to whom correspondence should be addressed.
Received: 20 April 2017 / Revised: 11 June 2017 / Accepted: 24 June 2017 / Published: 27 June 2017
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Abstract

The paper explores the impact of El Niño-Southern Oscillation (ENSO) on rainy season precipitation properties over the Yangtze River Basin. The multi-scale moving t-test was used to determine the onset and withdrawal of the rainy season. Results showed the following: (1) Onset and withdrawal of the averaged rainy season over the Yangtze River Basin showed a similar distribution and both progressed northwards and westwards. There is a trend for delayed onset of rainy season precipitation over the Yangtze River Basin. A similar trend in the withdrawal of rainy season precipitation was not found. (2) The decaying Central and Eastern Pacific Warming are indicative of wet signals in the Yangtze River Basin, with precipitation anomalies up to 25% above normal. The decaying Eastern Pacific Cooling and developing Eastern Pacific Warming are indicative of dry signals over the Yangtze River Basin, with 5–20% lower than average precipitation (3) ENSO Modoki in the developing phase is more important than the developing ENSO when it comes to present wetter or drier signals. Conversely, the decaying ENSO shows more prominent wet or dry signals than the decaying ENSO Modoki. View Full-Text
Keywords: Yangtze River Basin; ENSO; Modoki; rainy season; precipitation; climate Yangtze River Basin; ENSO; Modoki; rainy season; precipitation; climate
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Cao, Q.; Hao, Z.; Yuan, F.; Su, Z.; Berndtsson, R. ENSO Influence on Rainy Season Precipitation over the Yangtze River Basin. Water 2017, 9, 469.

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