globalchange  > 全球变化的国际研究计划
DOI: 10.1002/joc.6002
Scopus ID: 2-s2.0-85060841692
Impacts of various types of El Niño–Southern Oscillation (ENSO) and ENSO Modoki on the rainy season over the Huaihe River basin
Author: Cao Q.; Hao Z.; Zhou J.; Wang W.; Yuan F.; Zhu W.; Yu C.
Source Publication: International Journal of Climatology
ISSN: 8998418
Publishing Year: 2019
Language: 英语
Keyword: atmospheric circulation ; ENSO ; ENSO Modoki ; Huaihe River basin ; monsoon ; rainy season
Scopus Keyword: Atmospheric pressure ; Atmospheric thermodynamics ; Climate change ; Decay (organic) ; Precipitation (meteorology) ; Rivers ; Water management ; Watersheds ; Atmospheric circulation ; ENSO ; ENSO Modoki ; Huaihe river basins ; monsoon ; Rainy seasons ; Oceanography
English Abstract: Precipitation is a significant parameter in many aspects such as agriculture, water management and climate variability. To characterize rainy season variations is important to understand precipitation variability under the effect of climate change. In this study, rainy season features (i.e., onset, retreat and rainy-season precipitation) over the Huaihe River basin (HRB) and the response to different types of El Niño–Southern Oscillation (ENSO), that is, central Pacific warming (CPW), eastern Pacific warming (EPW), eastern Pacific cooling (EPC), conventional ENSO and ENSO Modoki in the developing and decaying phases are evaluated. The multi-scale moving t test was used to capture onset and retreat of rainy season. The possible dynamic causes of ENSO-induced precipitation over the HRB, such as monsoon and atmospheric circulation, were also explored. Results show that (a) onset (retreat) of rainy season progressed northwards (westwards), with rainy-season precipitation increasing from north to south; (b) rainy-season precipitation showed a strong correlation to Sea Surface Temperature (SST) in Niño regions. Dry and wet signals were identified in different regions of the HRB in the developing and decaying phases of CPW, EPC and EPW. Special attention should be paid on decaying EPW, where totally dry signals were found, which can reach down to 25% below average precipitation; (c) developing El Niño Modoki and decaying El Niño showed totally dry signals, with decaying El Niño Modoki and conventional La Niña demonstrating overall increasing precipitation; (d) different performances of ENSO-induced precipitation during rainy season over the HRB are attributable to the combined influences of the monsoon from the India Ocean and the anticyclonic flow in the western North Pacific (WNP). Stronger anticyclone and monsoon are generally associated with increasing rainy-season precipitation. These results can improve predictability of rainy season features and ENSO-induced precipitation over the Huaihe River basin. © 2019 Royal Meteorological Society
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Document Type: 期刊论文
Appears in Collections:全球变化的国际研究计划

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Affiliation: State Key Laboratory of Hydrology Water Resources and Hydraulic Engineering, Hohai University, Nanjing, China; Department of Hydrology and Water Resources, Hohai University, Nanjing, China; National Cooperative Innovation Center for Water Safety & Hydro-Science, Hohai University, Nanjing, China; Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China

Recommended Citation:
Cao Q.,Hao Z.,Zhou J.,et al. Impacts of various types of El Niño–Southern Oscillation (ENSO) and ENSO Modoki on the rainy season over the Huaihe River basin[J]. International Journal of Climatology,2019-01-01
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