NUMERICAL MODELING STUDY OF EFFECTS OF EASTERN PACIFIC WARM POOL ON ENSO |
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Authors: | YUE Cai-jun LU Wei-song Xiaofan LI |
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Affiliation: | 1. Shanghai Typhoon Institute of the China Meteorological Administration, Shanghai 200030 China;Laboratory of Typhoon Forecast Technique/CMA, Shanghai 200030 China 2. School of Atmospheric Sciences, Nanjing University of Information Science and Technology, Nanjing 210044 China 3. Joint Center for Satellite Data Assimilation and NOAA/NESDIS/Center for Satellite Applications and Research Camp Springs, Maryland, USA |
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Abstract: | In this study,sensitivity experiments were conducted with the Zebiak-Cane ocean-atmosphere coupled model forced by the wind stress anomaly from the U.S.National Centers for Environmental Prediction/National Center for Atmospheric Research (NCEP/NCAR) reanalysis data to study the impacts of eastern Pacific warm pool on the formation and development of ENSO events.The effects of climatological mean sea surface temperature of the warm pool on forecast skill during the ENSO events of 1982-1999 are more considerable that those of climatological mean meridional winds and ocean currents.The forecast skill for the 1997/1998 E1 Ni(n)o event is characterized by sensitivity to climatological mean sea surface temperature and anomalies of northerly winds and currents.The forecast skill is found insensitive to climatological mean northerly meridional winds and currents. |
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Keywords: | eastern Pacific warm pool ENSO event Zebiak-Cane ocean-atmosphere coupled model sensitivity experiments |
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