ECHO-G/S에 나타난 기후변화에 따른 엘니뇨 변화 특성 분석
ENSO Response to Global Warming as Simulated by ECHO-G/S
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Abstract
Global warming may shift the properties and dynamics of ENSO. We study the changes in ENSO characteristics in a coupled general circulation model, ECHO-G/S. First, we analyse the mean state changes by comparing present day 2 climates. The model shows a little El Nino-like changes in the sea surface temperature and wind stres in the eastern tropical Pacific. As the mean temperature rises, the ENSO amplitude and the frequency of strong El Ninos and La Nina decrease. The analysis shows that the weakening of the oceanic sensitivities is related to the weakening of ENSO. In addition to the surface changes, the remote subsurface sea temperature response in the western Pacific to the wind stress in the eastern Pacific influences the subsequent ENSO amplitude. However, ENSO
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