Influence of El Niño‐Southern Oscillation in the mesosphere
作者： Tao Li , Natalia Calvo , Jia Yue , Xiankang Dou , J. M. Russell
DOI: 10.1002/GRL.50598
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摘要: [1] Using the middle atmosphere temperature data set observed by Sounding of Atmosphere using Broadband Emission Radiometry (SABER) satellite experiment between 2002 and 2012, temperatures simulated Whole Atmospheric Community Climate Model version 3.5 (WACCM3.5) 1953 2005, we studied influence El Nino-Southern Oscillation (ENSO) on during Northern Hemisphere (NH) wintertime. For first time, a significant winter response to ENSO in mesosphere has been observed, with an anomalous warming ~1.0 K/MEI (Multivariate Index) tropics cooling ~ −2.0 K/MEI NH latitudes. The responses are opposite those stratosphere, agreement previous modeling studies. Temperature SABER show similar patterns WACCM3.5 model. Analysis residual mean meridional circulation reveals downwelling tropical upwelling high latitudes warm events, which is mostly driven eastward gravity wave forcing mesosphere.
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