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Temperature trends in the middle atmosphere and the role of the dynamics

Abstract : The continuous temperature measurements since 1979 using Rayleigh scattering have been used to derive the variability, long-term trends and to insure satellite adjustment. Some discrepancies remain due to tides, under-sampling, and dynamic feedbacks. A new analysis method has been developed based on background temperatures instead of mean temperatures. The winter trend estimates was smaller than summer estimates before and is in better agreement with the new method. Stratospheric warmings play a critical role in trend estimates. Sudden stratospheric warmings seem to be associated with a cooling at ground level.
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Submitted on : Thursday, August 9, 2012 - 11:19:32 AM
Last modification on : Tuesday, August 4, 2020 - 3:49:46 AM


  • HAL Id : hal-00723353, version 1


Philippe Keckhut, Guillaume Angot, Alain Hauchecorne, Beatriz M. Funatsu, Chantal Claud. Temperature trends in the middle atmosphere and the role of the dynamics. 26th International Laser Radar Conference (ILRC 26), Jun 2012, Porto Heli, Greece. ⟨hal-00723353⟩



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