Variability and trends in the OH airglow layer observed by GOMOS/ENVISAT

Abstract : The OH near-infrared nigthglow emission in the upper mesosphere is a marker of the chemistry and dynamics occurring at this level. The stellar occultation spectrometer GOMOS on board ENVISAT allowed to observe the OH(8-4) Meinel band in the spectral range 930-955 nm with a spectrometer dedicated to the observation of the water vapour. Climatology of OH emission has been established for the period 2002-2012. It allowed to confirm already published results as the maximum of intensity and semi-annual variation at the equator. The causes of variability and trends in the brightness and maximum altitude of the OH layer will be discussed. A new result concerns the apparent correlation of the emission rate with the solar activity.
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Submitted on : Monday, April 18, 2016 - 5:07:24 PM
Last modification on : Tuesday, May 14, 2019 - 11:09:25 AM

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  • HAL Id : insu-01303872, version 1

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Alain Hauchecorne, Laurent Blanot, Christophe Bellisario, Philippe Keckhut, Pierre Simoneau, et al.. Variability and trends in the OH airglow layer observed by GOMOS/ENVISAT. European Geosciences Union General Assembly 2016, Apr 2016, Vienna, Austria. pp. EGU2016-17349. ⟨insu-01303872⟩

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