Inversion of infrared spectra obtained at the «Observatoire du Pic du Midi »

In: Bulletin de la Classe des Sciences de l'Académie Royale de Sciences, des Lettres et des Beaux-Arts de Belgique, Band 69, Heft 1, S. 379-387

Abstract

Three campaigns of observations performed at the «Observatoire du Pic du Midi » are analysed from the point of view of nitric acid and chlorofluorocarbon 11. The spectra, obtained in the 10 window, in both absorption and emission, permit to determine that most of the nitric acid absorbs above the tropopause while on the contrary, CFC13 emits and absorbs in the troposphere. The trend of CFC13 is observed between 1980 and 1982 ; an increase rate equal to the one measured between 1972 and 1980 is determined.