Absorption cross-sections of atmospheric constituents: NO2, O2, and H2O |
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| Authors: | Christian Hermans Ann C Vandaele Michel Carleer Sophie Fally Réginald Colin Alain Jenouvrier Bernard Coquart Marie-France Mérienne |
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| Institution: | (1) Institut d’Aéronomie Spatiale de Belgique, 3 av. Circulaire, B-1180 Bruxelles, Belgium;(2) Laboratoire de Chimie Physique Moléculaire, Université Libre de Bruxelles, CP160/9, 50 av. F. D. Roosevelt, B-1050 Bruxelles, Belgium;(3) Groupe de Spectrométrie Moléculaire et Atmosphérique, URA D1434, UFR Sciences, Moulin de la Housse, F-51687 Reims Cedex 2, France |
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| Abstract: | Absorption spectroscopy, which is widely used for concentration measurements of tropospheric and stratospheric compounds,
requires precise values of the absorption cross-sections of the measured species. NO2, O2 and its collision-induced absorption spectrum, and H2O absorption cross-sections have been measured at temperature and pressure conditions prevailing in the Earth’s atmosphere.
Corrections to the generally accepted analysis procedures used to resolve the convolution problem are also proposed. |
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| Keywords: | Absorption cross-section air pollution measurement convolution procedures DOAS technique Fourier transform spectrometer NO2 O2 H2O collision-induced absorption stratosphere troposphere UV visible near IR |
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