Carbon monoxide distribution from the ACE-FTS solar occultation measurements

Cathy Clerbaux (1, 2) , Pierre-François Coheur (1) , Daniel Hurtmans (1) , Brice Barret (1) , M. Carleer (1) , R. Colin (1) , K. Semeniuk (3) , J.-C. Mcconnell (3) , C. Boone (4) , P. Bernath (4)

1 Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique
2 SA - Service d'aéronomie
3 ESSE - Department of Earth and Space Science and Engineering [York University - Toronto]
4 Department of Chemistry [Waterloo]

This paper presents a comprehensive analysis of the CO observations acquired during the first eight months (January to September 2004) of the ACE mission. We show that the ACE high-resolution Fourier transform spectrometer (ACE-FTS), which operates in the solar occultation geometry and covers a wide spectral interval in the infrared, provides useful measurements in both the CO 1-0 and 2-0 vibrational bands. Vertically-resolved CO concentration profiles are retrieved, extending from the mid-troposphere to the thermosphere (from about 5 to 110 km). We have analyzed the latitudinal variability of the measurements, from which various physical and chemical atmospheric processes are highlighted for further study.

Mots clés: Chimie atmosphérique; Composition atmosphérique; Pollution atmosphérique

Domaines: Physique Atmosphérique et Océanique [physics.ao-ph]

Cathy Clerbaux, Pierre-François Coheur, Daniel Hurtmans, Brice Barret, M. Carleer, et al.. Carbon monoxide distribution from the ACE-FTS solar occultation measurements. Geophysical Research Letters, 2005, 32, pp.L16S01. ⟨10.1029/2005GL022394⟩. ⟨hal-00070813⟩