Ozone retrieval from SPICAM UV nadir observations: a first global view of ozone on Mars

Details Ozone retrieval from SPICAM UV nadir observations: a first global view of ozone on Mars Ozone retrieval from SPICAM UV nadir observations: a first global view of ozone on Mars

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005dps....37.2405p&link_type=abstract

American Astronomical Society, DPS meeting #37, #24.05; Bulletin of the American Astronomical Society, Vol. 37, p.664

Astronomy and Astrophysics

Astronomy

Scientific paper

The dual UV/IR spectrometer SPICAM on board MARS-EXPRESS is mainly dedicated to monitor the composition of the Mars atmosphere. The majority of the spectra taken by SPICAM in the range 110 to 320 nm are in a nadir geometry (downward looking mode) where Mars is observed through the atmosphere. Some of these UV spectra contain a disctinct spectral signature of ozone: a broad absorption band around 255 nm. We present the method used to retrieve the total column-integrated ozone quantity from the nadir-geometry spectra. The results for more than half-a-martian year will be shown and compared to the Global Circulation Model predictions for various seasons and latitudes. A first attempt to establish an ozone martian climatology will be presented.

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