Physics – Geophysics
Scientific paper
Jun 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001georl..28.2397h&link_type=abstract
Geophysical Research Letters, Volume 28, Issue 12, p. 2397-2400
Physics
Geophysics
15
Atmospheric Composition And Structure: Cloud Physics And Chemistry, Atmospheric Composition And Structure: Troposphere-Composition And Chemistry, Exploration Geophysics: Data Processing, Exploration Geophysics: Remote Sensing
Scientific paper
Infrared atmospheric measurements provided by space nadir looking remote sensors are affected by the presence of clouds. To obtain cloud-free CO global distributions from the radiance spectra measured by the IMG instrument, we have developed a simple method of spectra selection using skin temperatures provided by the ECMWF model. Information on the cloud cover was provided by the cloud data of the POLDER instrument which flew aboard the same platform as IMG. We show that a filter based on skin temperature, with thresholds of 8 K over sea and 15.3 K over land, allows to remove most of the cloudy cases.
Boonne Cathy
Chazette Patrick
Clerbaux Cathy
Couvert Pierre
Hadji-Lazaro Juliette
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