UV Remote Sensing of the Mesosphere With OSIRIS

Details UV Remote Sensing of the Mesosphere With OSIRIS UV Remote Sensing of the Mesosphere With OSIRIS

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsa23b..01l&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SA23B-01

Physics

1610 Atmosphere (0315, 0325), 0300 Atmospheric Composition And Structure, 0310 Airglow And Aurora, 0340 Middle Atmosphere: Composition And Chemistry, 0394 Instruments And Techniques

Scientific paper

The OSIRIS instrument on the Odin satellite includes an optical spectrograph that makes limb measurements of both scattered sunlight and the airglow in the wavelength range 280-800 nm. While the scattered sunlight in the mesosphere is quite bright (typically 1E4 R/A at 70 km) it is possible to identify airglow features that are excited through the resonant absorption of sunlight. In this paper we present new mesospheric observations in the wavelength region 300-325 nm and suggest that the airglow feature at 308 nm is due to emission from the OH (A-X) system. With this identification we can determine the mesospheric profile of OH in the ground vibrational state. The possibility of determining the water vapour profile in the mesosphere is also discussed.

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