Search for OClO signatures from Odin limb-radiance measurements using DOAS technique
Abstract
OSIRIS, the optical spectrograph aboard Odin satellite, provides spectra of sunlit Earth limb in the UV-Vis spectral region (275-815 nm). Vertical column densities of O3, NO2, and several trace gases relevant for stratospheric ozone chemistry, can be retrieved from these measurements by combination of modeling and the DOAS technique (Differential Optical Absorption Spectroscopy). This retrieval method and its sensitivity to different instrumental effects have been extensively studied during the years before the Odin launch, both by modeling and using the ground-based UV-Vis measurements. A search is now undertaken to detect increased OClO concentrations over Antarctica during the period of chlorine activation in the last austral spring.
- Publication:
-
EGS - AGU - EUG Joint Assembly
- Pub Date:
- April 2003
- Bibcode:
- 2003EAEJA.....6203K