HR: 0800h
AN: A51C-0774    [Abstracts]
TI: Upper Stratospheric/ Lower Mesospheric Ozone Profiles Retrieved From SCIAMACHY limb spectra: Brief Theory and First Validations; Observations of Ozone Depletion During the Solar Flare in Oct./ Nov. 2003
AU: Rohen, G J
EM: rohen@iup.physik.uni-bremen.de
AF: Institute of Environmental Physics, University of Bremen Otto-Hahn-Allee 1, Bremen, 28359 Germany
AU: * Savigny, C v
EM: csavigny@iup.physik.uni-bremen.de
AF: Institute of Environmental Physics, University of Bremen Otto-Hahn-Allee 1, Bremen, 28359 Germany
AU: Llewellyn, E J
EM: edward.llewellyn@usak.ca
AF: Institute of Space and Atmospheric Studies, University of Saskatchewan 116 Science Place, Saskatoon, S7N 5E2 Canada
AU: Kaiser, J W
EM: jkaiser@geo.unizh.ch
AF: Remote Sensing Laboratories (RSL), University of Zurich Winterthurer Str. 190, Zurich, 8057 Switzerland
AU: Eichmann, K
EM: eichmann@iup.physik.uni-bremen.de
AF: Institute of Environmental Physics, University of Bremen Otto-Hahn-Allee 1, Bremen, 28359 Germany
AU: Bracher, A
EM: bracher@iup.physik.uni-bremen.de
AF: Institute of Environmental Physics, University of Bremen Otto-Hahn-Allee 1, Bremen, 28359 Germany
AU: Bovensmann, H
EM: bov@iup.physik.uni-bremen.de
AF: Institute of Environmental Physics, University of Bremen Otto-Hahn-Allee 1, Bremen, 28359 Germany
AU: Burrows, J P
EM: burrows@iup.physik.uni-bremen.de
AF: Institute of Environmental Physics, University of Bremen Otto-Hahn-Allee 1, Bremen, 28359 Germany
AB: Ozone density profiles between 35 and 65 km altitude are derived from scattered sunlight limb radiance spectra measured by the SCIAMACHY instrument on the Envisat satellite. The method is based on the analysis of normalized limb radiance profiles in the Hartley absorption bands of ozone with selected wavelengths between 250 and 310 nm. It employs a non-linear Newtonian iteration version of Optimal Estimation (OE) coupled with the raditive transfer model SCIARAYS. The limb scatter technique combined with a classical OE retrieval in the short-wave UV-B and long-wave UV-C delivers reliable results. An overview of the methodology, of the most important sources of error and some first validation results are given. Ozone profiles retrieved from limb radiance measurements during the solar proton storm between 28 October and 6 November 2003 show depletion of ozone of about 60% at 50 km.
UR: http://www.iup.physik.uni-bremen.de/$\tilde$rohen/sciamachy/
DE: 2118 Energetic particles, solar
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0340 Middle atmosphere--composition and chemistry
DE: 0394 Instruments and techniques
DE: 0933 Remote sensing
SC: Atmospheric Sciences [A]
MN: 2004 AGU Fall Meeting