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UP: Umweltphysik

UP 3: Atmosph
ärische Spurengase und Aerosole: Intrumentelles I

UP 3.2: Fachvortrag

Montag, 7. März 2005, 14:45–15:00, TU TA201

Applications of SCIAMACHY limb observations: Profile retrievals, proton events, temperature measurements and NLC detections — •G. J. Rohen¹, C. von Savigny¹, K.-U. Eichmann¹, A. Rozanov¹, E. J. Llewellyn², A. Bracher¹, M. Sinnhuber¹, H. Bovensmann¹, and J. P. Burrows¹ — ¹Institute of Environmental Physics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen — ²Institute of Space and Atmospheric Studies, University of Saskatchewan, 116 Science Place, Saskatoon, Canada

The absorption spectrometer SCIAMACHY is one of ten instruments onboard of environmental spacecraft Envisat that was launched by ESA on 1 March 2002. It combines three different viewing modes to record radicances scattered, reflected and transmitted light in a wavelength region in the UV and visible range from 240 nm to 2.4 micrometer. The limb viewing mode provides a vertical resolution of about 3 km and a spatial resolution of about 960 km with a spectral resolution of up to 0.25 nm, that allows to retrieve profiles of almost the most trace gases like ozone and nitrogen-dioxide and other features of the atmosphere like temperatures and nocti-lucent clouds. An overview of some retrieval techniques and applications is given with an emphasis to a ozone depletion in the mesosphere and upper stratosphere driven by a solar proton storm in October and November 2003.