Hannover 2010 – scientific programme

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UP: Fachverband Umweltphysik

UP 2: Poster Session

UP 2.22: Poster

Tuesday, March 9, 2010, 16:30–18:30, Lichthof

Harmonization of GOME, SCIAMACHY and GOME-2 ozone absorption cross-sections — •Victor Gorshelev, Anna Serdyuchenko, Wissam Chehade, Mark Weber, and John Burrows — Institute of Environmental Physics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany

The global monitoring with satellite borne sensors plays a unique role in the generation of long-term datasets of atmospheric trace gases (in particular ozone). Currently there are three instruments in orbit and two more satellites are planned to be launched in the next decade, resulting in two or more decades of ozone observations. As the lifetime of individual satellite missions is limited, information from different sensors needs to be combined.

The goal of the presented work is to derive a consistent set of absorption cross-sections in the UV/VIS/NIR spectral region for satellite spectrometers. For this purpose the harmonization of cross-sections is carried out by a combination of re-evaluation of the pre-flight laboratory measurements with the satellite spectrometers and new experimental work.

The results of this work are expected to improve the ozone data quality and time series as required for climate, air quality, and stratospheric ozone trend studies. Updated cross-sections will be available for reprocessing with GOME (Global Ozone Measuring Experiment), SCIAMACHY (the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography) and GOME2 and to the scientific community as well. Work is supported by European Space Agency.