Seminar Ozean, Eis, Atmosphäre

On 1st of March 2002 ENVISAT with SCIAMACHY on-board was launched successfully in a sun-synchronous polar orbit. SCIAMACHY is a passive remote sensing instrument, which measures solar back scattered and reflected light from the atmosphere in nadir and limb viewing geometries during the majority of an orbit. In addition solar and lunar occultation measurements will be performed regularly. Measurements are made with moderate spectral resolution (0.2 - 1.5 nm) simultaneously in eight spectral channels covering the spectral region between 220 and 2400 nm. After a few weeks of out gassing SCIAMACHY was switched on successfully and a complex procedure starts to check out the instrument in orbit and tune it to the optimum in-flight performance. First solar and atmospheric spectra were already taken at the begin of April 2002. Since August 2002 the nominal measurement sequence (limb, nadir, occultation, calibration) is performed. The talk will summarise the status of SCIAMACHY in orbit and preliminary results on trace gas retrievals in all observation geometries. In addition an outlook on the availability of first operational and scientific data products will be given.