SCIAMACHY Level1 data: Calibration concept and in-flight calibration

G. Lichtenberg (1) , Q. Kleipool (1) , J. M. Krijger (1) , G. van Soest (1, 2) , R. van Hees (1) , L. G. Tilstra (2) , J. R. Acarreta (2) , I. Aben (1) , B. Ahlers (3) , H. Bovensmann (4) , K. Chance (5) , A. M. S. Gloudemans (1) , R. W. M. Hoogeveen (1) , R. Jongma (1) , S. Noël (4) , A. Piters (2) , H. Schrijver (1) , C. Schrijvers (3) , C. E. Sioris (5) , J. Skupin (4) , S. Slijkhuis (6) , P. Stammes (2) , M. Wuttke (4)

1 SRON - SRON Netherlands Institute for Space Research
2 KNMI - Royal Netherlands Meteorological Institute
3 TNO Science and Industry
4 Institute of Remote Sensing [Bremen]
5 CfA - Harvard-Smithsonian Center for Astrophysics
6 IMF - DLR Institut für Methodik der Fernerkundung / DLR Remote Sensing Technology Institute

This paper discusses the basic concept of the calibration of the SCIAMACHY instrument and remaining open issues. SCIAMACHY is a scanning Limb/Nadir spectrometer covering the wavelength range from 212 nm to 2386 nm. It was launched on-board ENVISAT in February 2002. In general the instrument performance is excellent: It performs as tested on ground and there is only very minor degradation in time. The only exception is the unexpected formation of water ice on the infrared channels 7 and 8 that attenuates the signal and a light leak in channel 7. Both effects will be discussed. In the paper we will explain all individual calibration steps needed to come to a wavelength calibrated spectrum of the Earth reflectance. Open points in the calibrations and latest improvements, such as the new radiometric calibration will also be treated.

Domaines: Océan, Atmosphère

G. Lichtenberg, Q. Kleipool, J. M. Krijger, G. van Soest, R. van Hees, et al.. SCIAMACHY Level1 data: Calibration concept and in-flight calibration. Atmospheric Chemistry and Physics Discussions, 2005, 5 (5), pp.8925-8977. ⟨hal-00301793⟩