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EP: Fachverband Extraterrestrische Physik

EP 4: Sonne und Heliosphäre I

EP 4.2: Vortrag

Dienstag, 14. März 2017, 14:30–14:45, GW2 B2880

SCIAMACHY Solar Reference Spectrum — •Tina Hilbig¹, Klaus Bramstedt¹, Mark Weber¹, Matthijs Krijger², Ralph Snel², and John P. Burrows¹ — ¹Institute of Environmental Physics, University of Bremen, Germany — ²SRON Netherlands Institute for Space Research, Utrecht, the Netherlands

SCIAMACHY (Scanning Imaging Absorption spectroMeter for Atmospheric CHartographY) aboard ESA*s environmental satellite ENVISAT is a double monochromator designed to measure the radiance backscattered from the Earth to study atmospheric trace gas species. It was operating from 2002 until 2012.

Furthermore, SCIAMACHY performed daily sun observations via a diffuser. Solar spectra in the wavelength range from 212 nm to 1760 nm and two narrow bands from 1930 to 2040 nm and 2260 to 2380 nm are measured with a spectral resolution of 0,2 to 1,5 nm in 8 spectral channels.

Recent developments in the SCIAMACHY calibration (e.g. a physical model of the scanner unit including degradation effects, and an on-ground to in-flight correction using the on-board white light source (WLS)) are used for the generation of a new SCIAMACHY solar reference spectrum as a first step towards a 10-year time series of solar spectral irradiance (SSI) data. For validation comparisons with other solar reference spectra are performed.