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Large-scale validation of SCIAMACHY reflectance in the ultraviolet

By G. Van Soest, L. G. Tilstra and P. Stammes

Abstract

International audienceIn this paper we present an extensive validation of calibrated SCIAMACHY nadir reflectance in the UV (240-400 nm) by comparison with spectra calculated with a fast radiative transfer model. We use operationally delivered near-real-time level 1 data, processed with standard calibration tools. A total of 9 months of data has been analysed. This is the first reflectance validation study incorporating such a large amount of data. It is shown that this method is a valuable tool for spotting spatial and temporal anomalies. We conclude that SCIAMACHY reflectance data in this wavelength range are stable over the investigated period. In addition, we show an example of an anomaly in the data due to an error in the processing chain that could be detected by our comparison. This validation method could be extremely useful too for validation of other satellite spectrometers, such as OMI and GOME-2

Topics: [SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere
Publisher: European Geosciences Union
Year: 2005
OAI identifier: oai:HAL:hal-00295724v1
Provided by: HAL-INSU
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