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Proceedings Paper

Preliminary results on the performance degradation of Earth radiation spectra measured by GOME
Author(s): Cristina P. Tanzi; Ernst Hegels; Ilse Aben; K. Bramstedt; Albert P. H. Goede
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Paper Abstract

The Global Ozone Monitoring Experiment (GOME) is a nadir-viewing spectrometer covering a broad wavelength range, from the UV to the near infrared. It has been operating since 1995 on board the ESA ERS-2 satellite, monitoring a large range of atmospheric trace constituents, with particular emphasis on ozone. The performance of the instrument is monitored in- flight by means of routine on-board calibration measurements, observing the sun and, occasionally, the moon. In this way, degradation of optical components in space can be monitored. For example, the performance of the broad-band detectors which monitor the polarization state of the incoming light is analyzed by means of solar measurements. The measurements of the polarization detector which samples UV light show a degradation of 6 percent per year. The optical components affected have been identified by monitoring the fractional polarization, which is a characteristic of the light back-scattered by the Earth's atmosphere. The influence of the observed degradation of Earth radiation measurements is estimated to be in the order of 1.5 percent per year in the UV wavelength range.

Paper Details

Date Published: 18 August 1998
PDF: 10 pages
Proc. SPIE 3501, Optical Remote Sensing of the Atmosphere and Clouds, (18 August 1998); doi: 10.1117/12.317746
Show Author Affiliations
Cristina P. Tanzi, Space Research Organization Netherlands (Netherlands)
Ernst Hegels, DLR (Germany)
Ilse Aben, Space Research Organization Netherlands (Netherlands)
K. Bramstedt, Univ. of Bremen (Germany)
Albert P. H. Goede, Space Research Organization Netherlands (Netherlands)

Published in SPIE Proceedings Vol. 3501:
Optical Remote Sensing of the Atmosphere and Clouds
Jinxue Wang; Beiying Wu; Toshihiro Ogawa; Zheng-hua Guan, Editor(s)

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