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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 26 — Sep. 10, 2008
  • pp: 4749–4761

Long-term analysis of GOME in-flight calibration parameters and instrument degradation

Melanie Coldewey-Egbers, Sander Slijkhuis, Bernd Aberle, and Diego Loyola  »View Author Affiliations


Applied Optics, Vol. 47, Issue 26, pp. 4749-4761 (2008)
http://dx.doi.org/10.1364/AO.47.004749


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Abstract

Since 1995, the Global Ozone Monitoring Experiment (GOME) has measured solar and backscattered spectra in the ultraviolet and visible wavelength range. Now, the extensive data set of the most important calibration parameters has been investigated thoroughly in order to analyze the long-term stability and performance of the instrument. This study focuses on GOME in-flight calibration and degradation for the solar path. Monitoring the sensor degradation yields an intensity decrease of 70% to 90% in 240 316 nm and 35% to 65% in 311 415 nm . The spectral calibration is very stable over the whole period, although a very complex interaction between predisperser temperature and wavelength was found. The leakage current and the pixel-to-pixel gain increased significantly during the mission, which requires an accurate correction of the measured radiance and irradiance signals using proper calibration parameters. Finally, several outliers in the data sets can be directly assigned to instrument and satellite anomalies.

© 2008 Optical Society of America

OCIS Codes
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(300.6190) Spectroscopy : Spectrometers
(280.4991) Remote sensing and sensors : Passive remote sensing

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: March 27, 2008
Revised Manuscript: July 22, 2008
Manuscript Accepted: July 24, 2008
Published: September 9, 2008

Citation
Melanie Coldewey-Egbers, Sander Slijkhuis, Bernd Aberle, and Diego Loyola, "Long-term analysis of GOME in-flight calibration parameters and instrument degradation," Appl. Opt. 47, 4749-4761 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-26-4749


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