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

Coldewey-Egbers, Melanie and Slijkhuis, Sander and Aberle, Bernd and Loyola, Diego (2008) Long-term analysis of GOME in-flight calibration parameters and instrument degradation. Applied Optics, 47 (26), pp. 4749-4761. DOI: 10.1364/AO.47.004749.

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Official URL: http://www.opticsinfobase.org/abstract.cfm?URI=ao-47-26-4749


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 240–316nm 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.

Document Type:Article
Title:Long-term analysis of GOME in-flight calibration parameters and instrument degradation
AuthorsInstitution or Email of Authors
Coldewey-Egbers, MelanieUNSPECIFIED
Slijkhuis, SanderUNSPECIFIED
Date:10 September 2008
Journal or Publication Title:Applied Optics
Page Range:pp. 4749-4761
Keywords:GOME, Calibration, Instrument degradation
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Ozon-SAF (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Dr. Sander Slijkhuis
Deposited On:24 Sep 2008
Last Modified:12 Dec 2013 20:32

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