Articles | Volume 19, issue 10
https://doi.org/10.5194/amt-19-3193-2026
https://doi.org/10.5194/amt-19-3193-2026
Research article
 | 
19 May 2026
Research article |  | 19 May 2026

Comparative analysis of GOME and SCIAMACHY reflectance over Pseudo-Invariant Calibration Sites: implications for spectrometers cross-calibration

Abdalmenem Owda and Günter Lichtenberg

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Reflectance-based cross-calibration of GOME and SCIAMACHY spectrometers enhanced by polarization monitoring devices data
Abdalmenem Owda, Melanie Coldewey-Egbers, Sander Slijkhuis, Günter Lichtenberg, and Bernd Aberle
Atmos. Meas. Tech., 19, 3213–3229, https://doi.org/10.5194/amt-19-3213-2026,https://doi.org/10.5194/amt-19-3213-2026, 2026
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Cited articles

Barsi, J. A., Alhammoud, B., Czapla-Myers, J., Gascon, F., Haque, M. O., Kaewmanee, M., Leigh, L., and Markham, B. L.: Sentinel-2A MSI and Landsat-8 OLI radiometric cross comparison over desert sites, Eur. J. Remote Sens., 51, 822–837, https://doi.org/10.1080/22797254.2018.1507613, 2018. a
B ovensmann, H., Burrows, J., Buchwitz, M., Frerick, J., Noel, S., Rozanov, V., Chance, K., and Goede, A.: SCIAMACHY: Mission objectives and measurement modes, J. Atmos. Sci., 56, 127–150, 1999. a
Burrows, J. P., Weber, M., Buchwitz, M., Rozanov, V., Ladstätter-Weißenmayer, A., Richter, A., DeBeek, R., Hoogen, R., Bramstedt, K., Eichmann, K.-U., Eisinger, M., and Perner, D.: The global ozone monitoring experiment (GOME): Mission concept and first scientific results, J. Atmos. Sci., 56, 151–175, 1999. a
Cabor, F., Hagolle, O., Cosnefroy, H., and Briottet, X.: Inter-calibration using desertic sites as a reference target, in: IGARSS'98. Sensing and Managing the Environment. 1998 IEEE International Geoscience and Remote Sensing. Symposium Proceedings, no. 98CH36174, IEEE, 5, 2713–2715, https://doi.org/10.1109/IGARSS.1998.702327, 1998. a, b
CEOS: PICS: Pseudo-Invariant Calibration Sites, https://calvalportal.ceos.org/web/guest/pics_sites (last access: 27 March 2026), 2026. a
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Short summary
This paper introduces a framework for tracking sensor performance and comparison. We analyzed two decades of reflectance data from two well-known spectrometers over 20 desert sites, covering about 1300 spectral channels. The results lay the groundwork for cross-calibration of spectrometers by identifying which reference/constrained sensor and investigating the stability of invariant calibration sites.
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