Spectral surface albedo derived from GOME-2/Metop measurements

Bringfried Pflug; Diego Loyola

doi:10.1117/12.830368

29 September 2009 Spectral surface albedo derived from GOME-2/Metop measurements

Bringfried Pflug, Diego Loyola

Proceedings Volume 7475, Remote Sensing of Clouds and the Atmosphere XIV; 747518 (2009) https://doi.org/10.1117/12.830368
Event: SPIE Remote Sensing, 2009, Berlin, Germany

Abstract

Spectral surface albedo is an important input for GOME-2 trace gas retrievals. An algorithm was developed for estimation of spectral surface albedo from top-of-atmosphere (TOA)-radiances measured by the Global Ozone Monitoring Experiment GOME-2 flying on-board MetOp-A. The climatologically version of this algorithm estimates Minimum Lambert-Equivalent Reflectivity (MLER) for a fixed time window and can use data of many years in contrast to the Near-real time version. Accuracy of surface albedo estimated by MLER-computation increases with the amount of available data. Unfortunately, most of the large GOME pixels are partly covered by clouds, which enhance the LER-data. A plot of LER-values over cloud fraction is used within this presentation to account for this influence of clouds. This "cloud fraction plot" can be applied over all surface types. Surface albedo obtained using the "cloud fraction plot" is compared with reference surface albedo spectra and with the FRESCO climatology. There is a general good agreement; however there are also large differences for some pixels.

Citation Download Citation

Bringfried Pflug and Diego Loyola "Spectral surface albedo derived from GOME-2/Metop measurements", Proc. SPIE 7475, Remote Sensing of Clouds and the Atmosphere XIV, 747518 (29 September 2009); https://doi.org/10.1117/12.830368

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