Articles | Volume 11, issue 7
https://doi.org/10.5194/amt-11-4509-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-11-4509-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 Jul 2018
Research article |
| 27 Jul 2018
| 27 Jul 2018
The importance of surface reflectance anisotropy for cloud and NO2 retrievals from GOME-2 and OMI
Wageningen University, Meteorology and Air Quality Group, Wageningen, the Netherlands
K. Folkert Boersma
Wageningen University, Meteorology and Air Quality Group, Wageningen, the Netherlands
Royal Netherlands Meteorological Institute (KNMI), De Bilt, the Netherlands
Piet Stammes
Royal Netherlands Meteorological Institute (KNMI), De Bilt, the Netherlands
L. Gijsbert Tilstra
Royal Netherlands Meteorological Institute (KNMI), De Bilt, the Netherlands
Andreas Richter
Institute of Environmental Physics (IUP-UB), University of Bremen, Bremen, Germany
Belgian Institute for Space Aeronomy (BIRA-IASB), Brussels, Belgium
Said Kharbouche
Imaging Group, Mullard Space Science Laboratory, Department of Space and Climate Physics, University College London, Holmbury St Mary, UK
Jan-Peter Muller
Imaging Group, Mullard Space Science Laboratory, Department of Space and Climate Physics, University College London, Holmbury St Mary, UK
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Latest update: 31 May 2025
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Short summary
Light reflected by Earth’s surface is different in each direction: it appears brighter or darker in certain viewing directions. Currently this effect is not accounted for in satellite retrievals; thus surface reflectance climatologies and cloud fractions show an east-west bias across orbits (GOME2,OMI). The effect for NO2 measurements in partly cloudy scenes is substantial. We recommend that this effect in UV/Vis sensors coherently accounted for, and will be especially beneficial for TROPOMI.
Light reflected by Earth’s surface is different in each direction: it appears brighter or...
