Articles | Volume 26, issue 10
https://doi.org/10.5194/acp-26-7207-2026
https://doi.org/10.5194/acp-26-7207-2026
Research article
 | 
27 May 2026
Research article |  | 27 May 2026

Errors in satellite-based global horizontal irradiance retrievals due to three-dimensional cloud-radiation interactions

Job I. Wiltink, Victor J. H. Trees, Chiel C. van Heerwaarden, and Jan Fokke Meirink

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Short summary
Retrievals of surface solar radiation from passive satellite instruments normally neglect the three-dimensional (3D) interaction between clouds and radiation. This study identifies error sources arising from this neglect and demonstrates their influence on retrieval accuracy across a range of spatial resolutions.  At the resolution of current geostationary satellites, 3D interactions can already introduce considerable errors, underscoring the need to develop corrections that account for them.
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