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| Titel |
Spatial representativeness of ground-based solar radiation measurements – Extension to the full Meteosat disk |
| VerfasserIn |
Maria Zyta Hakuba, Doris Folini, Arturo Sanchez-Lorenzo, Martin Wild |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250102041
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| Publikation (Nr.) |
 EGU/EGU2015-1318.pdf |
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| Zusammenfassung |
| The spatial representativeness of a point measurement of surface solar radiation (SSR) of its
larger-scale surrounding, e.g. collocated grid cell, is a potential source of uncertainty in the
validation of climate models and satellite products. Here, we expand our previous study over
Europe to the entire Meteosat disk, covering additional climate zones in Africa, the Middle
east, and South America between -70° to 70° East and -70° to 70° North. Using a
high-resolution (0.03°) satellite-based SSR dataset (2001–2005), we quantify the spatial
subgrid variability in grids of 1° and 3° resolution and the spatial representativeness of 887
surface sites with respect to site-centered surroundings of variable size. In the multi-annual
mean the subgrid variability is the largest in some mountainous and coastal regions, but varies
seasonally due to changes in the ITCZ location. The absolute mean representation
errors at the surface sites with respect to surroundings of 1° and 3° are on average
1-2
Hakuba, M. Z., D. Folini, A. Sanchez-Lorenzo, and M. Wild, Spatial representativeness
of ground-based solar radiation measurements – Extension to the full Meteosat disk, J.
Geophys. Res. Atmos., 119, doi:10.1002/2014JD021946,2014. |
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