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| Titel |
Combined modelling of shortwave and thermal radiation for one-imensional SVATs |
| VerfasserIn |
D. Pearson, C. C. Daamen, R. J. Gurney, L. P. Simmonds |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 3, no. 1 ; Nr. 3, no. 1, S.15-30 |
| Datensatznummer |
250000752
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| Publikation (Nr.) |
 copernicus.org/hess-3-15-1999.pdf |
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| Zusammenfassung |
| Expressions for the upwelling and downwelling fluxes of
optical and thermal radiation between soil, vegetation and the sky are derived, under
certain simple assumptions. These are that interception of radiation by the vegetation is
a purely geometric effect, while scattering is isotropic, with a strength given by a
single-scattering albedo in the optical part of the spectrum, and by Kirchhoff's Law in
the thermal. The soil is assumed to be a lambertian reflector, also scattering according
to an albedo and Kirchhoff's Law. The model, called RM, conserves energy exactly. As part
of a SVAT, it is driven by measured insolation instead of radiation, with little increase
in computational cost and number of parameters. |
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