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| Titel |
Validating the MYSTIC three-dimensional radiative transfer model with observations from the complex topography of Arizona's Meteor Crater |
| VerfasserIn |
B. Mayer, S. W. Hoch, C. D. Whiteman |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 10, no. 18 ; Nr. 10, no. 18 (2010-09-16), S.8685-8696 |
| Datensatznummer |
250008776
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| Publikation (Nr.) |
 copernicus.org/acp-10-8685-2010.pdf |
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| Zusammenfassung |
| The MYSTIC three-dimensional Monte-Carlo radiative transfer model has
been extended to simulate solar and thermal irradiances with
a rigorous consideration of topography. Forward as well as backward
Monte Carlo simulations are possible for arbitrarily oriented surfaces
and we demonstrate that the backward Monte Carlo technique is superior
to the forward method for applications involving topography, by
greatly reducing the computational demands. MYSTIC is used to simulate
the short- and longwave radiation fields during a clear day and night
in and around Arizona's Meteor Crater, a bowl-shaped, 165-m-deep basin
with a diameter of 1200 m. The simulations are made over a 4 by 4 km2
domain using a 10-m horizontal resolution digital elevation model and
meteorological input data collected during the METCRAX (Meteor Crater
Experiment) field experiment in 2006. Irradiance (or radiative flux)
measurements at multiple locations inside the crater are then used to
evaluate the simulations. MYSTIC is shown to realistically model the
complex interactions between topography and the radiative field,
resolving the effects of terrain shading, terrain exposure, and
longwave surface emissions. The effects of surface temperature
variations and of temperature stratification within the crater
atmosphere on the near-surface longwave irradiance are then evaluated
with additional simulations. |
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