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Autoren: Simon, Helge
Sinsel, Tim
Bruse, Michael
Titel: Advances in simulating radiative transfer in complex environments
Online-Publikationsdatum: 15-Nov-2021
Sprache des Dokuments: Englisch
Zusammenfassung/Abstract: Accurate simulation of radiative transfer is a very important aspect in climate modeling. For microclimate models in particular, it is not only important to simulate primary but also secondary radiative fluxes in great detail, i.e., emitted longwave and reflected shortwave radiation. As there are always limitations regarding computational effort and memory, these radiative fluxes are commonly implemented using simplified approaches. To overcome these simplifications and, thus, increase modeling accuracy, a new radiation scheme called indexed view sphere was introduced into the microclimate model ENVI-met. This new scheme actually accounts for radiative contributions of objects that are seen by each grid cell. In order to evaluate the advantages of the new scheme, it is compared against the formerly used averaged view factor scheme. The comparison in a complex realistic urban environment demonstrated that the indexed view sphere scheme improved the accuracy and plausibility of modeling radiative fluxes. It, however, yields an increased demand of memory to store the view facets for each cell. The higher accuracy in simulating secondary radiative fluxes should, however, overturn this shortcoming for most studies, as more detailed knowledge of local microclimatic conditions in general and eventually thermal comfort can be gained.
DDC-Sachgruppe: 550 Geowissenschaften
550 Earth sciences
Veröffentlichende Institution: Johannes Gutenberg-Universität Mainz
Organisationseinheit: FB 09 Chemie, Pharmazie u. Geowissensch.
Veröffentlichungsort: Mainz
Version: Published version
Publikationstyp: Zeitschriftenaufsatz
Nutzungsrechte: CC BY
Informationen zu den Nutzungsrechten:
Zeitschrift: Applied Sciences
Seitenzahl oder Artikelnummer: 5449
Verlag: MDPI
Verlagsort: Basel
Erscheinungsdatum: 2021
ISSN: 2076-3417
URL der Originalveröffentlichung:
DOI der Originalveröffentlichung: 10.3390/app11125449
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