Advances in Simulating Radiative Transfer in Complex Environments
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 al...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-06-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/12/5449 |
| _version_ | 1797530369226964992 |
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| author | Helge Simon Tim Sinsel Michael Bruse |
| author_facet | Helge Simon Tim Sinsel Michael Bruse |
| author_sort | Helge Simon |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T10:28:55Z |
| format | Article |
| id | doaj.art-06bdfe279bc946949393bc416cd07892 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T10:28:55Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-06bdfe279bc946949393bc416cd078922023-11-21T23:48:04ZengMDPI AGApplied Sciences2076-34172021-06-011112544910.3390/app11125449Advances in Simulating Radiative Transfer in Complex EnvironmentsHelge Simon0Tim Sinsel1Michael Bruse2Department of Geography, Johannes Gutenberg University Mainz, 55099 Mainz, GermanyDepartment of Geography, Johannes Gutenberg University Mainz, 55099 Mainz, GermanyDepartment of Geography, Johannes Gutenberg University Mainz, 55099 Mainz, GermanyAccurate 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.https://www.mdpi.com/2076-3417/11/12/5449ENVI-metradiation schememicroclimatenumerical modelingthermal comfortindexed view sphere |
| spellingShingle | Helge Simon Tim Sinsel Michael Bruse Advances in Simulating Radiative Transfer in Complex Environments Applied Sciences ENVI-met radiation scheme microclimate numerical modeling thermal comfort indexed view sphere |
| title | Advances in Simulating Radiative Transfer in Complex Environments |
| title_full | Advances in Simulating Radiative Transfer in Complex Environments |
| title_fullStr | Advances in Simulating Radiative Transfer in Complex Environments |
| title_full_unstemmed | Advances in Simulating Radiative Transfer in Complex Environments |
| title_short | Advances in Simulating Radiative Transfer in Complex Environments |
| title_sort | advances in simulating radiative transfer in complex environments |
| topic | ENVI-met radiation scheme microclimate numerical modeling thermal comfort indexed view sphere |
| url | https://www.mdpi.com/2076-3417/11/12/5449 |
| work_keys_str_mv | AT helgesimon advancesinsimulatingradiativetransferincomplexenvironments AT timsinsel advancesinsimulatingradiativetransferincomplexenvironments AT michaelbruse advancesinsimulatingradiativetransferincomplexenvironments |