Radiative Transfer Model 3.0 integrated into the PALM model system 6.0

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Krč, P.; Resler, J.; Sühring, M.; Schubert, S.; Salim, M.H. et al.: Radiative Transfer Model 3.0 integrated into the PALM model system 6.0. In: Geoscientific Model Development 14 (2021), Nr. 5, S. 3095-3120. DOI: https://doi.org/10.5194/gmd-14-3095-2021

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The Radiative Transfer Model (RTM) is an explicitly resolved three-dimensional multi-reflection radiation model integrated into the PALM modelling system. It is responsible for modelling complex radiative interactions within the urban canopy. It represents a key component in modelling energy transfer inside the urban layer and consequently PALM's ability to provide explicit simulations of the urban canopy at metre-scale resolution. This paper presents RTM version 3.0, which is integrated into the PALM modelling system version 6.0. This version of RTM has been substantially improved over previous versions. A more realistic representation is enabled by the newly simulated processes, e.g. the interaction of longwave radiation with the plant canopy, evapotranspiration and latent heat flux, calculation of mean radiant temperature, and bidirectional interaction with the radiation forcing model. The new version also features novel discretization schemes and algorithms, namely the angular discretization and the azimuthal ray tracing, which offer significantly improved scalability and computational efficiency, enabling larger parallel simulations. It has been successfully tested on a realistic urban scenario with a horizontal size of over 6 million grid points using 8192 parallel processes. © 2021 Pavel Krč et al.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2021
Appears in Collections:Fakultät für Mathematik und Physik

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pos. country downloads
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1 image of flag of Germany Germany 11 39.29%
2 image of flag of United States United States 9 32.14%
3 image of flag of China China 4 14.29%
4 image of flag of Vietnam Vietnam 2 7.14%
5 image of flag of Taiwan Taiwan 1 3.57%
6 image of flag of Iran, Islamic Republic of Iran, Islamic Republic of 1 3.57%

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