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PALM-USM v1.0: A New Urban Surface Model Integrated into the PALM Large-eddy Simulation Model
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SYSNO ASEP 0478793 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název PALM-USM v1.0: A New Urban Surface Model Integrated into the PALM Large-eddy Simulation Model Tvůrce(i) Resler, Jaroslav (UIVT-O) SAI, RID, ORCID
Krč, Pavel (UIVT-O) SAI, RID, ORCID
Belda, Michal (UIVT-O) RID, ORCID
Juruš, Pavel (UIVT-O) SAI, RID
Benešová, N. (CZ)
Lopata, J. (CZ)
Vlček, O. (CZ)
Damašková, D. (CZ)
Eben, Kryštof (UIVT-O) SAI, RID, ORCID
Derbek, P. (CZ)
Maronga, P. (DE)
Kanani-Sühring, F. (DE)Zdroj.dok. Geoscientific Model Development. - : Copernicus GmbH - ISSN 1991-959X
Roč. 10, č. 10 (2017), s. 3635-3659Poč.str. 25 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova urban modelling ; PALM ; LES ; surface energy balance ; radiative transfer ; model evaluation ; infrared camera Vědní obor RIV DG - Vědy o atmosféře, meteorologie Obor OECD Meteorology and atmospheric sciences Institucionální podpora UIVT-O - RVO:67985807 UT WOS 000412588500001 EID SCOPUS 85032189825 DOI 10.5194/gmd-10-3635-2017 Anotace Urban areas are an important part of the climate system and many aspects of urban climate have a direct effect on human health and living conditions. This implies the need for a reliable tool for climatology studies that supports urban planning and development strategies. However, a realistic implementation of urban canopy processes still poses a serious challenge for weather and climate modelling for the current generation of numerical models. To address this demand, a new model of energy processes for urban environments was 5 developed as an Urban Surface Model (USM) and integrated as a module into the large-eddy simulation (LES) model PALM. The USM contains a multi-reflection radiation model for short and long wave radiation, calculation of the energy balance on horizontal and vertical impervious surfaces, thermal diffusion in ground, wall and roof materials and anthropogenic heat from transportation. The module also models absorption of radiation by resolved plant canopy (i.e. trees, shrubs). The USM was parallelized using MPI and performance testing demonstrates that the computational costs 10 of the USM are reasonable and the model scales well on typical cluster configurations. The module was fully integrated into PALM and is available via its online repository under GNU General Public License (GPL). The implementation was tested on a summer heat wave episode in the real conditions of a selected Prague crossroad. General patterns of temperature of various surface types (walls, pavement) are in good agreement with observations. The coupled LES-USM system appears to correct the bias found between observations and mesoscale model predictions for the near-surface air temperature. The results, however, 15 show a strong dependence on the prescribed surface and wall material properties. Their exact knowledge is thus essential for the correct prediction of the flow in the urban canopy layer. Pracoviště Ústav informatiky Kontakt Tereza Šírová, sirova@cs.cas.cz, Tel.: 266 053 800 Rok sběru 2018
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