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Challenges of constructing and selecting the “perfect” boundary conditions for the large-eddy simulation model PALM
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SYSNO ASEP 0585439 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Challenges of constructing and selecting the “perfect” boundary conditions for the large-eddy simulation model PALM Tvůrce(i) Radović, J. (CZ)
Belda, M. (CZ)
Resler, Jaroslav (UIVT-O) SAI, RID, ORCID
Eben, Kryštof (UIVT-O) SAI, RID, ORCID
Bureš, Martin (UIVT-O) SAI, ORCID
Geletič, Jan (UIVT-O) RID, ORCID, SAI
Krč, Pavel (UIVT-O) SAI, RID, ORCID
Řezníček, Hynek (UIVT-O) ORCID, SAI
Fuka, V. (CZ)Zdroj.dok. Geoscientific Model Development. - : Copernicus GmbH - ISSN 1991-959X
Roč. 17, č. 7 (2024), s. 2901-2927Poč.str. 27 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova large-eddy simulation ; urban climate ; boundary conditions ; sensitivity ; coupling Obor OECD Meteorology and atmospheric sciences CEP TO01000219 GA TA ČR - Technologická agentura ČR Výzkumná infrastruktura e-INFRA CZ II - 90254 - CESNET, zájmové sdružení právnických osob Způsob publikování Open access Institucionální podpora UIVT-O - RVO:67985807 UT WOS 001202919400001 EID SCOPUS 85190765550 DOI https://doi.org/10.5194/gmd-17-2901-2024 Anotace We present the process of and difficulties in acquiring the proper boundary conditions (BCs) for the state-of-the-art large-eddy simulation (LES)-based PALM model system. We use the mesoscale Weather Research and Forecasting (WRF) model as a source of inputs for the PALM preprocessor and investigate the influence of the mesoscale model on the performance of the PALM model. A total of 16 different WRF configurations were used as a proxy for a multi-model ensemble. We developed a technique for selecting suitable sets of BCs, performed PALM model simulations driven by these BCs, and investigated the consequences of selecting a sub-optimal WRF configuration. The procedure was tested for four episodes in different seasons of the year 2019, during which WRF and PALM outputs were evaluated against the atmospheric radiosounding observations. We show that the PALM model outputs are heavily dependent on the imposed BCs and have different responses at different times of the day and in different seasons. We demonstrate that the main driver of errors is the mesoscale model and that the PALM model is capable of attenuating but not fully correcting them. The PALM model attenuates the impact of errors in BCs in wind speed, while for the air temperature, PALM shows variable behavior with respect to driving conditions. This study stresses the importance of high-quality driving BCs and the complexity of the process of their construction and selection. Pracoviště Ústav informatiky Kontakt Tereza Šírová, sirova@cs.cas.cz, Tel.: 266 053 800 Rok sběru 2025 Elektronická adresa https://doi.org/10.5194/gmd-17-2901-2024
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