On the use of large-eddy simulation time data coarsening for dispersion forecasting in the SILAM atmospheric composition model

Autor: A I Varentsov, V M Stepanenko, E V Mortikov, A V Debolskiy, R D Kouznetsov, M Sofiev
Přispěvatelé: Ilmatieteen laitos, Finnish Meteorological Institute
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Popis: The paper presents the results of one-way coupling of a large eddy simulation model and an atmospheric composition and diffusion complex SILAM. This study investigates a possibility of large eddy simulation time data coarsening (filtering) for use in SILAM for microscale calculations. Experiments with scalar tracers with a limited lifetime are carried out under conditions of convective boundary layer. A comparison between the calculations with filtered and nonfiltered data demonstrate that time data coarsening is possible without a significant loss in accuracy for tracers whose lifetime is much longer than the coarsening scale and the timestep of the filtered data.
Databáze: OpenAIRE