title: Wide-area assessment of topographical and meteorological effects on sound propagation by time-domain modeling.
abstract: Noise mapping with a three-dimensional finite-difference time-domain (FDTD) model over larger areas suffers from its high computational demand. This study shows that an FDTD model in combination with a meteorological model can be used for at least qualitative assessments of topographical and meteorological effects on sound propagation in domains of even some kilometers extension. This is achieved by restricting the acoustical simulations to low frequencies which allow the use of a rather large numerical grid spacing.
authors: Institut für Physik der Atmosphäre, Deutsches Zentrum für Luft- und Raumfahrt, Oberpfaffenhofen, 82234 Wessling, Germany. dietrich.heimann@dlr.de
authors: Dietrich
authors: D
authors: Heimann
mesh_terms: D000162:Acoustics; D003198:Computer Simulation; D005843:Geography; D008685:Meteorological Concepts; D008962:Models, Theoretical; D009038:Motion; D009716:Numerical Analysis, Computer-Assisted; D013016:Sound; D013018:Sound Spectrography; D013997:Time Factors