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Large‐Eddy simulations of the neutral‐static‐stability planetary boundary layer
Author(s) -
Mason P. J.,
Thomson D. J.
Publication year - 1987
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49711347602
Subject(s) - eddy , parametrization (atmospheric modeling) , boundary layer , mechanics , turbulence , rotation (mathematics) , geology , flow (mathematics) , physics , planetary boundary layer , large eddy simulation , geometry , classical mechanics , mathematics , optics , radiative transfer
A series of large‐eddy simulations of the neutral‐static‐stability planetary boundary layer has been conducted. the simulations differ in the size of the computational domain and the scales represented by the subgrid‐scale turbulence parametrization. the flow eddies are always irregular but show an elongation in the direction of the local velocity shear vector. the dominant horizontal scales of the eddies increase with height in the boundary layer and become much larger than the boundary layer depth. All of this wide range of scales of motion is important in determining the gross boundary layer characteristics. the larger scales of motion have dynamics influenced by both the vertical and horizontal components of the earth's rotation. the flow statistics are compared with previous simulations and with high‐order closure models.