๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

A numerical study of the nocturnal atmospheric boundary layer

โœ Scribed by Yves Delage

Publisher
John Wiley and Sons
Year
1974
Tongue
English
Weight
617 KB
Volume
100
Category
Article
ISSN
0035-9009

No coin nor oath required. For personal study only.

โœฆ Synopsis

Abstract

The evolution of the structure of the atmospheric boundary layer during the cooling phase of the diurnal cycle is studied with the help of a oneโ€dimensional numerical model. The model uses a turbulent energy equation for the determination of the eddy exchange coefficients, which also involve the local value of the Moninโ€Obukhov length. The surface temperature is prescribed as a function of time and the geostrophic wind is held constant. Results are presented in nondimensional form and cover a wide range of possible values for the external parameters. After several hours of cooling the inversion layer is found to reach a maximum depth, which depends strongly upon the magnitude of the geostrophic wind and, to a lesser extent, on the cooling rate of the ground surface.

๐Ÿ“œ SIMILAR VOLUMES

A numerical model study of the structure
A numerical model study of the structure and similarity scaling of the nocturnal boundary layer (NBL)
โœ A. Lacser; S. P. S. Arya ๐Ÿ“‚ Article ๐Ÿ“… 1986 ๐Ÿ› Springer ๐ŸŒ English โš– 814 KB

A one-dimensional numerical model based on the equations of mean motion and turbulent kinetic energy (TKE), with Delage's (1974) mixing-length parameterization has been used to simulate the mean and turbulent structure ofthe evolving stably stratified nocturnal boundary layer (NBL). The model also i

A study of multiple stable layers in the
A study of multiple stable layers in the nocturnal lower atmosphere
โœ Li Xing-Sheng; J. E. Gaynor; J. C. Kaimal ๐Ÿ“‚ Article ๐Ÿ“… 1983 ๐Ÿ› Springer ๐ŸŒ English โš– 848 KB

The structure of nocturnal inversions in the first 300 m of the atmosphere is analyzed using observational data from the Boulder Atmospheric Observatory (BAO) from March through June 1981. The temperature profiles show more than one inversion layer 41% of the time during the observational period. Th

An observational study of the structure
An observational study of the structure of the nocturnal boundary layer
โœ L. Mahrt; R. C. Heald; D. H. Lenschow; B. B. Stankov; IB Troen ๐Ÿ“‚ Article ๐Ÿ“… 1979 ๐Ÿ› Springer ๐ŸŒ English โš– 952 KB

In an effort to describe the basic vertical structure of the nocturnal boundary layer, observations from four experiments are analyzed. During the night, the depth of significant cooling appears to increase with time while the depth of the turbulence and height of the low level wind maximum tend to

A two-dimensional numerical study of hor
A two-dimensional numerical study of horizontal roll vortices in the neutral atmospheric boundary layer
โœ P. J. Mason; R. I. Sykes ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 1020 KB

## Abstract The dynamics of largeโ€scale, horizontal roll vortices in the neutral planetary boundary layer are investigated by means of a twoโ€dimensional numerical model. The rolls are assumed to be twoโ€dimensional and are calculated explicitly, while smallโ€scale turbulence is parametrized by a mixi