Results 261 to 270 of about 2,055,953 (299)
Some of the next articles are maybe not open access.
Turbulence structure in the planetary boundary layer
Boundary-Layer Meteorology, 1973This review of the last three years of progress in the understanding of wind profiles and the structure of turbulence in the planetary boundary layer is divided into three parts. The first part, by N. E. Busch, deals with the atmospheric surface layer below 30 m.
N. E. Busch, H. Tennekes, H. A. Panofsky
openaire +1 more source
The surface roughness and planetary boundary layer
pure and applied geophysics, 1980Applications of the entrainment process to layers at the boundary, which meet the self similarity requirements of the logarithmic profile, have been studied. By accepting that turbulence has dominating scales related in scale length to the height above the surface, a layer structure is postulated wherein exchange is rapid enough to keep the layers ...
openaire +1 more source
Lectures on the Planetary Boundary Layer
1983There have been a few such workshops and short courses on aspects of boundary-layer meteorology over the past decade, so that a lecturer today must consider carefully where to start. I have decided to try to bring a contemporary view to my lectures, which means I will not be able to cover some older and now well-understood topics.
openaire +1 more source
Chaos and “Bursting” in the Planetary Boundary Layer
Journal of Applied Meteorology, 1993Abstract A theoretical study of the intermittent breakdowns of the planetary boundary layer (PBL) has been carried out using a one-dimensional, “flat” terrain, PBL model of the type originally developed by A.K. Blackadar. It was found that the turbulent burst effects predominate in the lowest tens of meters of the PBL where an alternation between ...
openaire +1 more source
On the Depth of the Equatorial Planetary Boundary Layer
Journal of the Atmospheric Sciences, 1973Abstract The solutions of the linear equatorial boundary layer are evaluated and found to be dependent on both the depth of the modelled boundary layer and the mode of symmetry about the equator. The inclusion of the frictional effect at levels higher than the usually assumed 1-km boundary layer depth is crucial to the concentration of convergence ...
openaire +2 more sources
Lecture Notes on The Planetary Boundary Layer
2016This set of lecture notes introduces the dynamics, statistics, clouds, and models of the planetary boundary layer (PBL). The author prepared the notes for graduate classes while on sabbatical leave at the Department of Atmospheric Science at Colorado State University in 1994 and 1998 and the Department of Atmospheric and Oceanic Sciences, University of
openaire +1 more source
THE RICHARDSON NUMBER IN THE PLANETARY BOUNDARY LAYER
1966Abstract : Determination of the stability regime is a basic approach in any investigation of atmospheric turbulence. The establishment of stability criteria in the boundary layer is usually accomplished by use of the nondimensional Richardson number. The computation of accurate Richardson numbers is shown to be adversely affected by a number of factors
openaire +1 more source
Numerical Modeling of the Planetary Boundary Layer
1983As an introduction, arguments are given to express the general need for numerical modeling of the planetary boundary layer. The various types of models are defined in relation with their ability to represent the processes taking place in the atmosphere, going from the most realistic to the simplest ones.
openaire +1 more source
The resistance law for stably stratified atmospheric planetary boundary layers
Quarterly Journal of the Royal Meteorological Society, 2021Sergej Zilitinkevich, Evgeny Kadantsev
exaly