Search
Now showing items 1-10 of 75
A Reevaluation of Two Dispersion Theories
Publisher: American Meteorological Society
Abstract: Three of the atmospheric datasets that were originally used to verity statistical dispersion theory are reevaluated. These datasets are described as well by transilient turbulence theory as by statistical theory over the ...
Wet-Bulb Temperature from Relative Humidity and Air Temperature
Publisher: American Meteorological Society
Abstract: n equation is presented for wet-bulb temperature as a function of air temperature and relative humidity at standard sea level pressure. It was found as an empirical fit using gene-expression programming. This equation is ...
Static Stability—An Update
Publisher: American Meteorological Society
Abstract: Static stability should not be evaluated from the local lapse rate. There is a growing body of observations, such as within portions of mixed layers and forest canopies, showing that the whole sounding should be considered ...
Transilient Turbulence Theory. Part I: The Concept of Eddy-Mixing across Finite Distances
Publisher: American Meteorological Society
Abstract: A first-order turbulence theory is developed that describes eddy-like mixing. Named transilient theory after a Latin word meaning ?leap across? this approach models the turbulent mixing between arrays of points separated ...
A Simple Model for Pollution Dispersion in a Convective Boundary Layer
Publisher: American Meteorological Society
Abstract: A simplified model for dispersion in a convective boundary layer is presented and is used to diagnose crosswind-integrated concentrations, ground-level concentrations, and vertical plume spread over flat terrain for various ...
Alternative Nonlocal Descriptions of Boundary-Layer Evolution
Publisher: American Meteorological Society
Abstract: Two alternative parameterizations for nonlocal turbulence mixing are tested in a 1D boundary-layer model against a dataset from the 1983 Boundary-Layer Experiment (BLX83) in Oklahoma. One method, proposed previously by ...
Integral Scales for the Nocturnal Boundary Layer. Part II: Heat Budget, Transport and Energy Implications
Publisher: American Meteorological Society
Abstract: In Part I, external forcings such as pressure gradient, terrain roughness and imposed cooling were used to forecast the thickness and strength of an exponentially-shaped (ES) nocturnal boundary layer (NBL) temperature ...
A Convective Transport Theory for Surface Fluxes
Publisher: American Meteorological Society
Abstract: For a boundary layer in free convection where turbulent thermal structures communicate information between the surface and the interior of the mixed layer, it is hypothesized that the surface momentum flux can be parameterized ...
Modeling the Downwelling Longwave Radiation over a Groomed Ski Run under Clear Skies
Publisher: American Meteorological Society
Abstract: he surface radiation budget of a groomed ski run is important to ski racing. Variables such as snow-surface temperature and liquid water content depend upon the surface radiation budget and are crucial to preparing fast ...
Integral Scales for the Nocturnal Boundary Layer. Part 1: Empirical Depth Relationships
Publisher: American Meteorological Society
Abstract: The stable-layer thickness h and near-surface potential temperature strength ??s, of the nocturnal boundary layer (NBL) are shown to have a ?background? square-root of time dependence. Superimposed upon this background are ...