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Comparison of Structure Parameter Scaling Expressions with Turbulence Closure Model Predictions
Publisher: American Meteorological Society
Abstract: The convective boundary-layer scaling expressions presented by Wyngaard and LeMone (1980) are compared with predictions from a turbulence closure model. We first examine a model experiment involving a clear-air, convectively ...
The Generation, Turbulent Transfer and Deposition of the Sea-Salt Aerosol
Publisher: American Meteorological Society
Abstract: An atmospheric boundary layer (ABL) model is used to address problems involving the generation, turbulent transport, and deposition of giant sized (1?25 ?m) sea-salt aerosol. The surface aerosol generation rate is taken ...
Diurnal Winds Near the Martian Polar Caps
Publisher: American Meteorological Society
Abstract: Large, diurnally varying surface temperature gradients occur at the polar cap periphery during Martian spring and summer. A primitive equation numerical model having grid points lying in the meridional plane is developed ...
Refractive Index Structure Parameters: Time-Dependent Calculations Using a Numerical Boundary-Layer Model
Publisher: American Meteorological Society
Abstract: A second-moment turbulence closure model is used to investigate the make-up of the refractive structure parameter Cn2 for acoustic, optical and microwave radiation. For these different forms of radiation, Wesely (1976) ...
The Moist Boundary Layer with a Higher Order Turbulence Closure Model
Publisher: American Meteorological Society
Abstract: A one-dimensional higher order turbulence closure model is used to investigate moisture structure within the diurnally varying planetary boundary layer. The diurnal character of the moist boundary layer as a whole and a ...
Temperature and Humidity Effects on Refractive Index Fluctuations in Upper Regions of the Convective Boundary Layer
Publisher: American Meteorological Society
Abstract: Here we illustrate a method which readily permits determination of the relative contributions of the individual temperature-humidity structure terms to total Cn2 within the uppermost region of the clear, convective boundary ...
Summertime Marine Refractivity Conditions along Coastal California
Publisher: American Meteorological Society
Abstract: Large vertical gradients of temperature and moisture, which are not uncommon at the top of the marine atmospheric boundary layer (MABL), yield strong gradients in microwave refractivity that can result in anomalous ...
The Dynamics of Wave Clouds Upwind of Coastal Orography
Publisher: American Meteorological Society
Abstract: The Naval Research Laboratory?s Coupled Ocean?Atmosphere Mesoscale Prediction System (COAMPS) is used in conjunction with satellite observations and data from the Coastal Waves 1996 experiment to investigate the dynamics ...
A Vertically Nested Regional Numerical Weather Prediction Model with Second-Order Closure Physics
Publisher: American Meteorological Society
Abstract: The model we describe involves a unique strategy in which a high vertical resolution grid is nested within the coarse vertical resolution grid of a regional numerical weather prediction (NWP) model. Physics computations ...
The Summertime Low-Level Jet and Marine Boundary Layer Structure along the California Coast
Publisher: American Meteorological Society
Abstract: This paper examines the strong, summertime northerly low-level jet (LLJ) that frequently exists along the California coast. The persistent synoptic-scale pressure distribution (North Pacific high to the west, thermal low ...
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