Journal of Applied Meteorology: Recent submissions
Now showing items 4381-4400 of 6019
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Estimating Longwave Net Radiation at Sea Surface from the Special Sensor Microwave/Imager (SSM/I)
(American Meteorological Society, 1997)A neural network is used to calculate the longwave net radiation (Lnet) at the sea surface from measurements of the Special Sensor Microwave/Imager (SSM/I). The neural network applied in this study is able to account largely ... -
Daytime Boundary Layer Evolution in a Deep Valley. Part II: Numerical Simulation of the Cross-Valley Circulation
(American Meteorological Society, 1997)The thermally induced circulation in a deep valley during fair weather and weak synoptic wind conditions is simulated by a two-dimensional numerical model, in order to investigate the daytime planetary boundary layer ... -
Comparison of Four Different Stomatal Resistance Schemes Using FIFE Observations
(American Meteorological Society, 1997)Stomatal resistance (Rs) calculation has a major impact on the surface energy partitioning that influences diverse boundary layer processes. Present operational limited area or mesoscale models have the Jarvis-type ... -
The Diurnal and Seasonal Cycles of Wind-Borne Dust over Africa North of the Equator
(American Meteorological Society, 1997)This article presents a study of the diurnal and seasonal cycles of dust over North Africa, using surface visibility as an indicator of dust. The diurnal cycle shows a reduction of visibility during the daytime hours in ... -
Toward Improving Microphysical Parameterizations of Conversion Processes
(American Meteorological Society, 1997)Prognostic equations are proposed for use in gridpoint models for the purpose of providing Lagrangian information without the need for computing Lagrangian trajectories. The information provided by the proposed methods ... -
Vertical Velocities in a Thunderstorm Gust Front and Outflow
(American Meteorological Society, 1997)Continuous vertically pointing measurements of a thunderstorm outflow, including its gust front, were obtained with a Doppler radar near New Salem, North Dakota. The measurements provide a high-resolution depiction of the ... -
A Numerical Forecasting System for the Prediction of Slippery Roads
(American Meteorological Society, 1997)A numerical forecasting system is presented for automatic prediction of slippery road conditions at road station sites in Denmark. The system is based on a road conditions model forced by input from an operational atmospheric ... -
Comments on “A Reexamination of the Formation of Exhaust Condensation Trails by Jet Aircraft”
(American Meteorological Society, 1997)No abstract available. -
Estimation of the Aerosol Phase Function in Backscatter from Simultaneous Satellite and Sun-Photometer Measurements
(American Meteorological Society, 1997)The backscatter part of the aerosol phase function PA(?), where ? is the scattering angle, is difficult to measure from the ground. Experimental data for ? > 120° are not reported in the literature. Customarily, PA(?) is ... -
Momentum, Heat, and Moisture Budgets of the Katabatic Wind Layer over a Midlatitude Glacier in Summer
(American Meteorological Society, 1997)In the summer of 1994, meteorological measurements were performed on Pasterze Glacier in the eastern Alps. One of the most remarkable observations concerning the observed climate was the persistent glacier wind. On the ... -
Measurements of Raindrop Size Distributions over the Pacific Warm Pool and Implications for Z–R Relations
(American Meteorological Society, 1997)Raindrop images obtained on research flights of the NCAR Electra aircraft in the Tropical Oceans Global Atmosphere Coupled Ocean?Atmosphere Response Experiment (TOGA COARE) are analyzed. The drop size distributions, based ... -
Estimating Convective Atmospheric Boundary Layer Depth from Microwave Radar Imagery of the Sea Surface
(American Meteorological Society, 1997)Kilometer-scale mottling seen on real and synthetic aperture radar imagery of the sea surface can be linked to the presence of microscale cellular convection (thermals) spanning the marine atmospheric boundary layer. In ... -
Some Practical Notes on the Parameter kB−1 for Sparse Vegetation
(American Meteorological Society, 1997)This paper deals with the parameter kB?1, the logarithm of the ratio between momentum and heat roughness length, of sparsely vegetated surfaces and bare soil. The bare soil surface is included as a reference, since it is ... -
Comparative Evaluation of Eddy Exchange Coefficients for Strong and Weak Wind Stable Boundary Layer Modeling
(American Meteorological Society, 1997)Five local K-closure formulations and a TKE closure were incorporated in a one-dimensional version of the Pielke?s model, and a comparative evaluation of the closure schemes was made for strong and weak wind stable boundary ... -
Modeling Utility Load and Temperature Relationships for Use with Long-Lead Forecasts
(American Meteorological Society, 1997)Models relating system-wide average temperature to total system load were developed for the Virginia Power and Duke Power service areas in the southeastern United States. Daily data for the 1985?91 period were used. The ... -
Effect of Land-Use Pattern on the Development of Low-Level Jets
(American Meteorological Society, 1997)Land-use patterns are a major factor that causes land surface heterogeneities, which in turn influence the development of mesoscale circulations. In the present study, effects of land-use patterns on the formation and ... -
A Comparative Study of High-Order, Quasi-Conservative, Semi-Lagrangian, and Eulerian Advection Schemes
(American Meteorological Society, 1997)Quasi-conservative high-order semi-Lagrangian advection schemes are compared with several positive-definite Eulerian schemes in flux form, including Bott?s scheme. In this study, the conventional equipartition method is ... -
CART Regression Models for Predicting UV Radiation at the Ground in the Presence of Cloud and Other Environmental Factors
(American Meteorological Society, 1997)The goal was to build models for predicting ground-level biologically weighted ultraviolet radiation (UV index, shortened to UV here) that would not require substantial execution time in weather and climate models and yet ... -
Surface Radiative Fluxes in Sub-Sahel Africa
(American Meteorological Society, 1997)This paper reports results of observations of radiative fluxes measured in sub-Sahel Africa during a 2-yr period (1992?94). Shortwave radiation in the solar spectrum (0.2?4.0 ?m), photosynthetically active radiation (0.4?0.7 ... -
Direct Solar Spectral Irradiance Measurements and Updated Simple Transmittance Models
(American Meteorological Society, 1997)A set of 509 direct solar irradiance spectra, carefully measured over one year, is checked against spectral irradiances computed from five updated transmittance models. The wavelengths under investigation range from 290 ...