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RISEvaluation of the NCEP Mesoscale Eta Model Convective Boundary Layer for Air Quality Applications
Publisher: American Meteorological Society
Abstract: Atmospheric models are a basic tool for understanding the processes that produce poor air quality, for predicting air quality problems, and for evaluating proposed solutions. At the base of many air quality models is a ...
Bifurcations from Stationary to Periodic Solutions in a Low-Order Model of Forced, Dissipative Barotropic Flow
Publisher: American Meteorological Society
Abstract: A truncated spectral model of the forced, dissipative, barotropic vorticity equation on a cyclic ?-plane is examined for multiple stationary and periodic solutions. External forcing on one scale of the motion provides a ...
A Numerical Investigation of the Severe Thunderstorm Gust Front
Publisher: American Meteorological Society
Abstract: The structure of the thunderstorm gust front is investigated by a nonhydrostatic, two-dimensional (xz/) numerical model. In the model, which is dry, the production of negatively buoyant air by evaporation is parameterized ...
The Effect of Large-Scale Atmospheric Uncertainty on Streamflow Predictability
Publisher: American Meteorological Society
Abstract: Hydrological processes are strongly coupled with atmospheric processes related, for example, to precipitation and temperature, and a coupled atmosphere?land surface system is required for a meaningful hydrological forecast. ...
Untitled
Publisher: American Meteorological Society
Abstract: AbstractThis study examines the performance of the NCEP Global Forecast System (GFS) surface layer parameterization scheme for strongly stable conditions over land in which turbulence is weak or even disappears because of ...
A Comparison between Snow Cover Products Derived from Visible and Microwave Satellite Observation
Publisher: American Meteorological Society
Abstract: A comparison between two satellite-derived snow cover products demonstrates the strengths and weakness of each procedure. The current NESDIS operational product is subjectively derived from visible satellite imagery. The ...
The Operational Eta Model Precipitation and Surface Hydrologic Cycle of the Columbia and Colorado Basins
Publisher: American Meteorological Society
Abstract: The surface hydrology of the United States? western basins is investigated using the National Centers for Environmental Prediction operational Eta Model forecasts. During recent years the model has been subject to changes ...
Summer-Season Forecast Experiments with the NCEP Climate Forecast System Using Different Land Models and Different Initial Land States
Publisher: American Meteorological Society
Abstract: o examine the impact from land model upgrades and different land initializations on the National Centers for Environmental Prediction (NCEP)?s Climate Forecast System (CFS), extensive T126 CFS experiments are carried out ...
On the Nature of Soil Moisture in Land Surface Models
Publisher: American Meteorological Society
Abstract: The soil moisture state simulated by a land surface model is a highly model-dependent quantity, meaning that the direct transfer of one model?s soil moisture into another can lead to a fundamental, and potentially detrimental, ...
Dependence of Land Surface Albedo on Solar Zenith Angle: Observations and Model Parameterization
Publisher: American Meteorological Society
Abstract: This study examines the dependence of surface albedo on solar zenith angle (SZA) over snow-free land surfaces using the intensive observations of surface shortwave fluxes made by the U.S. Department of Energy Atmospheric ...