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RISSensitivity of a Trajectory Model to the Spatial and Temporal Resolution of the Meteorological Data during CAPTEX
Publisher: American Meteorological Society
Abstract: Some recent analyses of long-range transport and dispersion indicated conflicting results regarding the improvement in trajectory calculations when either the spatial or temporal density of the meteorological data are ...
Simulated and Observed Influence of the Nocturnal Urban Heat Island on the Local Wind Field
Publisher: American Meteorological Society
Abstract: A three-dimensional primative equation model was used to simulate the low-level wind field, given the urban heat island as the lower temperature boundary condition. The specification of the average heat island bypassed the ...
Trajectory Optimization for Balloon Flight Planning
Publisher: American Meteorological Society
Abstract: The recent solo transpacific balloon flight was used as a test case to evaluate multiple trajectory techniques to select different pathways based upon potential variations in balloon altitudes. Altitude changes between 3 ...
The Use of Global and Mesoscale Meteorological Model Data to Predict the Transport and Dispersion of Tracer Plumes over Washington, D.C.
Publisher: American Meteorological Society
Abstract: The data from a yearlong tracer dispersion experiment over Washington, D.C., in 1984 were used to evaluate Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) dispersion model calculations using coarse global ...
The Accuracy of Trajectories during ANATEX Calculated Using Dynamic Model Analyses Versus Rawinsonde Observations
Publisher: American Meteorological Society
Abstract: Aircraft tracer measurements all made within 300 km of the release sites during, the Across North America Experiment (ANATEX) provided 30 separate trials to evaluate the error of back-trajectory calculations. The trajectory ...
Evaluation of an Ensemble Dispersion Calculation
Publisher: American Meteorological Society
Abstract: A Lagrangian transport and dispersion model was modified to generate multiple simulations from a single meteorological dataset. Each member of the simulation was computed by assuming a ±1-gridpoint shift in the horizontal ...
The Calculation of Low-Level Winds from the Archieved Data of a Regional Primitive Equation Forecast Model
Publisher: American Meteorological Society
Abstract: Meteorological data fields from NOAA's Nested Grid Model (NGM) were archived at 2-hour intervals from initialization to the 12-hour forecast time, two forecasts per day, for January, February, and March 1987. The NGM ...
Inline Coupling of WRF–HYSPLIT: Model Development and Evaluation Using Tracer Experiments
Publisher: American Meteorological Society
Abstract: he Hybrid Single-Particle Lagrangian Integrated Trajectory model (HYSPLIT), a Lagrangian dispersion model, has been coupled (inline) to the the Weather Research and Forecasting (WRF) Model meteorological model in such a ...
Horizontal Dispersion Parameters for Long-Range Transport Modeling
Publisher: American Meteorological Society
Abstract: A computer model using actual meteorological data is developed to simulate the effects of wind shear on an instantaneous pollutant puff. The effect of wind shear on dispersion is obtained by subdividing, during the nocturnal ...
Modeling the CAPTEX Vertical Tracer Concentration Profiles
Publisher: American Meteorological Society
Abstract: Perfluorocarbon tracer concentration profiles measured by aircraft 600?900 km downwind of the release locations during CAPTEX are discussed and compared with some model results. In general, the concentrations decreased ...