On-Line Wind Field Calculations for Routine and Emergency Response Applications
The task at hand was to generate a complete terrain-corrected three-dimensional wind field for a coastal area that has very rough terrain from real-time input data. This wind field could then be used for routine wind flow applications as well as for emergency reponse. This meant that the wind flow model that we chose not only had to be accurate, but also had to be quick. The three dimensional wind field then had to be displayed in a way that would be easily interpreted by anyone. A maximum response time of 5 to 10 minutes was thought to be acceptable because the model was to run on a microcomputer.
As complete as possible with regard to the spatial and temporal variations of the winds.
Available on a continuing, up-to-the minute basis.
Based on all available wind observations and terrain data.
Displayed so that the output would be easily understood
In addition to the above items, the wind information should be in a form that can be used directly by computer models of atmospheric transport and diffusion, so that trajectories and concentrations can be calculated quickly.
The special software described here has evolved from our work with similar problems of wind field generation in a different context [Bhumralkar et al (1980)]. The earlier work led to the development of efficient computer codes for generating potential flow wind fields that include terrain effects, and that require relatively sparse meteorological inputs.
KeywordsWind Field Wind Component Complex Terrain Geostrophic Wind National Weather Service
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- Ludwig, F. L., 1985: “Inclusion of Buoyancy Forces and Energy Considerations in Mass-Consistant Wind Interpolation Schemes,” paper prepared for Stanford University Civil Engineering Department, Stanford, California.Google Scholar