A new low threshold bi-directional wind vane and its potential impact on unplanned atmospheric release prediction
- Westinghouse Savannah River Co., Aiken, SC (United States). Savannah River Technology Center
At the Savannah River Site, the Environmental Transport Group (ETG) maintains and develops a comprehensive meteorological monitoring program which employs bi-directional wind vanes (bivanes) for the measurement of horizontal and vertical wind direction and turbulence. Wind data collected near and below instrument starting thresholds under stable nighttime conditions with these bivanes can result in artificially large standard deviations of horizontal wind direction ({sigma}A). In one hypothetical case, downwind concentrations could be underestimated by a factor of 40 by using artificially high {sigma}A data in a Gaussian dispersion model. In an effort to improve low wind speed measurements of wind direction, a Cooperative Research and Development Agreement (CRADA) between Met One Instruments and the Westinghouse Savannah River Company (WSRC) has been created to improve the dynamic performance of the Met One Model 1585 Bi-Directional Wind Vane.
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 422911
- Report Number(s):
- CONF-960127-; TRN: 97:002388
- Resource Relation:
- Conference: 9. joint American Meteorological Society/Air and Waste Management Association conference on applications of air pollution meteorology, Atlanta, GA (United States), 28 Jan - 2 Feb 1996; Other Information: PBD: [1996]; Related Information: Is Part Of Ninth joint conference on applications of air pollution meteorology with A and WMA; PB: 672 p.
- Country of Publication:
- United States
- Language:
- English
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