Actions for Prognostic atmospheric and dispersion modeling in the vicinity of Rocky Flats Plant [electronic resource].

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Prognostic atmospheric and dispersion modeling in the vicinity of Rocky Flats Plant [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1995.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
6 pages : digital, PDF file
Additional Creators
Pacific Northwest Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A multiscale four-dimensional data assimilation technique is incorporated into a mesoscale model and evaluated using meteorological and tracer data collected during the Atmospheric Studies in Complex Terrain (ASCOT) field experiment in the winter of 1991. The mesoscale model is used to predict the interaction of synoptically-driven flows and small-scale circulations influenced by terrain along the Front Range in Colorado in the vicinity of the Rocky Flats Plant for four nocturnal periods during the ASCOT field experiment. Data assimilation is used to create dynamically consistent analysis fields based on the mesoscale forecasts and the special asynoptic data taken during this experiment. The wind and turbulence quantities produced by the mesoscale model are then used to determine the dispersion of a tracer released from the Rocky Flats Plant for each evening. The mesoscale model is able to qualitatively predict the mesobeta-scale drainage flows from the Front Range into the South Platte River basin; however, the largest forecast errors occurred in a region immediately adjacent to the foothills. As expected, the current data assimilation technique reduced the overall errors in the atmospheric and dispersion calculations while the model generated realistic small-scale circulations not resolved by the data. Still, the model did not capture the shallow surface drainage flows just east of the Rocky Flats Plant for two of the evenings during the field experiment.
Report Numbers
E 1.99:pnl-sa--25632
E 1.99: conf-950430--7
conf-950430--7
pnl-sa--25632
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
04/01/1995.
"pnl-sa--25632"
" conf-950430--7"
"DE95014193"
5. ANS topical meeting on emergency preparedness and response, Savannah, GA (United States), 18-21 Apr 1995.
Fast, J.D.
Funding Information
AC06-76RL01830
AC09-89SR18035
View MARC record | catkey: 14142036