WIT Press


Real Time Risk Assessment For Atmospheric Dispersion Of Accidentally Released Air Pollutants From Nuclear Power Plants

Price

Free (open access)

Paper DOI

10.2495/RISK000481

Volume

45

Pages

9

Published

2000

Size

957 kb

Author(s)

W.K. Graber and F. Gassmann

Abstract

Wind field patterns in an area of 30 by 30 krrf over the Swiss Plateau between the Alps and the Jura were measured with 22 temporary meteorological stations and 2 SODARs during four months in 1997. Hourly averages from this high resolution network were combined with meteorological information from routine stations and from a high resolution weather prediction model. A cluster analysis for this data-set lead to 12 different wind field classes with a high separation quality. It is demonstrated, that an on-line acquisition of meteorological data from routine stations only (after removing the temporary stations) can be used to diagnose the recent wind field class with a probability of 96 % to hit the correct wind field class. This diagnosis reveals wind fields with a very high

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