Analysis of the Long-term Meteorological Data at Kori Nuclear Power Plant for Environmental Impact Assessment

For the past four years, relatively clear regular patterns were found in terms of wind and atmospheric stability. Wind direction, which is a very essential component for atmospheric dispersion, shows a strong seasonal dependency. We analyzed the long-term meteorological data collected since 1997 at the Kori nuclear power plant. The annual wind tendency shows irregular patterns before 2009. However, for the past four years, clear regular patterns are found in terms of the wind and atmospheric stabilities. Especially, the main wind direction, which is a very essential component for an atmospheric dispersion, shows a strong dependency on the season. During spring and summer, south-west and south-southwest winds are the main winds, whereas north-northeast wind dominates during fall and winter. The annual wind is strongly affected by that of winter