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Numerical Experiment on the Variation of Atmospheric Circulation due to Wild Fire
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 Title & Authors
Numerical Experiment on the Variation of Atmospheric Circulation due to Wild Fire
Lee, Hwa-Woon; Tak, Sung-Hoon; Lee, Soon-Hwan;
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In order to clarify the impact of wildfire and its thermal forcing on atmospheric wind and temperature patterns, several numerical experiments were carried out using three dimensional atmospheric dynamic model WRF with wildfire parametrization module SFIRE. Since wind can accelerate fire spread speed, the moving speed of fireline is faster than its initial values, and the fireline tends to move the northeast, because of the wind direction and absolute vorticity conservation law associated with driving force induced by terrain. In comparison with non-fire case, the hydraulic jump that often occurs over downwind side of mountain became weak due to huge heat flux originated by surface wildfire and wind pattern over downwind side of mountain tends to vary asymmetrically with time passing. Therefore temporal variation of wind pattern should be catched to prevent the risk of widfire.
WRF-FIRE;Fireline;Absolute vorticity;Hydraulic jump;Heat flux;
 Cited by
산림 미기상 해석을 위한 최적모델 개발,이석준;최용한;정재희;원명수;임규호;

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