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http://dx.doi.org/10.5322/JESI.2013.22.2.173

Numerical Experiment on the Variation of Atmospheric Circulation due to Wild Fire  

Lee, Hwa-Woon (Division of Earth Environmental System, Pusan National University)
Tak, Sung-Hoon (Division of Earth Environmental System, Pusan National University)
Lee, Soon-Hwan (Institude of Environmental Studies, Pusan National University)
Publication Information
Journal of Environmental Science International / v.22, no.2, 2013 , pp. 173-185 More about this Journal
Abstract
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.
Keywords
WRF-FIRE; Fireline; Absolute vorticity; Hydraulic jump; Heat flux;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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