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|This article has been peer reviewed and accepted for publication. It is in production and has not been edited, so may differ from the final published form.
|A comparison of three approaches for simulating fine-scale surface winds in support of wildland fire management:
Part II â an exploratory study of the impact of simulated winds on fire growth simulations|
The impact of fine resolution wind simulations on fire growth simulations is explored. The wind models are: 1) a wind field consisting of constant speed and direction applied everywhere over the area of interest; 2) a tool based on the solution of the conservation of mass only (termed mass-conserving model); and 3) a tool based on a solution of conservation of mass and momentum (termed momentum-conserving model). Fire simulations use the FARSITE fire simulation system to simulate fire growth for one hypothetical fire and two actual wildfires. The momentum-conserving model produced fire perimeters that most closely matched the observed fire spread, followed by the mass-conserving model and then the uniform winds. The comparisons suggest that momentum-conserving and mass-conserving models can reduce the sensitivity of fire growth simulations to input wind direction, which is advantageous to fire growth modelers. The mass-conserving and momentum-conserving wind models may be useful for operational use as decision support tools in wildland fire management, prescribed fire planning, smoke dispersion modeling, and firefighter and public safety.
|WF12090 Accepted 09 May 2014|
|© CSIRO 2014|