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    Author(s): David V. Sandberg; Cynthia L. Riccardi; Mark D. Schaaf
    Date: 2007
    Source: Canadian Journal of Forest Research. 37: 2438-2455
    Publication Series: Scientific Journal (JRNL)
    PDF: View PDF  (3.69 MB)

    Description

    Abstract: The Fuel Characteristic Classification System (FCCS) includes equations that calculate energy release and one-dimensional spread rate in quasi-steady-state fires in heterogeneous but spatially uniform wildland fuelbeds, using a reformulation of the widely used Rothermel fire spread model. This reformulation provides an automated means to predict fire behavior under any environmental conditions in any natural, modified, or simultated wildland fuelbed. The formulation may be used to compare potential fire behavior between fuelbeds that differ in time, space, or as a result of management, and provides a means to classify and map fuelbeds based on their expected surface fire behavior under any set of defined environmental conditions (i.e., effective windspeed and fuel moisture content). Model reformulation preserves the basic mathematical framework of the Rothermel fire spread model, reinterprets data from two of the original basic equations in his model, and offers a new conceptual formulation that allows the direct use of inventoried fuel properties instead of stylized fuel models. Alternative methods for calculating the effect of windspeed and fuel moisture, based on more recent literature, are also provided. This reformulation provides a framework for the incremental improvement in quantifying fire behavior parameters in complex fuelbeds and for modeling fire spread.

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    Citation

    Sandberg, David V.; Riccardi, Cynthia L.; Schaaf, Mark D. 2007. Reformulation of Rothermel's wildland fire behaviour model for heterogeneous fuelbeds. Canadian Journal of Forest Research. 37: 2438-2455

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