Crown Fraction Burned (CFB)
Crown Fraction Burned (CFB) : As used in the context of the Canadian Forest Fire Behaviour Prediction System, CFB is a measure of the degree of potential crown fuel consumption exp ressed as a proportion of the total number of tree crowns and as such constitutes an indication of the probable type of fire activity to be experienced over a burned area for fuel types that are susceptible to crowning. < 10% Surface Fire; 10% - 89% Intermittent Fire; > 90%Continuous Crown Fire. Note: Forest Fire
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