Glossary, Abbreviations and Acronyms - Wildland Fuel Fundamentals and Applications - page 180

Glossary, Abbreviations and Acronyms 1
Biomass. Dead and live organic material.
Burnable canopy biomass. Biomass consisting of all canopy fuel particles less
than 3 mm in diameter.
Canopy bulk density (CBD). The amount of burnable canopy biomass in a unit
volume of space.
Canopy base height (CBH). The height above the ground at which the canopy
bulk density first exceeds a threshold value.
Canopy height (CH). The height above the ground at which the canopy bulk
density last exceeds a threshold value.
Classification. A quantitative description of fuelbeds to simplify fuel attribute
inputs for fire software applications.
Computational fluid dynamics (CFD). Term used to describe the next generation
of fire models that simulate fire behavior using conservation of mass and
momentum theory coupled with a computational fluid dynamics approach.
Coarse woody debris (CWD). Downed dead woody fuel particles that are greater
than 8 cm in diameter. CWD does not include snags in this topic. CWD is often
synonymous with logs or 1000 h woody fuels.
Digital elevation model (DEM). A raster data layer of elevation above mean sea
level assigned to each pixel in the raster.
Duff. Layer of decomposing organic materials and particles that are not readily iden-
tifiable lying just below the litter layer and immediately above the mineral soil
Endogenous. Originating inside the area of concern.
Exogenous. Originating outside of the area of concern.
Fine woody debris (FWD). The downed, dead woody fuel particles that are less
than 8 cm in diameter.
Fire behavior fuel model (FBFM). A set of input fuel parameters for fire behavior
models that have been adjusted to match observed fire behavior.
1 This is a list of important terms, acronyms, and abbreviations used in this topic. Definitions are
given as used in this topic even though some of the acronyms have multiple definitions in the
literature.