All are based on daily surface
weather variables that are related to the ignitability, spread rate and the control difficulty of an initiating wildland
fire31 and they are closely related to the magnitude and extent of
fire activity32, 33.
Changing climatic
variables relevant to the function and distribution of plants include increasing CO2 concentrations, increasing global temperatures, altered precipitation patterns, and changes in the pattern of «extreme»
weather events such as cyclones,
fires or storms.