Excerpt from Reexamination of Rothermel's Fire Spread Equations in No-Wind and No-Slope Conditions We used heuristic reasoning and statistical because it works types of argument to reach conclusions and to generate empirical equations to describe events. For example, our procedure for forming the expectation value for spread rate as the product of other primary expectation values is not vigorously legitimate because those expectation values were not derived independently. Thus, this exposition cannot be labeled as good physical the ory; knowledge of wildfire phenomena has not yet reached that stage. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Wildland fires have an irreplaceable role in sustaining many of our forests, shrublands and grasslands. They can be used as controlled burns or occur as free-burning wildfires, and can sometimes be dangerous and destructive to fauna, human communities and natural resources. Through scientific understanding of their behaviour, we can develop the tools to reliably use and manage fires across landscapes in ways that are compatible with the constraints of modern society while benefiting the ecosystems. The science of wildland fire is incomplete, however. Even the simplest fire behaviours – how fast they spread, how long they burn and how large they get – arise from a dynamical system of physical processes interacting in unexplored ways with heterogeneous biological, ecological and meteorological factors across many scales of time and space. The physics of heat transfer, combustion and ignition, for example, operate in all fires at millimetre and millisecond scales but wildfires can become conflagrations that burn for months and exceed millions of hectares. Wildland Fire Behaviour: Dynamics, Principles and Processes examines what is known and unknown about wildfire behaviours. The authors introduce fire as a dynamical system along with traditional steady-state concepts. They then break down the system into its primary physical components, describe how they depend upon environmental factors, and explore system dynamics by constructing and exercising a nonlinear model. The limits of modelling and knowledge are discussed throughout but emphasised by review of large fire behaviours. Advancing knowledge of fire behaviours will require a multidisciplinary approach and rely on quality measurements from experimental research, as covered in the final chapters.

Fire is pivotal to the functioning of ecosystems in Australia, affecting the distribution and abundance of the continent's unique and highly diverse range of plants and animals. Conservation of this natural biodiversity therefore requires a good understanding of scientific processes involved in the action of fire on the landscape. This book provides an up-to-date synthesis of current knowledge in this area and its application in contemporary land management. Central to the discussion is an exploration of the concept of the fire regime and its interactions with biodiversity.

Fire in the environment: scientific rationale and summary of results of the Dahlen workhop., Emissions from the combustion process in vegetation. Dynamics and modeling of vegetation fires: observations . Emissions measurements from vegetation fires: a comparative evaluation of methodes and results. Satellite remote sensig of fires: potential and limitation. Modeling the influence of fires on atmospheric chemistry. Effect of on global radiation budget through aerosol. Effect of fires on global radiation budget though aerosol and cloud properties. Climate change-fire interactions at the global scale: prediction and limitations of methods. Case study of atmospheric measurements in Brasil: aerosol emissions from Amazon basin fire. Biomass burning in Africa: an overview of its impact on atmospheric chemistry. Paleoecology of fire. Nutrient and organic matter dynamics in tropical ecosystems. Fire regimes and ecosystem dinamics. Keeper of the flame: a survey of anthropogenic fire. Historical biogeography of fire: circumpolar taiga. Historical biogeography of fire in tempetate and mediterranean ecosystems. Historical biogeography of fire: tropical and subtropical. Fire management: principles and option in the forested and Savanna regions of the world. Group report: quantification of fire characteristics from local to global scales. Group report: what is the impact of fires on atmosperic chemistry, climate, and biogeochemical cycles?. Group report: impacts of fires on ecosystems. Group report: the role of humans in shaping fire regimes and ecosystem properties.