Forest Fires

Contributors Preface Acknowledgments 1 Strengthening Fire Ecology's Roots I. Introduction II. Processes III. Transfer Rates and Budgets IV. Examples of Traditional vs. Proposed Approach References2 Flames I. Introduction II. Basic Aspects of Combustion in Forest Fires III. Temperature, Velocity, Species Concentration, and Flame Height IV Premixed and Diffusion Flames V. Extinction of Diffusion Flames VI. Diffusion Flames and Scaling Analysis VII. Spreading Flames VIII. Structure of Flame Base IX. Conclusions Notation References3 Combustion Chemistry and Smoke I. Introduction II. Fuel Chemistry and Combustion III. Smoke Production IV. Minimizing Smoke Production V. Conclusions References4 Water Relations of Forest Fuels I. Introduction II. Forest Fuels III. Fuel Moisture Relationships IV. Moisture Content Estimation Notation Additional Reading References5 Wildland Fire Spread Models I. Introduction II. Head Fire Rate of Spread (Physical Principles and their Mathematical Embodiment) III. Head Fire Rate of Spread: Australia IV. Head Fire Rate of Spread: United States V. Head Fire Rate of Spread: Canada VI. Smoldering VII. Whole Fire Modeling-Fire Shape Notation References6 Wind-Aided Fire Spread I. Introduction II. Laboratory-Scale Setup III. Fire Spread Model IV. Preliminary Testing of the Model V. Test Results for the Effect of Wind Speed and Fuel Loading on the Rate of Fire Spread VI. Conclusions Notation Recommended Reading References 7 Fire Plumes I. Introduction II. Modeling Fire Temperature Maxima III. Plumes above Fires in a Cross Wind Notation References8 Coupling Atmospheric and Fire Models I. Introduction II. Vorticity Dynamics in a Fire III. Coupling between Atmosphere and Fire IV. The Elements of Fire Modeling V. Modeling the Atmosphere VI. The Coupled Fire-Atmosphere Modeling Approach VII. Idealized Studies of Wildfire Behavior VIII. Infrared Observations of Fires IX. Conclusions and Future Work Appendix I. Circulation and Vorticity Appendix II. Development of Vertical Rotation in a Frictionless Fluid Appendix III. Generation of Vertical Motion in Rotating Convective Cells Notation References9 Surface Energy Budget and Fuel Moisture I. Introduction II. Evapotranspiration Processes and the Meteorological Controlling Factors III. Estimation of Potential Evapotranspiration Rates IV. Functional Dependence of PET and AET V. Characteristics of PET VI. Near-Surface Environment VII. Models of Land-Surface Interactions VIII. Remote Sensing of the Surface Energy Budget IX. Fire Weather Rating Systems Notation Suggested Reading List References10 Climate, Weather, and Area Burned I. Introduction II. Weather and Area Burned-Synoptic Surface Features III. Weather and Area Burned-Upper Air Features IV. Teleconnections V. Future Warming and Area Burned VI. Summary References11 Lightning and Forest Fires I. Introduction II. Lightning III. Previous Studies of Lightning-Initiated Fire IV. Interaction between Lightning and Fuels V. How Ignition Occurs VI. Ignition Experiments with Real Forest Fuels VII. Generating Models for Operational Use VIII. Smoke, Lightning, and Cloud Microphysics IX. Global Implications of Lightning Ignition Characteristics X. Conclusion References12 Statistical Inference for Historical Fire Frequency Using the Spatial Mosaic I. Introduction II. Graphical Analysis III. Statistical Inference with Prespecified Change Points IV. The Efficiency of Sample vs. Map Data V. Determining Epochs of Constant Fire Frequency References13 Duff Consumption I. Introduction II.