Author: Kyle Allan Glazewski
Publisher:
ISBN:
Category : Air quality management
Languages : en
Pages : 100
Book Description
Integration of GIS and Smoke Plume Dispersion Modeling for Prescribed Burns at Grand Forks Air Force Base
Author: Kyle Allan Glazewski
Publisher:
ISBN:
Category : Air quality management
Languages : en
Pages : 100
Book Description
Publisher:
ISBN:
Category : Air quality management
Languages : en
Pages : 100
Book Description
User Assessment of Smoke-dispersion Models for Wildland Biomass Burning
Smoke Dispersion Model for Prescribed Burning
Author: James A. Pharo
Publisher:
ISBN:
Category : Prescribed burning
Languages : en
Pages : 8
Book Description
Publisher:
ISBN:
Category : Prescribed burning
Languages : en
Pages : 8
Book Description
An Atmospheric Dispersion Index for Prescribed Burning
Author: Leonidas G. Lavdas
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 44
Book Description
Publisher:
ISBN:
Category : Air
Languages : en
Pages : 44
Book Description
Guide to Geography Programs in the Americas
The Smoke-fireplume Model
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
Land managers are increasingly implementing strategies that employ the use of fire in prescribed burns to sustain ecosystems and plan to sustain the rate of increase in its use over the next five years. In planning and executing expanded use of fire in wildland treatment it is important to estimate the human health and safety consequences, property damage, and the extent of visibility degradation from the resulting conflagration-pyrolysis gases, soot and smoke generated during flaming, smoldering and/or glowing fires. Traditional approaches have often employed the analysis of weather observations and forecasts to determine whether a prescribed burn will affect populations, property, or protected Class I areas. However, the complexity of the problem lends itself to advanced PC-based models that are simple to use for both calculating the emissions from the burning of wildland fuels and the downwind dispersion of smoke and other products of pyrolysis, distillation, and/or fuels combustion. These models will need to address the effects of residual smoldering combustion, including plume dynamics and optical effects. In this paper, we discuss a suite of tools that can be applied for analyzing dispersion. These tools include the dispersion models FIREPLUME and SMOKE, together with the meteorological preprocessor SEBMET.
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
Land managers are increasingly implementing strategies that employ the use of fire in prescribed burns to sustain ecosystems and plan to sustain the rate of increase in its use over the next five years. In planning and executing expanded use of fire in wildland treatment it is important to estimate the human health and safety consequences, property damage, and the extent of visibility degradation from the resulting conflagration-pyrolysis gases, soot and smoke generated during flaming, smoldering and/or glowing fires. Traditional approaches have often employed the analysis of weather observations and forecasts to determine whether a prescribed burn will affect populations, property, or protected Class I areas. However, the complexity of the problem lends itself to advanced PC-based models that are simple to use for both calculating the emissions from the burning of wildland fuels and the downwind dispersion of smoke and other products of pyrolysis, distillation, and/or fuels combustion. These models will need to address the effects of residual smoldering combustion, including plume dynamics and optical effects. In this paper, we discuss a suite of tools that can be applied for analyzing dispersion. These tools include the dispersion models FIREPLUME and SMOKE, together with the meteorological preprocessor SEBMET.
First Order Fire Effects Model
Author: Elizabeth D. Reinhardt
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 106
Book Description
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 106
Book Description
Development of Input Data Layers for the FARSITE Fire Growth Model for the Selway-Bitterroot Wilderness Complex, USA
Author: Robert E. Keane
Publisher:
ISBN:
Category : Forest fire forecasting
Languages : en
Pages : 72
Book Description
Fuel and vegetation spatial data layers required by the spatially explicit fire growth model FARSITE were developed for all langs in and around the Selway-Bitterroot Wilderness Area in Idaho and Montana. Satellite imagery and terrain modeling were used to create the three base vegetation spatial data layers of potential vegetation, cover type, and structural stage. Fire behavior fuel models and crown characteristics were assigned to combinations of base layer categories on these maps by local fire managers, ecologists, and existing data. FARSITE fuels maps are used to simulate growth of prescribed natural fires in the wilderness area, aiding managers in the planning and allocation of resources. An extensive accuracy assessment of all maps indicated fuels layers are about 60 percent accurate. This methodology was designed to be replicated for other areas.
Publisher:
ISBN:
Category : Forest fire forecasting
Languages : en
Pages : 72
Book Description
Fuel and vegetation spatial data layers required by the spatially explicit fire growth model FARSITE were developed for all langs in and around the Selway-Bitterroot Wilderness Area in Idaho and Montana. Satellite imagery and terrain modeling were used to create the three base vegetation spatial data layers of potential vegetation, cover type, and structural stage. Fire behavior fuel models and crown characteristics were assigned to combinations of base layer categories on these maps by local fire managers, ecologists, and existing data. FARSITE fuels maps are used to simulate growth of prescribed natural fires in the wilderness area, aiding managers in the planning and allocation of resources. An extensive accuracy assessment of all maps indicated fuels layers are about 60 percent accurate. This methodology was designed to be replicated for other areas.
Characterization of Smoke Plume Emissions and Dynamics from Prescribed and Wildland Fires Using High-resolution Field Observations and a Coupled Fire-atmosphere Model
Author: Kara M. Yedinak
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Smoke plumes associated with wildland fires are difficult to characterize due to the non-linear behavior of the variables involved. Plume chemistry is largely modeled using emission factors to represent the relative trace gas and aerosol species emitted. Plume dynamics are modeled based on assumptions of plume vertical distribution and atmospheric dispersion. In the studies presented here, near and in-source measurements of emissions from prescribed burns are used to characterize the variability of emission factors from low-intensity fires. Emissions factors were found to be in the same range as those from other, similar studies in the literature and it appears that the emission factors may be sensitive to small differences in surface conditions such as fuel moisture, surface wind speed, and the ratio of live to dead fuels. We also used two coupled fire atmosphere models, which utilize the Weather Research and Forecasting (WRF) model called WRF-Fire and WRF-Sfire, to investigate the role that atmospheric stability plays in influencing plume rise as well as developing a technique for assessing plume rise and the vertical distribution of pollutants in regional air quality models. Plume heights, as well as rate of growth of the fire, were found to be sensitive to atmospheric stability while fire rate of spread was not. The plume center-of-mass technique was demonstrated to work well but has slightly low estimates compared to observations.
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Smoke plumes associated with wildland fires are difficult to characterize due to the non-linear behavior of the variables involved. Plume chemistry is largely modeled using emission factors to represent the relative trace gas and aerosol species emitted. Plume dynamics are modeled based on assumptions of plume vertical distribution and atmospheric dispersion. In the studies presented here, near and in-source measurements of emissions from prescribed burns are used to characterize the variability of emission factors from low-intensity fires. Emissions factors were found to be in the same range as those from other, similar studies in the literature and it appears that the emission factors may be sensitive to small differences in surface conditions such as fuel moisture, surface wind speed, and the ratio of live to dead fuels. We also used two coupled fire atmosphere models, which utilize the Weather Research and Forecasting (WRF) model called WRF-Fire and WRF-Sfire, to investigate the role that atmospheric stability plays in influencing plume rise as well as developing a technique for assessing plume rise and the vertical distribution of pollutants in regional air quality models. Plume heights, as well as rate of growth of the fire, were found to be sensitive to atmospheric stability while fire rate of spread was not. The plume center-of-mass technique was demonstrated to work well but has slightly low estimates compared to observations.
Using Fire Weather Data in Prescribed Fire Planning
Author: Roland William Furman
Publisher:
ISBN:
Category : Fire weather
Languages : en
Pages : 16
Book Description
Publisher:
ISBN:
Category : Fire weather
Languages : en
Pages : 16
Book Description