Type
Topic
Region
Year
Displaying 1 - 25 of 67
Unusually high levels of
Person:
Year: 2007
Type: Document
Source: TTRS
Topic(s): Fire Ecology, Climate, Emissions and Smoke, Models
Region(s): International
Keywords: air quality, biomass, biomass burning, broadcast burning, cropland fires, Europe, fire management, forest management, pollen, pollution, remote sensing, Russia, statistical analysis, United Kingdom, wildfires, wind, atmospheric dispersion modelling, forest fires, long-range transport, pollution
Recent studies have shown that emissions of mercury (Hg), a hazardous air pollutant, from fires can be significant. However, to date, these emissions have not been well-quantified for the entire United States. Daily emissions of Hg from fires in the lower 48 states of the United…
Person:
Year: 2007
Type: Document
Source: TTRS
Topic(s): Fire Ecology, Emissions and Smoke, Models, Prescribed Fire
Region(s): Alaska, Great Basin, Northwest
Keywords: air quality, boreal forests, coniferous forests, ecosystem dynamics, fire management, grasslands, Hg - mercury, smoke management, statistical analysis, toxicity, wildfires
The post-harvest burning of agricultural fields is commonly used to dispose of crop residue and provide other desired services such as pest control. Despite careful regulation of burning, smoke plumes from field burning in the Pacific Northwest commonly degrade air quality,…
Person:
Year: 2007
Type: Document
Source: TTRS
Topic(s): Climate, Emissions and Smoke, Fuels, Models, Prescribed Fire
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: agriculture, air quality, biomass, broadcast burning, cropland fires, croplands, fire management, fuel moisture, fuel types, hydrocarbons, Idaho, pest control, range management, season of fire, smoke behavior, smoke management, Washington, wind, CALPUFF, PM2.5, biomass burning, air quality model, ClearSky
Fire is one of the key disturbances affecting trembling aspen (Populus tremuloides Michx.) forest ecosystems within western Canadian wildlands, including Elk Island National Park in central Alberta, Canada. Although prescribed fire is a tool available to modify aspen forests, a…
Person:
Year: 2007
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Fire Ecology, Fuels, Models, Prescribed Fire, Weather
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, International, National
Keywords: Alberta, Canada, combustion, coniferous forests, disturbance, droughts, duff, ecosystem dynamics, experimental fires, fire intensity, fire management, forest management, fuel moisture, ground fires, ignition, moisture, national parks, plant communities, plant growth, Populus, Populus tremuloides, rate of spread, sampling, smoke management, statistical analysis, wildfires, FWI - Canadian Forest Fire Weather Index System, ground fire, subsurface fire
The re-ignition potential of partially burnt wood-based embers was investigated theoretically by studying their extinction characteristics. An adaptation of Semenov's thermal explosion theory was used in conjunction with a linear stability analysis to determine the critical…
Person:
Year: 2007
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Models, Safety
Region(s): International
Keywords: adaptation, Araucaria cunninghami, Australia, brush fires, char, combustion, Eucalyptus maculata, fire intensity, fire management, fire size, firebrands, heat, ignition, particulates, Pinus radiata, rate of spread, statistical analysis, temperature, wildfires, wind, wood, flame spread, mathematical modelling
A risk assessment framework was used to assess the risks of forest fire smoke (ffs) to the exposed communities, critical infrastructures and the environment. The present work is focused on the planning and problem formulation phases of this risk assessment procedure.…
Person:
Year: 2007
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Fire Ecology, Hazard and Risk, Models, Safety
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: air quality, chemical compounds, fire management, firefighting personnel, gases, hydrocarbons, particulates, smoke behavior, smoke effects, smoke management, statistical analysis, toxicity, wildfires, wind, forest fire smoke, data integration, field chemical data, risk assessment, firefighters
From the text ... 'Grass fires, although not as intense as forest fires, present a major threat to life and property during periods of drought in the Great Plains of the United States. Recently, major wildland grass fires in Texas burned nearly 1.6 million acres and destroyed…
Person:
Year: 2007
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Ecology, Fuels, Models, Prescribed Fire
Region(s): Southern
Keywords: Andropogon gerardii, carbon dioxide, crown fires, fire damage (property), fire injuries (animals), fire injuries (plants), fire management, fire size, fuel management, fuel moisture, grass fires, grasses, grasslands, Great Plains, livestock, moisture, mortality, prairies, radiation, rate of spread, Schizachyrium scoparium, soil temperature, temperature, Texas, Tridens, wildfires, wind
We describe emission-transmission measurements performed at different heights in a flame from a cylindrical forest fuel burner, using a camera operating in the thermal infrared (7.5-13 µm). The forest fuel burner was made of a cylindrical wire mesh basket filled with a forest…
Person:
Year: 2007
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Ecology, Fuels, Models
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: combustion, fire management, flame length, fuel management, gases, heat, laboratory fires, needles, particulates, photography, Pinus pinaster, radiation, smoke management, soot, statistical analysis, temperature, wildfires, forest fires, IR thermography, radiation, soot
The main purpose of this paper is to present a fire behaviour system, developed to estimate fire progression, smoke dispersion and visibility impairment, at a local scale, and to evaluate its performance by comparing results with measurements from the Gestosa 2004 experimental…
Person:
Year: 2007
Type: Document
Source: TTRS
Topic(s): Climate, Emissions and Smoke, Fire Behavior, Fire Ecology, Models, Weather
Region(s): International
Keywords: air quality, Europe, fire growth, fire management, fire size, particulates, pollution, Portugal, rate of spread, smoke effects, smoke management, statistical analysis, topography, wildfires
Aim Globally, most landscape burning occurs in the tropical savanna biome, where fire is a characteristic of the annual dry season. In northern Australia there is uncertainty about how the frequency and timing of dry season fires have changed in the transition from Aboriginal to…
Person:
Year: 2007
Type: Document
Source: TTRS
Topic(s): Climate, Emissions and Smoke, Fire History, Fire Occurrence, Models, Prescribed Fire
Region(s): International
Keywords: aborigines, air quality, Australia, biomass, broadcast burning, disturbance, fire frequency, fire management, land management, Northern Territory of Australia, particulates, pollution, presettlement fires, savannas, season of fire, tropical regions, Aboriginal fire management, air pollution, airport visibility, Australian summer monsoon, biomass burning, deep moist convection, historical ecology, Tropical Savanna
There is some evidence that the initiation of warm rain is suppressed in clouds over regions with vegetation fires. Thus, the ice phase becomes important as another possibility to initiate precipitation. Numerical simulations were performed to investigate heterogeneous drop…
Person:
Year: 2007
Type: Document
Source: TTRS
Topic(s): Emissions and Smoke, Models, Prescribed Fire
Region(s): International
Keywords: aerosols, air quality, biomass, biomass burning, broadcast burning, Europe, fire management, Germany, moisture, particulates, precipitation, soil management, statistical analysis, biomass burning, heterogeneous drop freezing, ice nuclei, mixed-phase cloud
In a burn of 5-year-old secondary forest cleared for agriculture in Roraima, Brazil, carbon partitioning was measured for above-ground portions of both secondary forest (regrowth) and the remains of original forest, felled and burned six years previously. Above-ground dry weight…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Emissions and Smoke, Fire Effects, Fuels, Models, Prescribed Fire, Restoration and Rehabilitation
Region(s): International
Keywords: charcoal, agriculture, deforestation, global warming, Brazil, biomass burning, greenhouse gas, secondary forests, carbon dioxide, axis, biomass, broadcast burning, C - carbon, CO2 - carbon dioxide, cutting, diameter classes, fire management, forest management, climate change, litter, palms, post-fire recovery, sampling, second growth forests, tropical forest, vines
Fire is the dominant disturbance in forest ecosystems across Canada and Alaska, and has important implications for forest ecosystems, terrestrial carbon dioxide emissions and the forestry industry. Large fire activity had increased in Canadian and Alaskan forests during the last…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Occurrence, Hazard and Risk, Models, Weather
Region(s): Alaska, International
Keywords: boreal forest, Canada, fire, drought, carbon dioxide, computer program, disturbance, ecosystem dynamics, fire danger rating, fire frequency, fire management, fire regimes, fire size, flammability, forest management, moisture, season of fire, wildfires
The main purpose of this paper is to present a fire behaviour system, developed to estimate fire progression, smoke dispersion and visibility impairment, at a local scale, and to evaluate its performance by comparing results with measurements from the Gestosa 2004 experimental…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Models
Region(s): International
Keywords: pollutant concentrations, smoke dispersion, Portugal, DISPERFIRE, FireStation
We describe emission-transmission measurements performed at different heights in a flame from a cylindrical forest fuel burner, using a camera operating in the thermal infrared (7.5-13 µm). The forest fuel burner was made of a cylindrical wire mesh basket filled with a forest…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Models
Region(s): International
Keywords: Mediterranean, radiation, soot, forest fires, Pinus pinaster, IR thermography
Historical evidence suggests that great wildfires burning in the Lake States and Canada can affect atmospheric conditions several hundred miles away (Smith 1950; Wexler 1950). Several 'dark' or 'yellow' days, as such events are commonly called, have been recorded, often with…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Aquatic, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire History, Intelligence, Models
Region(s): Eastern
Keywords: fire scars, wildfires, New England, dendrochronology, fire case histories, drought, fire injuries (plants), fire management, Pinus resinosa, precipitation, smoke management, wildfires
Australia is among the most fire-prone of continents. While national fire management policy is focused on irregular and comparatively smaller fires in densely settled southern Australia, this comprehensive assessment of continental-scale fire patterning (1997-2005) derived from…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Communications, Emissions and Smoke, Fire Occurrence, Fuels, Intelligence, Mapping, Models, Monitoring and Inventory, Prescribed Fire
Region(s): International
Keywords: remote sensing, AVHRR - Advanced Very High Resolution Radiometer, fire mapping, greenhouse gas emissions, satellite imagery, Australia, biomass burning, savanna burning, aborigines, air quality, biomass, broadcast burning, distribution, elevation, fire size, fire management, fire frequency, forest management, fuel types, climate change, grasslands, human caused fires, ignition, land use, lightning, lightning caused fires, precipitation, savannas, shrublands, vegetation surveys
The efficiency of fuel breaks installed in wildland-urban interfaces to reduce fire hazard depends strongly on the conditions of spread (rate of spread, flame height) of a surface fire through the shrub on the ground and also on the possibility of a transition for this fire from…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Prevention, Fuels, Hazard and Risk, Models, Wildland-Urban Interface (WUI)
Region(s): International
Keywords: Mediterranean shrublands, physical models, wildfire modeling, Brachypodium ramosum, Brachypodium spp., crown fires, decomposition, energy, Europe, fire hazard, fire hazard reduction, fire management, flame length, France, fuel breaks, fuel loading, fuel management, heat, ignition, Mediterranean habitats, overstory, Pinus spp., Pinus halepensis, Quercus spp., Quercus coccifera , radiation, rate of spread, shrublands, soot, statistical analysis, surface fires, surface fuels, temperature, trees, understory vegetation, wildfires, wind
The research and development (R&D) arm of the Forest Service, U. S. Department of Agriculture (USDA), with approximately 550 researchers in a range of biological, physical, and social science fields, seeks to better understand and describe the complex mechanisms at work in…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Administration, Climate, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire History, Fire Prevention, Fuels, Intelligence, Mapping, Models, Monitoring and Inventory, Outreach, Planning, Prescribed Fire, Restoration and Rehabilitation, Weather
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: Forest Service, research, research accomplishment report
This conference was attended by nearly 450 Forest Service earth scientists representing hydrology, soil science, geology, and air. In addition to active members of the earth science professions, many retired scientists also attended and participated. These 60 peer-reviewed…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Climate, Communications, Emissions and Smoke, Fire Ecology, Fire Effects, Fuels, Intelligence, Mapping, Models, Outreach, Prescribed Fire, Restoration and Rehabilitation, Aquatic
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: conferences, earth sciences
The Rocky Mountain Research Station has a long and celebrated legacy of conducting relevant natural resources research throughout the Interior West and beyond. Land managers and planners regularly rely upon our science to help make wise resource decisions. Our niche among…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Administration, Climate, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire History, Fuels, Intelligence, Mapping, Models, Monitoring and Inventory, Outreach, Planning, Prescribed Fire, Restoration and Rehabilitation
Region(s): Great Basin, Northern Rockies, Rocky Mountain, Southwest
Keywords: Forest Service, research, Rocky Mountain Research Station
Predictions of smoke impacts on communities and ecosystems are currently being made by the BlueSky smoke forecast system; providing real-time predictions of surface smoke concentrations from prescribed fire, wildfire, and agricultural burn activities. Currently operational in…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Models, Planning
Region(s): Northwest
Keywords: air quality, BlueSky Modeling Framework, smoke impacts, smoke modeling
The Georgia Forestry Commission has developed an Internet-based, user friendly version of a USDA Forest Service smoke dispersion model called 'VSMOKE.' The program provides an easy to use method to quickly evaluate what areas will likely be impacted by smoke from a wild or…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects, Models
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: air quality, fire management, smoke dispersion, VSMOKE
Wildland fuels have been accumulating in the United States during at least the past half-century due to wildland fire management practices and policies. The additional fuels contribute to intense fire behavior, increase the costs of wildland fire control, and contribute to the…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects, Fuels, Models
Region(s): Southern
Keywords: BlueSkyRAINS, fire management, wildland fuels, BlueSky Modeling Framework
Computational tools have been developed at the National Institute of Standards and Technology (NIST) for modeling fire spread and smoke transport. These tools have been adapted to address fire scenarios that occur in the wildland urban interface (WUI) over kilometer-scale…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Fire Effects, Models, Wildland-Urban Interface (WUI)
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: fire management, fire spread, smoke transport, Smokeview