Type
Topic
Region
Year
Displaying 376 - 400 of 5834
The classification of savanna fires into headfire and backfire types can in theory help in assessing pollutant emissions to the atmosphere via relative apportionment of the amounts of smouldering and flaming combustion occurring, and is also important when assessing a fire's…
Person:
Year: 2005
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Mapping
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: carbon, fire, intensity, radiative energy, global emission budgets
Previous studies of the effects of heating on soil hydrophobicity have been conducted under free availability of oxygen. Under fire, however, soils may be deprived of oxygen due to its consumption at the heat source and inadequate replenishment in the soil. In the present study…
Person:
Year: 2005
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fuels, Monitoring and Inventory
Region(s): International
Keywords: black carbon, hydrophobicity, soil heating, Australia, water repellency, eucalypt, air quality, C - carbon, combustion, eucalyptus, heat, heat effects, hydrology, national parks, New South Wales, nitrogen, oxygen, sclerophyll forests, soil management, soil nutrients, soil organic matter, soil temperature, soils, surface fires, Victoria, water, water repellent soils, wildfires
The effect of high temperatures and smoke on germination was tested on the shrubland Leguminosae species, Adenocarpus lainzii, Cytisus scoparius, Cytisus striatus, Genista berberidea, Genista triacanthos, and Pterospartum tridentatum, which are abundant and widely distributed…
Person:
Year: 2006
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects
Region(s): International
Keywords: wildfire, reproductive behavior, thermal shock, Atlantic shrubland, endemisms, Iberian Peninsula
Fluxes of water vapor, heat, and carbon dioxide associated with a prescribed grass fire were documented quantitatively using a 43-m instrumented flux tower within the burn perimeter and a tethered balloon sounding system immediately downwind of the fire. The measurements…
Person:
Year: 2006
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Monitoring and Inventory, Prescribed Fire
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, International, National
Keywords: grass fire, heat, smoke measurements, CO2 flux, water vapor
The boreal region stores a large proportion of the world's terrestrial carbon (C) and is subject to high-intensity, stand-replacing wildfires that release C and nitrogen (N) stored in biomass and soils through combustion. While severity and extent of fires drives overall…
Person:
Year: 2010
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects, Fuels
Region(s): Alaska
Keywords: boreal forest, carbon, N - nitrogen, organic layer, soil, allometric equations, black spruce, Picea mariana, fuel consumption, adventitious roots
The flammability and combustibility of plant communities are determined by species features related to growth-form, structure and physiology. In some ecosystems, such as the Mediterranean ones, these characteristics may contribute to the existence of fire-prone species. We…
Person:
Year: 2010
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Ecology, Fuels
Region(s): International
Keywords: fire regimes, fuel loading, resprouting, Mediterranean basin, seeder, combustibility, air temperature, combustion, dead fuels, ecosystem dynamics, Spain, fine fuels, fire management, flame length, flammability, fuel management, heavy fuels, histories, leaves, Mediterranean habitats, moisture, physiology, plant communities, post-fire recovery, regeneration, seed dispersal, shrublands, shrubs, temperature, wildfires, woody plants
Vegetation fires produce biomass combustion residues, with color varying from dark black char to white mineral ash. The color-lightness of char and ash combustion residues is a qualitative parameter describing the post-fire condition of burned areas, and has been correlated with…
Person:
Year: 2010
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Effects, Prescribed Fire
Region(s): International
Keywords: biomass combustion, Australia, residues, air quality, ash, biomass, char, combustion, fire intensity, fire management, Northern Territory of Australia, particulates, research, smoke management, statistical analysis, 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
In the Mediterranean basin, fires are a major concern for forest and shrubland ecosystems. We studied flammability, its seasonality and its relationship with leaf moisture and volatile terpene content and emission in the dominant species of a Mediterranean shrubland and forest…
Person:
Year: 2008
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fuels
Region(s): International
Keywords: Mediterranean, Pinus halepensis, Quercus ilex, Arbutus unedo, Cistus albidus, emission and content of volatile compounds, Erica multiflora, Globularia alypum, Phillyrea latifolia, Pistacia lentiscus, Rosmarinus officinalis
Fire managers must consider air-quality impacts when planning prescribed burns or devising wildfire containment strategies. Particulate matter (PM) is the primary pollutant of concern: it is the major component of smoke and has known detrimental influences on human health and…
Person:
Year: 2008
Type: Document
Source: FRAMES
Topic(s): Climate, Emissions and Smoke
Region(s): Southwest
Keywords: wildland fire, air pollution, Arizona, PM - particulate matter
Satellite remotely sensed data of fire disturbance offers important information; however, current methods to study fire severity may need modifications for boreal regions. We assessed the potential of the differenced Normalized Burn Ratio (dNBR) and other spectroscopic indices…
Person:
Year: 2008
Type: Document
Source: FRAMES, TTRS
Topic(s): Communications, Emissions and Smoke, Fire Behavior, Fire Effects, Fire History, Fuels, Intelligence, Mapping, Monitoring and Inventory
Region(s): Alaska
Keywords: black spruce, CBI - composite burn index, Picea mariana, spectroscopic index, air quality, boreal forest, C - carbon, coniferous forests, crown fires, disturbance, fire case histories, elevation, fire intensity, fire management, forest management, ground fires, mortality, organic matter, organic soils, overstory, Picea, remote sensing, soils, topography, wildfires
Although biomass burning of savannas is recognised as a major global source of greenhouse gas emissions, quantification remains problematic with resulting regional emissions estimates often differing markedly. Here we undertake a critical assessment of Australia's National…
Person:
Year: 2009
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fuels, Mapping, Prescribed Fire
Region(s): International
Keywords: fire mapping, Australia, emission factors, fuel loads, burning efficiency, Arnhem Land, National Greenhouse Gas Inventory, Northern Territory of Australia
Central Chile differs from other areas with Mediterranean-type climate by the scarcity of natural wildfires. The Chilean matorral is highly invaded by alien plant species from other Mediterranean zones of the world, where natural, recurrent wildfires have been one of their…
Person:
Year: 2009
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fuels
Region(s): International
Keywords: exotic plants, heat, fuel heterogeneity, Chile, Mediterranean shrublands
This study investigates smoke incursion into urban areas by examining a prescribed burn in central Georgia, USA, on 28 February 2007. Simulations were conducted with a regional modeling framework to understand transport, dispersion, and structure of smoke plumes, the air quality…
Person:
Year: 2009
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Models, Prescribed Fire
Region(s): Southern
Keywords: air quality, dispersion, Georgia, smoke transport, urban air pollution, plume structure
Wildland fire is a global phenomenon, and a result of interactions between climate-weather, fuels and people. Our climate is changing rapidly primarily through the release of greenhouse gases that may have profound and possibly unexpected impacts on global fire activity. The…
Person:
Year: 2009
Type: Document
Source: FRAMES
Topic(s): Climate, Emissions and Smoke, Fire Occurrence, Models, Weather
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: carbon, forest fire, management, area burned, fire activity, intensity, severity, review, season
Outdoor experiments were conducted on a laboratory scale to study the infrared radiation emission of vegetation flames. Measurements were made in the spectral range 1000-4500 cm -1, using a compact and portable Fourier-transform infrared spectrometer including an HgCdTe/InSb…
Person:
Year: 2009
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fuels
Region(s): Unknown
Keywords: absorption, laboratory fires, radiation, infrared spectrometry
A series of nine large-scale, open fires was conducted in the Intermountain Fire Sciences Laboratory (IFSL) controlled-environment combustion facility. The fuels were pure pine needles or sagebrush or mixed fuels simulating forest-floor, ground fires; crown fires; broadcast…
Person:
Year: 1996
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fuels
Region(s): Northern Rockies
Keywords: laboratory fires, biomass burning, infrared spectroscopy, FTIR - Fourier transform infrared absorption spectroscopy
Biomass samples from a diverse range of ecosystems were burned in the Intermountain Fire Sciences Laboratory open combustion facility. Midinfrared spectra of the nascent emissions were acquired at several heights above the fires with a Fourier transform infrared spectrometer (…
Person:
Year: 1997
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fuels
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: biomass combustion, smoldering, infrared spectroscopy, canopy fire, FTIR - Fourier transform infrared absorption spectroscopy
The mixture of particles, liquids, and gaseous compounds found in smoke from wildland fires is very complex. The potential for long-term adverse health effects is much greater because of this complex mixture. The particles are known to contain many important organic compounds…
Person:
Year: 1997
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Hazard and Risk, Safety
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: particles, smoke components, smoke toxicity
The Fire Behavior Research Work Unit (RWU) of the Intermountain Research Station has been developing the Wildland Fire Assessment System (WFAS) since 1994. The WFAS will eventually combine the functionality of the current fire-danger rating system (Deeming et al. 1977) and the…
Person:
Year: 1997
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Emissions and Smoke, Fire Behavior, Fire Occurrence, Fuels, Hazard and Risk, Mapping, Models, Planning, Weather
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: fire potential, WFAS - Wildland Fire Assessment System, fire danger rating, climatology, crown fires, fire frequency, fire intensity, fuel moisture, live fuels, Oklahoma, smoke management, wilderness fire management, wildfires
Burning of slashed tropical forests and pastures is among the most significant global sources of atmospheric emissions, yet the composition of the fuels and fires that creates these emissions is not well characterized. As part of the Smoke, Clouds, and Radiation-Brazil (SCAR-B)…
Person:
Year: 1998
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects, Fuels
Region(s): International
Keywords: aboveground biomass, tropical forest, Brazil, pasture, canopy fire