Type
Topic
Region
Year
Displaying 5576 - 5600 of 5844
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Person:
Year: 2005
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects
Region(s): Unknown
Keywords: fire disturbance, greenhouse gas emissions, permafrost
We studied an upland boreal forest plot located in the Prince Albert National Park, Saskatchewan, Canada, to measure the total mercury content in vegetation and organic soil with a view to assessing the potential for mercury release during forest fires. The study area consists…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects
Region(s): International
Keywords: boreal forest, Canada, fire severity, vegetation, Hg - mercury, Prince Albert National Park, Saskatchewan, forest fires, organic soil layers, total mercury content
The uncertainty in carbon emissions from fire was estimated for the boreal region of Alaska over the 50 years of recorded wildfire. Building on previous work where carbon emissions were estimated using a geographic information systems-based model, the uncertainty attached to the…
Person:
Year: 2004
Type: Document
Source: FRAMES
Topic(s): Climate, Emissions and Smoke, Fire Effects
Region(s): Alaska
Keywords: boreal forest, carbon cycling, Monte Carlo simulations, biomass burning
The majority of burning in the boreal forest zone consists of stand replacement fires larger than 10 km2 occurring in remote, sparsely populated regions. Satellite remote sensing using coarse resolution (~1 km) sensors is thus well suited in documenting the spatial and temporal…
Person:
Year: 2002
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Fire Effects, Mapping
Region(s): Alaska, International
Keywords: boreal forest, Canada, fire, regeneration, remote sensing, AVHRR - Advanced Very High Resolution Radiometer, burned area, fire mapping, spatial distribution, SPOT-VEGETATION
The potential of the recent SPOT VEGETATION (VGT) sensor for characterization of boreal forest fires was studied. The capability of the sensor for hotspot detection and burned area mapping was assessed by analysing a series of VGT, NOAA/AVHRR and Landsat TM images over a 1541…
Person:
Year: 2000
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Mapping
Region(s): International
Keywords: Canada, NDVI - Normalized Difference Vegetation Index, remote sensing, AVHRR - Advanced Very High Resolution Radiometer, boreal forest fire, hotspot detection, infrared, mapping burned area, SPOT-VEGETATION sensor, Alberta
Biomass burning releases significant amounts of trace gases and smoke aerosol into the atmosphere. This has an impact on the Earth's radiation budget, the magnitude of which has not yet been well quantified. Satellite remote sensing is well suited to assessing the area of…
Person:
Year: 2000
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Fire Effects, Mapping
Region(s): Alaska, International
Keywords: Canada, fire, NDVI - Normalized Difference Vegetation Index, remote sensing, smoke emissions, AVHRR - Advanced Very High Resolution Radiometer, biomass consumption, heat flux, thermal hotspot detections
Forestry management practices can shape patterns of health, illness, and disease. A primary goal for owners federal, state, andprivate forests is to crap ecosystem management plans that simultaneously optimize forest health and human health. Fire-a major forest management issue…
Person:
Year: 2003
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects, Hazard and Risk, Prescribed Fire, Safety
Region(s): Southern
Keywords: firefighter safety, human health
Despite increasing temperatures since the end of the Little Ice Age (ca. 1850), wildfire frequency has decreased as shown in many field studies from North America and Europe. We believe that global warming since 1850 may have triggered decreases in fire frequency in some regions…
Person:
Year: 1998
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire History, Fire Occurrence, Hazard and Risk, Mapping, Models, Weather
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, International, National
Keywords: boreal forests, Canada, climate model, global change, Europe, Abies balsamea, age classes, Alberta, Betula spp., bibliographies, CO2 - carbon dioxide, climatology, distribution, ecosystem dynamics, Finland, fire danger rating, fire exclusion, fire frequency, fire intensity, fire management, fire regimes, fire size, climate change, grasslands, histories, humidity, Iva, Lake States, land use, Minnesota, Montana, New Brunswick, North Dakota, Norway, Ontario, Picea spp., pine hardwood forests, Pinus spp., population density, Populus spp., precipitation, Quebec, Rocky Mountains, Scandinavia, season of fire, South Dakota, species diversity, succession, Sweden, temperature, Vermont, wildfires, wind, Wyoming
This study investigates the impact of postulated greenhouse warming on the severity of the forest fire season in Canada. Using CO2 levels that are double those of the present (2 X CO2), simulation results from three general circulation models (Geophysical Fluid Dynamics…
Person:
Year: 1991
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Occurrence, Models, Weather
Region(s): Alaska, International
Keywords: Canada, wildfire, climate change, CO2 - carbon dioxide, global warming, British Columbia, climatology, drought, ecosystem dynamics, fire frequency, fire intensity, fire regimes, fire size, humidity, New Brunswick, Ontario, precipitation, Saskatchewan, season of fire, temperature, weather observations
We apply our Snow, Ice, and Aerosol Radiative (SNICAR) model, coupled to a general circulation model with prognostic carbon aerosol transport, to improve understanding of climate forcing and response from black carbon (BC) in snow. Building on two previous studies, we account…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Climate, Emissions and Smoke, Fire Effects, Models
Region(s): Unknown
Keywords: GCMs - general circulation models, biomass burning, aerosol scavenging, black carbon emissions, carbon aerosol climate forcing, climate forcing, meltwater, prognostic carbon aerosol transport, SNICAR - Snow Ice and Aerosol Radiative, snow aging, snow darkening
The summer of 2004 was a hot and smoky one for Alaska's Interior, focusing residents' attention on fire management issues. Natural regeneration of the boreal forest after fire literally has made the forests that are managed today. Forestry professor Scott Rupp and others are…
Person:
Year: 2004
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Fuels, Models
Region(s): Alaska
Keywords: fire management, regeneration, 2004 fire season, fire plan, fire recovery, fuel modeling, tourism
A comprehensive evaluation of the vertical structure of a smoldering smoke plume was afforded by a unique combination of tethersonde measurements (from ground level to about 400 m above ground level (AGL) or 274-674 m above sea level (AGL)), lidar sounding (from about 1.5 to 5…
Person:
Year: 2003
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Fire Effects
Region(s): Alaska
Keywords: biomass, emission, Frostfire, particles
Atmospheric particulate matter can be strongly affected by smoke from biomass combustion, including wildfires, prescribed burns, and residential wood burning. Molecular source tracer techniques help determine contributions of biomass smoke to particle concentrations if…
Person:
Year: 2006
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Economics, Emissions and Smoke, Fire Behavior, Fire Effects, Fuels, Prescribed Fire
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: air quality, PM2.5, levoglucosan, IC-PAD, aerosols, emission factors, biomass, broadcast burning, C - carbon, cellulose, chemical compounds, combustion, duff, fire management, forest products, fuel types, grasses, laboratory fires, needles, particulates, sloping terrain, smoke management, wildfires, wood, wood properties
Only in recent times, systematic attention has been paid to the occupational health of forest firefighters and workers who manage prescribed fire. Two parts of the effort to learn the impact on worker health are medical observation of those workers, and study of occupational…
Person:
Year: 1991
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects, Prescribed Fire, Safety
Region(s): Unknown
Keywords: vegetation, toxicity, firefighter health
The boreal forests of Russia play a prominent role in the global carbon cycle and the flux of greenhouse gases to the atmosphere. Large areas of Russian forest burn annually, and contributions to the net flux of carbon to the atmosphere may be significant. Forest fire emissions…
Person:
Year: 1993
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Economics, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire History, Fire Occurrence, Fire Prevention, Fuels, Models, Weather
Region(s): International
Keywords: boreal forest, carbon budget, carbon emissions, climate change, Russia, biomass burning, air quality, arthropods, bibliographies, biogeography, biomass, C - carbon, CO2 - carbon dioxide, climax vegetation, crown fires, decay, distribution, disturbance, drought, fire control, fire frequency, fire hazard reduction, fire intensity, fire management, fire suppression, forest management, forest types, fuel loading, gases, human caused fires, insects, Larix spp., nutrient cycling, overstory, Pinus spp., post-fire recovery, Siberia, soils, succession, temperate forests, understory vegetation, wildfires
An overview is given of recent research on forest fires, particularly climate change and its implications for forest fire and vegetation zoning in Russian and Canadian boreal forests, fire emissions and their impact on the atmosphere, the predicted catastrophic effects on global…
Person:
Year: 1998
Type: Document
Source: FRAMES
Topic(s): Climate, Emissions and Smoke, Fire Ecology, Fire Effects
Region(s): Alaska
Keywords: boreal forest, Canada, fire, smoke emissions, air pollution, climate change, Russia, biomass burning
Prescribed fires are likely to re-emit atmospherically deposited mercury (Hg), and comparison of soil Hg storage in areas affected by prescribed fire to that in similar unburned areas may provide cross-validating estimates of atmospheric Hg deposition. Prescribed fires are…
Person:
Year: 2006
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Ecology, Fire Effects, Fire History, Fuels, Prescribed Fire
Region(s): Southern
Keywords: mercury emissions, podzolic soils, Spodosols, Florida, mercury deposition, air quality, C - carbon, coastal plain, fire management, fire regimes, forest management, Ilex glabra, longleaf pine, Hg - mercury, needles, N - nitrogen, Osceola National Forest, Pinus palustris, Serenoa repens, SFP - Southern Fire Portal, soil management, soil nutrients, soils, statistical analysis, understory vegetation
Wildfire temperature retrieval commonly uses measured radiance from a middle infrared channel and a thermal infrared channel to separate fire emitted radiance from the background emitted radiance. Emitted radiance at shorter wavelengths, including the shortwave infrared, is…
Person:
Year: 2006
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Fuels, Models, Monitoring and Inventory
Region(s): California
Keywords: AVIRIS - Airborne Visible Infrared Imaging Spectrometer, fire temperature, radiant modeling
Fire performs many beneficial ecosystem functions in dry forests and rangelands across much of North America. In the last century, however, the role of fire has been dramatically altered by numerous anthropogenic factors acting as root causes of the current fire crisis,…
Person:
Year: 2004
Type: Document
Source: FRAMES, TTRS
Topic(s): Administration, Climate, Economics, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire Prevention, Fuels, Hazard and Risk, Intelligence, Mapping, Outreach, Planning, Prescribed Fire, Regulations and Legislation, Restoration and Rehabilitation, Social Science, Wildland-Urban Interface (WUI)
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: fire management, ecological integrity, fire restoration, public lands, wildfire policy, age classes, bibliography, catastrophic fires, climatology, coniferous forests, conservation, disturbance, ecosystem dynamics, education, fire hazard reduction, fire suppression, fire management planning, fire regimes, forest fragmentation, forest types, fragmentation, fuel accumulation, fuel management, grazing, introduced species, invasive species, landscape ecology, livestock, logging, natural resource legislation, old growth forest, plant communities, post-fire recovery, public information, riparian habitats, roads, salvage, animal species diversity, plant species diversity, succession, suppression, thinning, weed control, wilderness areas, wilderness fire management, wildfires, wildlife refuges
In support of Canada's National Forest Carbon Monitoring, Accounting and Reporting System, a project was initiated to develop and test procedures for estimating direct carbon emissions from fires. The Canadian Wildland Fire Information System (CWFIS) provides the infrastructure…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Communications, Emissions and Smoke, Fire Behavior, Fire Effects, Fuels, Intelligence, Mapping, Models, Monitoring and Inventory, Weather
Region(s): International
Keywords: boreal forests, Canada, fuel consumption, remote sensing, carbon emissions, Boreal Fire Effects Model, Canada's National Forest Carbon Monitoring, Accounting and Reporting System, CWFIS - Canadian Wildland Fire Information System, air quality, biomass, C - carbon, coniferous forests, dead fuels, decomposition, disturbance, fire intensity, fire management, fire size, foliage, forest management, fuel loading, fuel management, fuel types, heavy fuels, litter, mortality, organic matter, population density, rate of spread, snags, wildfires
Radiocarbon signatures Delta 14C of carbon dioxide CO2 provide a measure of the age of C being decomposed by microbes or respired by living plants. Over a 2-year period, we measured Delta 14C of soil respiration and soil CO2 in boreal forest sites in Canada, which varied…
Person:
Year: 2006
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Emissions and Smoke, Fire Ecology, Fire Effects, Fire Occurrence, Fuels, Hazard and Risk
Region(s): International
Keywords: boreal forests, decomposition, soil respiration, stand age, carbon storage, CO2 - carbon dioxide, soil carbon dioxide, Canada, age classes, C - carbon, catastrophic fires, evapotranspiration, fire frequency, gases, Manitoba, mosses, roots, soil management, soil nutrients, soil temperature, vegetation surveys, soils, wildfires
Numerical simulations using a coupled atmosphere-fire model (called HIGRAD/ FIRETEC) are examined to investigate the dynamics of fire behavior in grasslands, focusing specifically on the relative roles and contributions of radiative and convective heat transfer and the…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Models
Region(s): Unknown
Keywords: grasslands, fire spread, FIRETEC, HIGRAD
The structure and dynamics of buoyant plumes arising from surface-based heat sources in a vertically sheared ambient atmospheric flow are examined via simulations of a three-dimensional, compressible numerical model. Simple circular heat sources and asymmetric elliptical ring…
Person:
Year: 2005
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Models, Prescribed Fire
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, International, National
Keywords: numerical simulation, plumes, circular heat sources, asymmetric elliptical ring heat sources , coherent vortical structures, air quality, convection, ecology, fire intensity, fire management, Florida, smoke behavior, heat, smoke management, statistical analysis, wind, wildfires
Laboratory experiments were conducted to investigate how both mineral soil and moisture content affect the smoldering combustion in forest duff. Peat was used to represent the fermentation and humus horizons (Oe and Oa soil horizons) of a coniferous forest floor nominally called…
Person:
Year: 1987
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Fuels
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: canopy, combustion, Douglas-fir, jack pine, Pinus banksiana, Pseudotsuga menziesii, surface fire, coniferous forest, duff, Engelmann spruce, fermentation, humus, inorganic content, Larix occidentalis, lightning ignitions, mineral soil, moisture content, peat, Picea engelmannii, root damage, smoke pollution, smoldering, western larch, holdover fires
Emissions from forest fires in Alaska and the Yukon Territory were observed at Chebogue Point, Nova Scotia (43.7°N, 66.1°W), between 11 and 13 July 2004. Smoke aerosols were first detected in the free troposphere by a Raman lidar and extended up to 8 km altitude. The plume was…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects
Region(s): Alaska, International
Keywords: Canada, boreal fire, meteorology, Yukon Territory, smoke aerosols, atmospheric transport, Nova Scotia, troposphere