Type
Topic
Region
Year
Displaying 601 - 625 of 5837
Time-resolved optical properties of smoke particles from the controlled laboratory combustion of mid-latitude wildland fuels were determined for the first time using advanced techniques, including cavity ring-down/cavity enhanced detection (CRD/CED) for light extinction and two-…
Person:
Year: 2006
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects, Fuels, Models
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: fuel consumption, aerosols, particles, pollution, radiation
The NOAA WP-3 aircraft intercepted aged forest fire plumes from Alaska and western Canada during several flights of the NEAQS-ITCT 2k4 mission in 2004. Measurements of acetonitrile (CH3CN) indicated that the air masses had been influenced by biomass burning. The locations of the…
Person:
Year: 2006
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Fire Effects
Region(s): Alaska, International
Keywords: Canada, fire weather, biomass combustion, plume composition, transport model, smoke plumes, VOC - volatile organic carbon
Summer 2004 saw severe forest fires in Alaska and the Yukon Territory that were mostly triggered by lightning strikes. The area burned (>2.7 x 10^6 ha) in the year 2004 was the highest on record to date in Alaska. Pollutant emissions from the fires lead to violation of…
Person:
Year: 2006
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects, Models, Weather
Region(s): Alaska
Keywords: air quality, boreal forest, fire weather, LiDAR - Light Detection and Ranging, lightning, N - nitrogen, remote sensing, simulation, area burned, burning, emission, Fairbanks, fire activity, lightning strikes, measurement, quality, studies, summer, transport model, Yukon Territory, fires
We adopt a working definition of residual smoldering combustion (RSC) as biomass combustion that produces emissions that are not lofted by strong fire-induced convection. RSC emissions can be produced for up to several weeks after the passage of a flame front and they are mostly…
Person:
Year: 2003
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: particles, smoldering combustion, trace gas emissions, biomass burning
(1) We used dendrochronology to reconstruct the transfer of coarse woody debris across a forest-stream interface in a fire-prone boreal landscape. A sequence of regulating factors was considered from source to sink of in-stream woody debris (SWD), including fire history at the…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Aquatic, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire History, Fire Occurrence, Fuels, Intelligence
Region(s): International
Keywords: Canada, woody debris, boreal landscape, disturbance severity, ecosystem resilience, Quebec, riparian forest, SWD - in-stream woody debris, ecosystem coupling, forest-stream interface, lateral flow, nonlinear ecosystem dynamics, source-sink dynamics, BEHAVE, boreal forests, conifers, decay, dendrochronology, disturbance, ecosystem dynamics, erosion, fire case histories, fire frequency, fire intensity, fire management, fire scar analysis, forest management, litter, population density, post-fire recovery, residence time, riparian habitats, seed dispersal, seeds, serotiny, statistical analysis, wood, woody plants
Meteorological conditions, extremely conducive to fire development and spread in the spring of 1987, resulted in forest fires burning over extremely large areas in the boreal forest zone in northeastern China and the southeastern region of Siberia. The great China fire, one of…
Person:
Year: 1994
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects, Fuels, Mapping, Weather
Region(s): International
Keywords: boreal forest, China, gas emissions, satellite imagery, Siberia
Aerosols from wildfires are the primary aerosols in the Arctic atmosphere during the summer months. These aerosols occur in large, increasing quantities and impact the sensitive radiative balance in the Arctic. FROSTFIRE, a controlled burn in a Long-Term Ecological Research Area…
Person:
Year: 2008
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Fire Effects, Prescribed Fire
Region(s): Alaska
Keywords: boreal forest, wildfire, Arctic, flaming phase, Frostfire, permafrost, smoke aerosols, aerosol impactor, smoldering phase
During the spring and summer of 1994 we monitored soil-atmosphere exchanges of methane and carbon dioxide at upland sites in the Canadian boreal forest near the northern study area (NSA) of the Boreal Ecosystem-Atmosphere Study (BOREAS). The effects of fire on methane and carbon…
Person:
Year: 1997
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects
Region(s): Alaska, International
Keywords: boreal forest, Canada, carbon, black spruce, boreal, CH4 - methane, CO2 - carbon dioxide, gas exchange, Picea mariana
In Sept. 2003, a prescribed burn on the Uinta National Forest escaped, costing nearly $3 million to extinguish while choking Utah cities with smoke for a week. When the incident drew harsh criticism from local officials and news media, fire managers worried that prescribed…
Person:
Year: 2005
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire History, Fire Prevention, Fuels, Hazard and Risk, Intelligence, Outreach, Prescribed Fire, Social Science, Wildland-Urban Interface (WUI)
Region(s): Great Basin
Keywords: social acceptance, Uinta National Forest, disturbance, education, fire case histories, property damage, fire hazard reduction, fire management, forest management, fuel loading, fuel management, logging, national forests, natural areas management, escaped prescribed fires, public information, sampling, statistical analysis, thinning, Utah, vegetation surveys, wildfires, wildland fuels
Description not entered.
Person:
Year: 1974
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects
Region(s): Unknown
Keywords:
A screening-level assessment of the health risks of chronic smoke exposure for wildland firefighters
A screening health risk assessment was performed to assess the upper-bound risks of cancer and noncancer adverse health effects among wildland firefighters performing wildfire suppression and prescribed burn management. Of the hundreds of chemicals in wildland fire smoke, we…
Person:
Year: 2004
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Safety
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: FERA - Fire and Environmental Research Applications Team, firefighter safety, smoke exposure, fire suppression, firefighting personnel, CO - carbon monoxide, diseases, toxicity, smoke management
Changes in climate, atmospheric carbon dioxide concentration and fire regimes have been occurring for decades in the global boreal forest, with future climate change likely to increase fire frequency - the primary disturbance agent in most boreal forests. Previous attempts to…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Emissions and Smoke, Fire Effects, Fire History, Fire Occurrence, Models
Region(s): International
Keywords: boreal forests, Canada, carbon balance, fire regimes, carbon dynamics, net primary production, atmospheric carbon dioxide concentration, net biome production, vegetation dominance, Alberta, C - carbon, CO2 - carbon dioxide, climatology, competition, coniferous forests, conifers, deciduous forests, disturbance, dominance, drainage, fire frequency, fire management, fire size, forest management, Manitoba, mosses, Picea mariana, Populus tremuloides, precipitation, Saskatchewan, statistical analysis, temperature, trees, vascular plants, vegetation surveys, wildfires
We grew from seed the exotic invasive annual grass Bromus tectorum L., collected from three elevation ecotypes in northern Nevada, USA. Plants were exposed to four CO2 atmosphere concentrations: 270, 320, 370, and 420 umol mol-1. After harvest on day 87, above-ground tissue was…
Person:
Year: 2006
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fuels
Region(s): Great Basin
Keywords: combustion, Forest Products Laboratory, grasses, grasslands, Atriplex spp., wildfires, Bromus, Bromus erectus, Bromus tectorum, Ca - calcium, C - carbon, CO2 - carbon dioxide, Cercocarpus ledifolius, char, ecosystem dynamics, elevation, fine fuels, fire management, fire regimes, flammability, fuel loading, fuel moisture, heat, humidity, invasive species, lignin, Nevada, manganese, N - nitrogen, K - potassium, Pseudoroegneria, statistical analysis
Recent investigations indicate that wildfires provide a significant flux of mercury (Hg) from terrestrial ecosystems to the atmosphere. However, little is known about how geographic location, climate, stand age, and tree species affect Hg accumulation prior to burning and loss…
Person:
Year: 2008
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects
Region(s): Northwest
Keywords: wildfire, Hg - mercury, Washington, Rex Creek Fire, soil cores
Concentrations of mercury (Hg) in soil profiles and vegetation were examined in unburned areas and in areas recently burned by wildfires of low, medium, and high fire severities in western Wyoming. Paired unburned and burned sampling sites with similar tree species composition,…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects
Region(s): Rocky Mountain
Keywords: soil, vegetation, wildfires, Hg - mercury, Wyoming, forest fire severity, tree species composition
Fire directly releases carbon (C) to the atmosphere through combustion of biomass. An estimated 1470 +/- 59 km^2 of peatland burns annually in boreal, western Canada, releasing 4.7 +/- 0.6 Tg C to the atmosphere via direct combustion. We quantified within-site variation in…
Person:
Year: 2003
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Ecology, Fire Effects, Fuels
Region(s): Alaska, International
Keywords: Canada, Alberta, biomass combustion, boreal, carbon storage, organic matter, peatlands, bogs
A suite of particulate, gaseous and meteorological measurements during the Pittsburgh Supersite experiment were used to characterize the impact of the 2002 Quebec wildfires on pollutant concentrations and physical and chemical processes dominant in the region. Temporal trends in…
Person:
Year: 2008
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Social Science, Wildland-Urban Interface (WUI)
Region(s): International
Keywords: Canada, boreal fire, pollutant concentrations, Quebec, 2002 wildfires, fire emissions, urban emissions
Wildfire is a common occurrence in ecosystems of northern high latitudes, and changes in the fire regime of this region have consequences for carbon feedbacks to the climate system. To improve our understanding of how wildfire influences carbon dynamics of this region, we used…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire History, Fire Occurrence, Models
Region(s): Alaska, International
Keywords: ecosystem modeling, Eurasia, boreal carbon dynamics
Since 1977, the extent of forest wildfires in the boreal and western regions of North America increased by 6 to 9x over long-term trends, and an estimated 132x106 ha of temperate and boreal forest burned across the northern hemisphere. Emissions during and after burning may have…
Person:
Year: 1993
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire Occurrence, Models, Prescribed Fire, Restoration and Rehabilitation
Region(s): Alaska, California, Great Basin, Northern Rockies, Northwest, Rocky Mountain, Southwest, International
Keywords: boreal forest, Canada, forest fire, carbon budget, carbon emissions, global warming, air quality, bibliographies, C - carbon, CO2 - carbon dioxide, climatology, combustion, conifers, decay, decomposition, deforestation, ecosystem dynamics, fire frequency, fire management, fire models, fire regimes, fire size, gases, climate change, hardwood forest, soils, temperate forests, temperature, tropical forest, wilderness fire management, wildfires, wood
Twenty papers are presented from the conference convened jointly by the International Boreal Forest Research Association and the Bonanza Creek Long Term Ecological Research Program. A further 9 papers will be published in a special issue of Mitigation and Adaptation Strategies…
Person:
Year: 2005
Type: Document
Source: FRAMES
Topic(s): Climate, Emissions and Smoke, Fire Behavior, Fire Effects
Region(s): Alaska, International
Keywords: boreal forest, Canada, fire, productivity, regeneration, succession, carbon emissions, climate change, disturbance regime, global change, peatland, permafrost
Fire and harvesting are important disturbances in the boreal forest, driving net biome production. Measurements of net ecosystem production (NEP) over mature forest stands have been made from flux towers for about a decade at the Boreal Ecosystem Research and Monitoring Sites (…
Person:
Year: 2006
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fuels
Region(s): International
Keywords: boreal forest, Canada, carbon flux, disturbance, age classes, energy flow, water balance, Saskatchewan, C - carbon, deciduous forests, diameter classes, ecosystem dynamics, energy, evapotranspiration, forest management, logging, size classes, soil moisture, soil temperature, water, wildfires
Fire in the boreal forest renews forest stands and changes the ecosystem properties. The successional stage of the vegetation determines the radiative budget, energy balance partitioning, evapotranspiration and carbon dioxide flux. Here, we synthesize energy balance measurements…
Person:
Year: 2006
Type: Document
Source: FRAMES
Topic(s): Climate, Emissions and Smoke, Fire Ecology, Fire Effects, Fire History
Region(s): Alaska, International
Keywords: boreal forest, Canada, eddy-covariance method, forest fire, albedo, brown ratio, climate change, energy balance, evapotranspiration, radiation
Recent CO2 flux measurements from towers and aircraft (net ecosystem exchange by eddy covariance) and remote sensing/modeling (net primary productivity - NPP) following fire show that the regenerating boreal forest in western Canada has a low initial flux that increases with…
Person:
Year: 2003
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Ecology, Fire Effects, Mapping, Models
Region(s): Alaska, International
Keywords: boreal forest, Canada, carbon flux, eddy-covariance method, fire, regeneration, net ecosystem exchange, net primary productivity
A recent analysis indicates that Canadian forest fires have released an average of 27 Mt (1012 g) of carbon annually over the past four decades (Amiro et al. 2001a). These emissions are caused by direct combustion. About an equal additional amount of carbon may also be lost…
Person:
Year: 2002
Type: Document
Source: FRAMES
Topic(s): Climate, Emissions and Smoke, Fire Effects
Region(s): Alaska, International
Keywords: biodiversity, Canada, fire, fire suppression, boreal, carbon emissions, climate change, Kyoto Protocol
Direct emissions of carbon from Canadian forest fires were estimated for all Canada and for each ecozone for the period 1959-1999. The estimates were based on a database of large fires for the country and calculations of fuel consumption for each fire using the Canadian Forest…
Person:
Year: 2001
Type: Document
Source: FRAMES, TTRS
Topic(s): Climate, Emissions and Smoke, Fire Behavior, Fire Ecology, Fire Effects, Fire History, Fire Prevention, Fuels, Hazard and Risk, Weather
Region(s): International
Keywords: boreal forests, Canada, fuel consumption, carbon emissions, carbon sink, taiga, air quality, arthropods, C - carbon, CO2 - carbon dioxide, climatology, coniferous forests, crown fires, deciduous forests, disturbance, ecosystem dynamics, energy, fire danger rating, fire injuries (animals), fire management, fire size, fire suppression, fuel loading, fuel management, fuel types, gases, insects, particulates, pine forests, Pinus banksiana, Pinus contorta, Pinus ponderosa, Pinus resinosa, Pinus strobus, post-fire recovery, Pseudotsuga menziesii, Douglas-fir, season of fire, statistical analysis, succession, wildfires