Type
Topic
Region
Year
Displaying 176 - 193 of 193
The quality of temporal information from daily burned area inputs was evaluated using a transport and chemistry experiment. Carbon monoxide emissions from boreal forest fires were estimated using burned area inputs with daily resolution. Averaging of emissions data to create 30-…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects
Region(s): Alaska, International
Keywords: Canada, AVHRR - Advanced Very High Resolution Radiometer, Russia, international, boreal forest fires, CASN - Cooperative Air Sampling Network, CO emissions, MOPITT - Measurement of Pollution in the Troposphere instrument, UMD-CTM - University of Maryland Chemistry and Transport Model
Carbon monoxide reached record high levels in the northern extratropics in the late summer and fall of 1998 as a result of anomalously large boreal fires in eastern Russia and North America. We investigated the effects of these fires on CO and tropospheric oxidants using a…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects
Region(s): Alaska, International
Keywords: Canada, boreal fire, CO - carbon monoxide, ozone, Russia, GEOS-Chem, injection altitude, PAN - peroxyacetyl nitrate, tropospheric oxidants
The effects of forest fire smoke on sky polarization and animal orientation are practically unknown. Using full-sky imaging polarimetry, we therefore measured the celestial polarization pattern under a smoky sky in Fairbanks, Alaska, during the forest fire season in August 2005…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Ecology, Fire Effects
Region(s): Alaska, International
Keywords: Canada, British Columbia, animal orientation, forest fire smoke, sky polarization
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
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
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
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
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
Intercontinental Transport of Ozone and Precursors (ITOP) ( part of International Consortium for Atmospheric Research on Transport and Transformation (ICARTT)) was an intense research effort to measure long-range transport of pollution across the North Atlantic and its impact on…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Aviation, Emissions and Smoke, Fire Effects, Models
Region(s): Alaska
Keywords: CO - carbon monoxide, tropospheric ozone, Alaska wildfires, biomass burning emissions inventories, Canadian wildfires, chemical transport model, ICARTT - International Consortium for Atmospheric Research on Transport and Transformation, ITOP - Intercontinental Transport of Ozone and Precursors, long-range transport of pollution, North Atlantic, O3 - ozone, plumes, p-TOMCAT
Fires caused by natural or technological disasters emit large amounts of smoke which, once formed into plumes, may affect the human health and the environment. Satellite remote sensing data provide an effective tool to achieve detection and monitoring of these plumes over large…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Effects, Models, Social Science
Region(s): California, International
Keywords: forest fire, remote sensing, human health, natural hazards, AVHRR imagery, England, Iraq, plume detection, plume monitoring, United Kingdom
Earlier work showed that Amazonian biomass burning produces both lofted and initially unlofted emissions in large amounts. A mobile, Fourier transform infrared spectrometer (FTIR) measured the unlofted emissions of 17 trace gases from residual smoldering combustion (RSC) of logs…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Prescribed Fire
Region(s): International
Keywords: FERA - Fire and Environmental Research Applications Team, Brazil, biomass burning, fire emissions
(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
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
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
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
Burning of agricultural waste residue is a common method of disposal when preparing land following crop harvest. This practice introduces volatile organic compounds, including polycyclic aromatic hydrocarbons (PAHs), into the atmosphere. This study examines the particle size…
Person:
Year: 2007
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fuels
Region(s): California
Keywords: PAH - polycyclic aromatic hydrocarbons, particle size, distribution, agricultural burning, emission factors, biofuel, C - carbon, chemical compounds, combustion, cropland fires, fire management, fuel loading, hydrocarbons, particulates, smoke management, statistical analysis, temperature
Prehistoric fire area and emissions from California's forests, woodlands, shrublands, and grasslands
In the majority of US political settings wildland fire is still discussed as a negative force. Lacking from current wildfire discussions are estimates of the spatial extent of fire and their resultant emissions before the influences of Euro-American settlement and this is the…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire History
Region(s): California
Keywords: air quality, C - carbon, fire exclusion, fire regime, fire return interval, fire suppression, particulates, fire policy, fire rotation, air resource management
Wildland fire is a major disturbance in most ecosystems worldwide (Crutzen and Goldammer 1993). The interaction of fire with climate and vegetation over long time spans, often referred to as the fire regime (Agee 1993; Clark 1993; Swetnam and Baisan 1996; Swetnam 1997), has…
Person:
Year: 2007
Type: Document
Source: FRAMES
Topic(s): Climate, Emissions and Smoke, Fire Behavior, Fire Effects, Models
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: C - carbon, fire regimes, climate change, spatial models, ecosystems, fire models, vegetation models