Type
Topic
Region
Year
Displaying 851 - 875 of 5837
Duff reduction in burned clearcut units in western Washington and western Oregon is related to preburn variables. Forty-three cable-yarded units were burned and monitored for duff reduction. Two prediction equations for estimating duff reduction are presented. One uses large-…
Person:
Year: 1985
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fuels, Models, Prescribed Fire
Region(s): Northwest
Keywords: air quality, duff reduction, FERA - Fire and Environmental Research Applications Team, Oregon, slash burning, smoke management, Washington
Animal exposure studied and large scale fire data indicate that one of the early life hazards in a developing fire is from the generation of carbon monoxide and other combustion gases. A gas chromatograph as been interfaced to an NBS Smoke Chamber to study the rate of generation…
Person:
Year: 1974
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: CO - carbon monoxide, emission rate, combustion gases, smoke chamber
Airborne measurements have been made in the smokes from large fires of standing coniferous trees and logging debris, standing chaparral, fallen jack pine, and wheat stubble. Panicle emission factors, particle size distributions, optical properties of the smokes, and trace gas…
Person:
Year: 1988
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke
Region(s): California, Northern Rockies, Northwest, International
Keywords: Canada, PM - particulate matter, biomass burning, airborne measurements
Due to the increasing concern about global climate change and the realization that biomass fires are a significant source of CO2, CH4, and other greenhouse gases, there is a need to quantify the emissions of these gases from biomass fires. The emissions from a wide variety of…
Person:
Year: 1991
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: CO - carbon monoxide, hydrocarbons, biomass fires
Biomass and hydrocarbon fuel fires are two common sources of obscuring smoke which present significant operational challenges over a broad range of possible viewing wavelengths. This is especially true of very large fires where the primary smoke particles (approx. 0.1-0.3 um…
Person:
Year: 1990
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fuels
Region(s): California, Northern Rockies, Northwest, International
Keywords: Canada, atmospheric dynamics, hydrocarbons, biomass burning
Particulate-matter emission factors and Byram's fire-intensity values were computed for experimental backfires in pine-litter and palmetto-gallberry fuels in the Southeast. The combined data for both fuel types were in reasonable agreement with the theoretical prediction that…
Person:
Year: 1980
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fuels, Models
Region(s): Southern
Keywords: fire intensity, PM - particulate matter, emission factors, emission factor models, backfire, fuel moisture, fuel types, Ilex glabra, particulates, Serenoa repens, smoke management
Eighteen experimental fires were used to compare measured and calculated values for emission factors and fuel consumption to evaluate the carbon balance technique. The technique is based on a model for the emission factor of carbon dioxide, corrected for the production of other…
Person:
Year: 1982
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fuels, Models, Prescribed Fire
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: laboratory fires, smoke management, forest fire smoke, smoke plume concentrations, air quality, carbon, carbon dioxide, gases, particulates, smoke behavior
A southeasterly flow in the form of a low-level jet that enters the Mexico City basin through a mountain gap in the southeast corner of the basin developed consistently in the afternoons or early evenings during a four-week 1997 winter field campaign. Peak wind speeds often…
Person:
Year: 2000
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Weather
Region(s): International
Keywords: gap, wind, Mexico City
Planning prescribed fires for optimal periods which results in emissions reduction is an extremely useful air quality management technique. New information suggests that one more useful tool in smoke management may involve using the capacity of the atmosphere to remove smoke…
Person:
Year: 1991
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Prescribed Fire
Region(s): Unknown
Keywords: air quality, emission reduction, smoke management, biomass burning, cloud scavenging
Ash from the massive 18 May 1980 eruption of Mount St. Helens readily gave off large amounts of carbonyl sulfide and carbon disulfide gases at room temperature. These findings suggest that the sulfur that enhances the Junge sulfate layer in the stratosphere after volcanic…
Person:
Year: 1982
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke
Region(s): Northwest
Keywords: ash, Mount St. Helens, carbonyl sulfide, carbon disulfide
A program of laboratory burning experiments was carried out to assess the air pollutant emissions potential of forest residues in the Pacific Northwest. The emphasis was on measuring particulate emission factors and their relation to fire intensity.
Person:
Year: 1974
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fuels
Region(s): California, Northwest
Keywords: fire intensity, fuel consumption, slash fire, particulate emissions
Prescribed burning is an effective tool widely used in forest management. Several strategies are employed to minimize pollution from prescribed fire, including systems to avoid polluting sensitive areas or to ensure adequate dilution between the source and the receptors. Success…
Person:
Year: 1983
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fuels, Prescribed Fire
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: emission reduction, pollution
The acres of forest land treated by prescribed fire in the Pacific Northwest have steadily increased over the last decade despite escalating costs, better utilization, and environmental concerns (Washington Department of Natural Resources 1983). In conflict with that trend,…
Person:
Year: 1983
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Prescribed Fire
Region(s): Northwest
Keywords: air quality, air pollution, emission reduction, smoke management
Pollutants sampled during the burning of 30 lb ponderosa pine fuel beds yielded emission factors for CO, hydrocarbon gases, and particulate matter of 146, 8.4, and 9.1 lb/ton of fuel, respectively. When similar beds were treated with diammonium phosphate flame retardant, these…
Person:
Year: 1975
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Effects, Fuels, Prescribed Fire
Region(s): California
Keywords: Pinus ponderosa, ponderosa pine, PM - particulate matter, slash burning, pollutants, flame retardants, air quality, combustion, fire intensity, fire management, forest management, gases, humidity, laboratory fires, CH4 - methane, mopping up, national forests, phosphate, pine forests, slash, wildfires
Recent progress on boundary layer flow within and above tall forest canopies in complex terrain is reviewed from the perspective of developing methods to interpret carbon dioxide fluxes from tower measurements in real terrain. Two examples of complex terrain are considered in…
Person:
Year: 2008
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke
Region(s): International
Keywords: complex terrain, flux tower, forests, gravity current, hills, stratification, turbulence
This document contains a recommendation on obtaining simple, realistic information for an emission inventory of wildland fires appropriate for State Implementation Plan (SIP) development. The minimum precision for the inventory would be a one-year time period (current and…
Person:
Year: 1997
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, National
Keywords: air quality, SIP - state implementation plan
Our paper points out certain problems in current predictive methods on which most smoke management programs are based. These problems complicate research efforts to improve predictability of air quality impacts of forest burning. In addition, we offer a hypothesis, based on…
Person:
Year: 1976
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Fire Behavior, Fire Effects, Fuels, Models, Prescribed Fire, Regulations and Legislation
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: air quality, PM - particulate matter, smoke management, slash fire, burning permits, C - carbon, CO - carbon monoxide, chemical compounds, ecology, fire intensity, fire regimes, firing techniques, fuel loading, fuel management, fuel types, gases, herbaceous vegetation, hydrocarbons, mosaic, needles, peat, pollution, slash, statistical analysis, wildfires, wood
In this paper, the impact on air quality of prescribed fire for weed control is described, and management opportunities to control air pollution are discussed.
Person:
Year: 1981
Type: Document
Source: FRAMES, TTRS
Topic(s): Emissions and Smoke, Prescribed Fire
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: air quality, air pollution, PM - particulate matter, weed control, carbon dioxide, CO - carbon monoxide, fire intensity, forest management, grass fuels, grasses, hydrocarbons, live fuels, particulates, smoke management, weed control
In 1981, the first in a series of paired-unit demonstrations was conducted in which utilization levels and pollutant source strength were measured. This report describes, for western Washington and Oregon, the degree of additional wood fiber production and emission reduction…
Person:
Year: 1982
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Prescribed Fire
Region(s): Northwest
Keywords: air pollution, PM - particulate matter, air pollutants, residues, wood utilization
Results of aerial measurements in plumes from large urban areas, petroleum refineries, automotive-painting operations, fossil-fuel power plants, and controlled burning of forest slash are presented. Field monitoring studies occurred during summer months between 1974 and 1980 and…
Person:
Year: 1983
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke
Region(s): California, Eastern, Northwest, Southern
Keywords: plumes, pollutants, photochemical ozone formation
On April 28-30, 1982, the Midwest Section was host to a Specialty Meeting sponsored by APCA's Committee TP-3, Emission Factors and Inventories. The theme of the meeting was 'Emission Inventories and Air Quality Management'. This overview contains the Technical Program Committee'…
Person:
Year: 1982
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke
Region(s): Unknown
Keywords: air quality
In compartment fires a situation often develops in which a layer of oxygen-depleted gases builds up in the upper part of the enclosure. The downward reach of such a layer can be sufficient to make its lower boundary interact with the fire plume. In that case, while the…
Person:
Year: 1980
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke, Fire Behavior, Models
Region(s): Unknown
Keywords: burning rate, fire plumes, flame characteristics
This paper is directed to those Individuals concerned about measuring particulate matter concentrations with portable light-scattering instruments. Extensive studies have been conducted of the relation between the light-scattering coefficient and particulate matter concentration…
Person:
Year: 1982
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke
Region(s): Southern
Keywords: Georgia, Florida, particulate matter (PM) concentrations, light scattering coefficient
Until recently, monitoring for emissions from open burning were limited principally to industrial pollutants, as governed by the National Ambient Air Quality Standards. Emission factors were determined by relating the quantity of effluent produced to the weight of fuel burned.…
Person:
Year: 1979
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke
Region(s): Northwest
Keywords: air quality, particulates
Sections 111 and 112 of the Clean Air Act relative to the control of particulates are evaluated. Section 111 provides the promulgation of standards for hazardous pollutants which reflect the best systems of emission reduction. Section 112 defines national emission standards for…
Person:
Year: 1975
Type: Document
Source: FRAMES
Topic(s): Emissions and Smoke
Region(s): Alaska, California, Eastern, Great Basin, Hawaii, Northern Rockies, Northwest, Rocky Mountain, Southern, Southwest, National
Keywords: air quality, particulates, Clean Air Act, PM - particulate matter