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Keyword: smoke

Particulate and trace gas emissions from prescribed burns in southeastern U.S. fuel types: Summary of a 5-year project

Publications Posted on: May 22, 2015
Management of smoke from prescribed fires requires knowledge of fuel quantity and the amount and composition of the smoke produced by the fire to minimize adverse impacts on human health. A five-year study produced new emissions information for more than 100 trace gases and particulate matter in smoke for fuel types found in the southern United States of America using state-of-the-art instrumentation in both laboratory and field experiments.

Climate change impacts on fire regimes and air quality in northern Eurasia

Projects Posted on: March 27, 2015
Global surface temperatures have increased about 0.89°C during the period from 1901 to 2012. Northern Eurasia has experienced the greatest temperature increase to date and is projected to continue experiencing the largest temperature increase globally.

Development and validation of combustion process-based emission models

Projects Posted on: March 27, 2015
Wildland fires emit a substantial amount of atmospheric pollutants including carbon dioxide (CO2), carbon monoxide (CO), methane (CH4), non-methane organic compounds (NMOC), nitrogen oxides (NOX), fine particulate matter (PM2.5), and black carbon (BC). These emissions have major impacts on regional air quality and global climate.

Investigating the links between ozone and organic aerosol chemistry in a biomass burning plume from a California chaparral fire

Publications Posted on: December 31, 2014
Within minutes after emission, rapid, complex photochemistry within a biomass burning smoke plume can cause large changes in the concentrations of ozone (O3) and organic aerosol (OA). Being able to understand and simulate this rapid chemical evolution under 5 a wide variety of conditions is a critical part of forecasting the impact of these fires on air quality, atmospheric composition, and climate.

Laboratory characterization of PM emissions from combustion of wildland biomass fuels

Publications Posted on: November 06, 2013
Particle emissions from open burning of southwestern (SW) and southeastern (SE) U.S. fuel types during 77 controlled laboratory burns are presented.

Data processing technique for multiangle lidar sounding of poorly stratified polluted atmospheres: Theory and experiment

Publications Posted on: April 29, 2013
Scanning elastic lidar, which can operate in different slant directions, is the most appropriate remote sensing tool for investigating the optical properties of smoke-polluted atmospheres. However, the commonly used methodologies of multiangle measurements are based on the assumption of horizontal stratification of the searched atmosphere1,2.

Chemical smoke marker emissions during flaming and smoldering phases of laboratory open burning of wildland fuels

Publications Posted on: February 23, 2012
Smoke emitted by prescribed and wild fires can make a substantial contribution to ambient aerosol (McMeeking et al. 2006; Park et al. 2007; Spracklen et al. 2007). Approaches to investigate these contributions have used a variety of different chemical smoke markers, including levoglucosan, produced by thermal degradation of cellulose, and water-soluble potassium (Andreae 1983; Engling et al. 2006; Hays et al. 2002; Simoneit 2002;Ward et al.

Optical closure experiments for biomass smoke aerosols

Publications Posted on: February 23, 2012
A series of laboratory experiments at the Fire Laboratory at Missoula (FLAME) investigated chemical, physical, and optical properties of fresh smoke samples from combustion of wildland fuels that are burned annually in the western and southeastern US The burns were conducted in the combustion chamber of the US Forest Service Fire Sciences Laboratory in Missoula, Montana.

Wildland fire decision support system air quality tools

Publications Posted on: October 06, 2011
Smoke and air quality information have an important role in wildland fire decisionmaking that is reinforced in the 2009 "Guidance for Implementation of Federal Wildland Fire Management Policy." A key intent of the guidance is to allow consideration and use of the full range of strategic and tactical options that are available in the response to every wildland fire.

A surface fuel classification for estimating fire effects

Publications Posted on: March 04, 2010
We present a classification of duff, litter, fine woody debris, and logs that can be used to stratify a project area into sites with fuel loading that yield significantly different emissions and maximum soil surface temperature. Total particulate matter smaller than 2.5?m in diameter and maximum soil surface temperature were simulated using the First Order Fire Effects Model.