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Keyword: emissions

Will landscape fire increase in the future? A systems approach to climate, fire, fuel, and human drivers

Publications Posted on: February 13, 2019
The extent of the Earth's surface burned annually by fires is affected by a number of drivers, including but not limited to climate. Other important drivers include the amount and type of vegetation (fuel) available and human impacts, including fire suppression, ignition, and conversion of burnable land to crops.

Contiguous United States wildland fire emission estimates during 2003-2015

Publications Posted on: December 17, 2018
Wildfires are a major source of air pollutants in the United States. Wildfire smoke can trigger severe pollution episodes with substantial impacts on public health. In addition to acute episodes, wildfires can have a marginal effect on air quality at significant distances from the source, presenting significant challenges to air regulators’ efforts to meet National Ambient Air Quality Standards.

Modeling crop residue burning experiments to evaluate smoke emissions and plume transport

Publications Posted on: April 10, 2018
Crop residue burning is a common land management practice that results in emissions of a variety of pollutants with negative health impacts. Modeling systems are used to estimate air quality impacts of crop residue burning to support retrospective regulatory assessments and also for forecasting purposes.

Airborne characterization of smoke marker ratios from prescribed burning

Publications Posted on: July 20, 2017
A Particle-Into-Liquid Sampler - Total Organic Carbon (PILS-TOC) and fraction collector system was flown aboard a Twin Otter aircraft sampling prescribed burning emissions in South Carolina in November 2011 to obtain smoke marker measurements.

Life cycle analysis of biochar [Chapter 3]

Publications Posted on: June 08, 2017
All products, including bioproducts, have an impact on the environment by consuming resources and releasing emissions during their production. Biochar, a bioproduct, has received considerable attention because of its potential to sequester carbon in soil while enhancing productivity, thus aiding sustainable supply chain development.

On-site energy consumption and selected emissions at softwood sawmills in the southwestern United States

Publications Posted on: December 07, 2016
Presently there is a lack of information describing US southwestern energy consumption and emissions generated from the sawmilling industry. This article uses a mail survey of softwood sawmills in the states of Arizona, Colorado, and New Mexico to develop a profile of on-site energy consumption and selected emissions for the industry.

Forest biomass diversion in the Sierra Nevada: Energy, economics and emissions

Publications Posted on: October 07, 2016
As an alternative to open pile burning, use of forest wastes from fuel hazard reduction projects at Blodgett Forest Research Station for electricity production was shown to produce energy and emission benefits: energy (diesel fuel) expended for processing and transport was 2.5% of the biomass fuel (energy equivalent); based on measurements from a large pile burn, air emissions reductions were 98%-99% for PM2.5, CO (carbon monoxide), NMOC (nonm

Northern Eurasia black carbon

Science Spotlights Posted on: August 16, 2016
Scientists examined daily black carbon emissions from fires over different land cover types in Northern Eurasia. Their results are critical in understanding the future impacts of climate change on the fire dynamics in Northern Eurasia and the contribution of black carbon to accelerated melting of Arctic ice.

Development of combustion process-based emission models

Projects Posted on: July 25, 2016
This project seeks to address two key scientific questions: (1) Are emission factors for CO2, CO, CH4, NOX, PM2.5, and BC significantly dependent on either fuel moisture or fuel bed structure? and (2) Can fuel moisture and fuel bed structure serve as independent variables for empirical models that reliably predict these emission factors?

Models for quantifying smoke emissions and impacts

Projects Posted on: July 25, 2016
In this study, we determined the locations of wildfire-derived emissions and their aggregate impacts on Salt Lake City, Utah, a major urban center downwind of the fires. The USFS Rocky Mountain Research Station’s new Wildland Fire Emission Inventory Version 2 model was used to determine the location and timing of wildfire emissions.