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Displaying 821 - 840 of 5651

Charcoal identification and the quantification of its abundance in sedimentary archives is commonly used to reconstruct fire frequency and the amounts of biomass burning. There are, however, limited metrics to measure past fire temperature and fuel…
Author(s): S. Yoshi Maezumi, William D. Gosling, Judith Kirschner, Manuel Chevalier, Henk L. Cornelissen, Thilo Heinecke, Crystal H. McMichael
Year Published:

Wildland fire management across the US is under intense scrutiny as it faces challenges of extreme wildfire seasons, a warming climate and increasing pressures on natural resources. As he ends his term as President of the Student Association for…
Author(s): Lars Filson
Year Published:

im Gumm: I have the privilege of talking to Leslie Weldon and Holly Krake about psychological safety in general and, in particular, an article that Holly led in writing called “The Big Quiet.” Leslie, let’s start with you: What comes to mind when we…
Author(s): Jim Gumm
Year Published:

A new instrument to quantify firebrand dynamics during fires with particular focus on those associated with the Wildland-Urban Interface (WUI) has been developed. During WUI fires, firebrands can ignite spot fires, which can rapidly increase the…
Author(s): Simone Zen, Jan C. Thomas, Eric Mueller, Bhisham Dhurandher, Michael R. Gallagher, Nick Skowronski, Rory Hadden
Year Published:

We live in a changing world where climate change, built-up fuels, and human ignitions are causing fires to increase in size, frequency, and severity. In this changing world, managers are charged with stewarding resilient landscapes under the…
Author(s): Erica A. H. Smithwick, Jamie L. Peeler
Year Published:

Complexity is the main feature of many fire-prone environments, in which the fire regime is driven by climate and socio-economic development on short and long timescales. In this study, the interaction between social and forest environments is…
Author(s): Nadia Ursino
Year Published:

Wildfire emissions affect downwind air quality and human health. Predictions of these impacts using models are limited by uncertainties in emissions and chemical evolution of smoke plumes. Using high-time-resolution aircraft measurements, we…
Author(s): Brett B. Palm, Qiaoyun Peng, Samuel R. Hall, Kirk Ullmann, Teresa L. Campos, Andrew J. Weinheimer, Denise D. Montzka, Geoffrey S. Tyndall, Wade Permar, Lu Hu, Frank Flocke, Emily V. Fischer, Joel A. Thornton
Year Published:

The wildland firefighter exposure and health effect (WFFEHE) study was a 2-year repeated-measures study to investigate occupational exposures and acute and subacute health effects among wildland firefighters. This manuscript describes the study…
Author(s): Kathleen M. Navarro, Corey Butler, Kenneth Fent, Christine Toennis, Deborah Sammons, Alejandra Ramirez-Cardenas, Kathleen A. Clark, David C. Byrne, Pamela S. Graydon, Christa Hale, Andrea F. Wilkinson, Denise L. Smith, Marissa C. Alexander-Scott, Lynne E. Pinkerton, Judith Eisenberg, Joseph W. Domitrovich
Year Published:

Violent fire-driven convection can manifest as towering pyrocumulus (pyroCu) or pyrocumulonimbus (pyroCb) clouds, which can have devastating impacts on the environment and society. Their associated fire spread is erratic, unpredictable and not…
Author(s): Rachel Badlan, J. Sharples, Jason P. Evans, Richard H. D. McRae
Year Published:

Smoke detection is of great significance for fire location and fire behavior analysis in a fire video surveillance system. Smoke image classification methods based on a deep convolution network have achieved high accuracy. However, the combustion of…
Author(s): Zhipeng Ding, Yaqin Zhao, Ao Li, Zhaoxiang Zheng
Year Published:

A conceptual model based on the balance of energy in a system composed of a burning cigarette, ambient flow and a porous fuel bed is proposed to study the burning of a single cigarette and the process of fuel bed dehydration, pyrolysis and its…
Author(s): Domingos Xavier Viegas, Ricardo Oliveira, Miguel Almeida, Donghyun Kim
Year Published:

Background: Evidence from previous studies suggests that women firefighters have greater risk of some adverse reproductive outcomes. The purpose of this study was to investigate whether women firefighters had greater risk of miscarriage compared to…
Author(s): Alesia M. Jung, Sara A. Jahnke, Leslie K. Dennis, Melanie L. Bell, Jefferey L. Burgess, Nattinee Jitnarin, Christopher M. Kaipust, Leslie V. Farland
Year Published:

Heat accumulation from wearing personal protective equipment can result in the development of heat-related illnesses. This study aimed to investigate factors of heat stress with and without a US standard issue wildland firefighter helmet. Ten male…
Author(s): Shae Gurney, Katherine Christison, Tyler Stenersen, Charles L. Dumke
Year Published:

Understanding tree physiological responses to fire is needed to accurately model post‐fire carbon processes and inform management decisions. Given trees can die immediately or at extended time periods after fire, we combined two experiments to…
Author(s): Raquel Partelli Feltrin, Alistair M. S. Smith, Henry D. Adams, Crystal A. Kolden, Daniel M. Johnson
Year Published:

Increasing drought and changing temperatures drive researchers to seek more efficient and effective means to aid management of coniferous forests across the western United States. Thinning allows for effective removal of biomass, but with few…
Author(s): Christine M. Mott, Richard Hofstetter, Anita Antoninka
Year Published:

It is common practice for land managers to thin forests in the western United States and then masticate fuels by mowing, chipping or mulching the downed trees, shrubs and herbaceous vegetation. The thinning reduces canopy fuels and then mastication…
Author(s): Alex W. Kirkpatrick
Year Published:

Fire spread occurs via radiation, flame contact, and firebrands. While firebrand showers are known to be a cause of spot fires which ignite fuels far from the main fire front, in the case of short distance spot fires, radiation from the main fire…
Author(s): Sayaka Suzuki, Sam Manzello
Year Published:

National forests in the western United States are divided roughly in half between lands without roads managed for wilderness characteristics and lands with an extensive road system managed for multiple uses including resource extraction. We…
Author(s): James D. Johnston, John B. Kilbride, Garrett W. Meigs, Christopher J. Dunn, Robert E. Kennedy
Year Published:

Woody plant expansions are altering ecosystem structure and function, as well as fire regimes, around the globe. Tree‐reduction treatments are widely implemented in expanding woodlands to reduce fuel loads, increase ecological resilience, and…
Author(s): Stephanie M. Freund, Beth A. Newingham, Jeanne C. Chambers, Alexandra K. Urza, Bruce A. Roundy, J. Hall Cushman
Year Published:

Forest residues and logging slash from pre-commercial forest thinning and regeneration harvests are a potential feedstock for bioenergy production but there has been a concern about the impact of residue removal on forest soil C and N. This study…
Author(s): Jason James, Deborah S. Page-Dumroese, Matt Busse, Brian J. Palik, Jainwei Zhang, Bob Eaton, Robert A. Slesak, Joanne M. Tirocke, Hoyoung Kwon
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