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Displaying 1681 - 1700 of 5651

The effectiveness of annual investments in US wildfire management programs has been subject to public criticism. One source of inefficiency may arise from a fragmented budgeting process. In the United States, federal budgets for wildfire management…
Author(s): David J. Rossi, Olli-Pekka Kuusela
Year Published:

Forest fires in Galicia have become a serious environmental problem over the years. This is especially the case in the Pontevedra region, where in October 2017 large fires (>500 hectares) burned more than 15,000 Ha. In addition to the area burned…
Author(s): Jose Antonio Sobrino, Rafael Llorens, Cristina Fernández, José M. Fernández-Alonso, José A. Vega
Year Published:

Recently, the World Scientists' Warning to Humanity: a Second Notice was issued in response to ongoing and largely unabated environmental degradation due to anthropogenic activities. In the warning, humanity is urged to practice more environmentally…
Author(s): Sean C. P. Coogan, Francois-Nicolas Robinne, Piyush Jain, Michael D. Flannigan
Year Published:

A two-dimensional three-phase mathematical model of forest fires constructed by the method of averaging over the height of the forest fuel layer is considered. The gas phase in the model is described by gas dynamics equations with the k − ε…
Author(s): Andrey A. Kuleshov, Elena E. Myshetskaya, Sergey E. Yakush
Year Published:

Smouldering fire vulnerability in organic-rich, wetland soils is regulated by hydrologic regimes over short (by antecedent wetness) and long (through influences on soil properties) timescales. An integrative understanding of these controls is needed…
Author(s): Morgan L. Schulte, Daniel L. McLaughlin, Frederic C. Wurster, J. Morgan Varner, Ryan D. Stewart, W. Mike Aust, C. Nathan Jones, Bridget Gile
Year Published:

Soil heating resulting from prescribed burning in the southern US has potential immediate and long-term impacts. Where fire is being restored to long-unburned sites, the duration and depth of soil heating may be substantial, affecting seed banks,…
Author(s): Leda N. Kobziar, J. Morgan Varner, Jesse K. Kreye, Michael G. Andreu, David R. Godwin
Year Published:

In subalpine forests of the western United States that historically experienced infrequent, high‐severity fire, whether fire management can shape 21st‐century fire regimes and forest dynamics to meet natural resource objectives is not known. Managed…
Author(s): Winslow D. Hansen, Diane Abendroth, Werner Rammer, Rupert Seidl, Monica G. Turner
Year Published:

This paper describes a methodology using LiDAR point clouds with an ultra-high resolution in the characterization of forest fuels for further wildfire prevention and management. Biomass management strips were defined in three case studies using a…
Author(s): Marta Fernández-Álvarez, Julia Armesto, Juan Picos
Year Published:

Key message: The collective analysis of a relatively large number of wildfire observations documented in conifer forests, dry eucalypt forests and temperate shrublands revealed that the forward rate of fire spread is roughly 10% of the average 10-m…
Author(s): Miguel G. Cruz, Martin E. Alexander
Year Published:

Most wildfires in North America are quickly extinguished during initial attack (IA), the first phase of suppression. While rates of success are high, it is not clear how much IA suppression reduces annual fire risk across landscapes. This study…
Author(s): Jonathan Reimer, Dan K. Thompson, Nicholas A. Povak
Year Published:

Advances in high-performance computing have led to an improvement in modeling multi-physics systems because of the capacity to solve complex numerical systems in a reasonable time. WRF-SFIRE is a multi-physics system that couples the atmospheric…
Author(s): Angel Farguell, Ana Cortés, Tomàs Margalef, Josep R. Miró, J. Mercader
Year Published:

This paper reports the results of two hypotheses tests regarding whether fuel reduction treatments using prescribed burning and mechanical methods reduces wildfire suppression costs and property damages. To test these two hypotheses data was…
Author(s): John B. Loomis, José J. Sánchez, Armando Gonzalez-Caban, Douglas B. Rideout, Robin Reich
Year Published:

Over the past three decades, wildfires in southwestern US ponderosa pine (Pinus ponderosa Lawson & C. Lawson) forests have increased in size and severity. These wildfires can remove large, contiguous patches of mature forests, alter dominant…
Author(s): Suzanne M. Owen, Adair M. Patterson, Catherine A. Gehring, Carolyn Hull Sieg, L. Scott Baggett, Peter Z. Fule
Year Published:

Paleofire studies frequently discount the impact of human activities in past fire regimes. Globally, we know that a common pattern of anthropogenic burning regimes is to burn many small patches at high frequency, thereby generating landscape…
Author(s): Christopher I. Roos, Grant J. Williamson, David M. J. S. Bowman
Year Published:

Wildfires represent one of the largest disturbances in watersheds of the Intermountain West. Yet, we lack models capable of predicting post‐wildfire impacts on downstream ecosystems and infrastructure. Here we present a novel modeling framework that…
Author(s): Brendan P. Murphy, Jonathan A. Czuba, Patrick Belmont
Year Published:

Prescribed burning is a widely used strategy in forested landscapes to reduce the risk from wildfires to human lives and valued assets. The ability for managers to undertake prescribed burns is contingent on fuel, weather and operational constraints…
Author(s): Thomas J. Duff, Jane G. Cawson, Trent D. Penman
Year Published:

The FireFlux II experiment was conducted in a tall grass prairie located in south-east Texas on 30 January 2013 under a regional burn ban and high fire danger conditions. The goal of the experiment was to better understand micrometeorological…
Author(s): Craig B. Clements, Adam K. Kochanski, Daisuke Seto, Braniff Davis, Christopher Camacho, Neil Lareau, Jonathan Contezac, Joseph C. Restaino, Warren Heilman, Steven K. Krueger, Bret W. Butler, Roger D. Ottmar, Robert E. Vihnanek, James Flynn, Jean-Baptiste Filippi, Toussaint Barboni, Dianne E. Hall, Jan Mandel, Mary Ann Jenkins, Joseph J. O'Brien, Benjamin Hornsby, Casey Teske
Year Published:

Wyoming big sagebrush is a widely distributed shrub that is native to the western United States. It occupies the largest area of the big sagebrush cover types. Wyoming big sagebrush ecosystems support hundreds of plant and animal species, including…
Author(s): Robin J. Innes
Year Published:

Fine-fuel moisture is an important variable in the wildland fire environment, but measuring live fuel moisture is time-consuming. There is a strong incentive to develop technologies that provide instantaneous measurements of fine-fuel moisture.…
Author(s): Devan A. McGranahan
Year Published:

During the End-Permian mass extinction event (EPME) there is extensive evidence for depletion of oxygen in the marine realm. Atmospheric models based upon biogeochemical cycling predict a comparable decline leading up to this event and have been…
Author(s): Zhiming Yan, Longyi Shao, I. J. Glasspool, Xuetian Wang, Juan Wang, Hao Wang
Year Published: