Results 21 to 30 of about 36,752 (122)

Incorporating a Canopy Parameterization within a Coupled Fire-Atmosphere Model to Improve a Smoke Simulation for a Prescribed Burn

Atmosphere, 2020
Forecasting fire growth, plume rise and smoke impacts on air quality remains a challenging task. Wildland fires dynamically interact with the atmosphere, which can impact fire behavior, plume rises, and smoke dispersion.
Derek V. Mallia, Adam K. Kochanski, Shawn P. Urbanski, Jan Mandel, Angel Farguell, Steven K. Krueger   +5 more
doaj   +3 more sources

The Short-Term Impacts of the 2017 Portuguese Wildfires on Human Health and Visibility: A Case Study

Fire
The frequency of extreme wildfire events (EWEs) is expected to increase due to climate change, leading to higher levels of atmospheric pollutants being released into the air, which could cause significant short-term impacts on human health (both for the ...
Diogo Lopes, Isilda Cunha Menezes, Johnny Reis, Sílvia Coelho, Miguel Almeida, Domingos Xavier Viegas, Carlos Borrego, Ana Isabel Miranda   +7 more
doaj   +2 more sources

Reconstructing Fire Progression from UAS Observations to Evaluate Bioaerosol Transport Sensitivity in Coupled Fire–Atmosphere Simulations

Fire
Bioaerosols released during wildland and prescribed fires may influence ecosystems, air quality, and microbial dispersal, yet their transport and deposition remain poorly understood.
Isaac Forrest, Ali Tohidi, Angel Farguell, Aurélien Costes, Leda N. Kobziar, Phinehas Lampman, Eric Rowell, Adam Kochanski   +7 more
doaj   +2 more sources

Coupled Atmosphere–Fire Modelling of Pyroconvective Activity in Portugal

Fire
This study investigates the physical interactions and between forest fires and the atmosphere, which often lead to conditions favourable to instability and the formation of pyrocumulus (PyCu). Using the coupled atmosphere–fire spread modelling framework,
Ricardo Vaz, Rui Silva, Susana Cardoso Pereira, Ana Cristina Carvalho, David Carvalho, Alfredo Rocha   +5 more
doaj   +2 more sources

Interactions Between a High-Intensity Wildfire and an Atmospheric Hydraulic Jump in the Case of the 2023 Lahaina Fire

Atmosphere
On 8 August 2023, a grass fire that started in the city of Lahaina, Hawai’i, grew into the deadliest wildfire in the United States since 1918. This wildfire offers a unique opportunity to explore the impact of high heat output on an atmospheric hydraulic
Clifford Ehrke, Angel Farguell, Adam K. Kochanski   +2 more
doaj   +2 more sources

Comment on Shamsaei et al. The Role of Fuel Characteristics and Heat Release Formulations in Coupled Fire-Atmosphere Simulation. Fire 2023, 6, 264

Fire
Accurate vertical distribution of fire-induced heat fluxes in the atmosphere is critical for realistic coupled fire–atmosphere simulations. In response to concerns raised by Shamsaei et al. (2023) regarding potential energy conservation issues in the WRF-
Aurélien Costes, Adam K. Kochanski
doaj   +2 more sources

Building a Fuel Moisture Model for the Coupled Fire-Atmosphere Model WRF-SFIRE from Data: From Kalman Filters to Recurrent Neural Networks [PDF]

arXiv.org, 2023
The current fuel moisture content (FMC) subsystems in WRF-SFIRE and its workflow system WRFx use a time-lag differential equation model with assimilation of data from FMC sensors on Remote Automated Weather Stations (RAWS) by the extended augmented ...
J. Mandel, J. Hirschi, A. Kochanski, Angel Farguell, J. Haley, D. Mallia, B. Shaddy, A. Oberai, K. Hilburn   +8 more
semanticscholar   +1 more source

Fire Intensity and spRead forecAst (FIRA): A Machine Learning Based Fire Spread Prediction Model for Air Quality Forecasting Application. [PDF]

Geohealth
Abstract Fire activities introduce hazardous impacts on the environment and public health by emitting various chemical species into the atmosphere. Most operational air quality forecast (AQF) models estimate smoke emissions based on the latest available satellite fire products, which may not represent real‐time fire behaviors without considering fire ...
Hung WT, Baker B, Campbell PC, Tang Y, Ahmadov R, Romero-Alvarez J, Li H, Schnell J.   +7 more
europepmc   +2 more sources

Wildfire smoke-plume rise: a simple energy balance parameterization [PDF]

Atmospheric Chemistry and Physics, 2021
The buoyant rise and the resultant vertical distribution of wildfire smoke in the atmosphere have a strong influence on downwind pollutant concentrations at the surface. The amount of smoke injected vs.
N. Moisseeva, R. Stull
doaj   +1 more source

Sensitivity of Burned Area and Fire Radiative Power Predictions to Containment Efforts, Fuel Density, and Fuel Moisture Using WRF‐Fire

Journal of Geophysical Research: Atmospheres, Volume 128, Issue 18, 27 September 2023., 2023
Abstract Predicting the evolution of burned area, smoke emissions, and energy release from wildfires is crucial to air quality forecasting and emergency response planning yet has long posed a significant scientific challenge. Here we compare predictions of burned area and fire radiative power from the coupled weather/fire‐spread model WRF‐Fire (Weather
Francis A. Turney, Pablo E. Saide, Pedro A. Jimenez Munoz, Domingo Muñoz‐Esparza, Edward J. Hyer, David A. Peterson, Maria E. Frediani, Timothy W. Juliano, Amy L. DeCastro, Branko Kosović, Xinxin Ye, Laura H. Thapa   +11 more
wiley   +1 more source