Skip to Main Content
Assessing Forest Canopy Impacts on Smoke Concentrations Using a Coupled Numerical ModelAuthor(s): Joseph J. Charney; Michael T. Kiefer; Shiyuan Zhong; Warren E. Heilman; Jovanka Nikolic; Xindi Bian; John L. Hom; Kenneth L. Clark; Nicholas S. Skowronski; Michael R. Gallagher; Matthew Patterson; Yongqiang Liu; Christie Hawley
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
Download Publication (1.0 MB)
DescriptionThe impact of a forest canopy on smoke concentration is assessed by applying a numerical weather prediction model coupled with a Lagrangian particle dispersion model to two low-intensity wildland (prescribed) fires in the New Jersey Pine Barrens. A comparison with observations indicates that the coupled numerical model can reproduce some of the observed variations in surface smoke concentrations and plume heights. Model sensitivity analyses highlight the eect of the forest canopy on simulated meteorological conditions, smoke concentrations, and plume heights. The forest canopy decreases near-surface wind speed, increases buoyancy, and increases turbulent mixing. Sensitivities to the time of day, plant area density profiles, and fire heat fluxes are documented. Analyses of temporal variations in smoke concentrations indicate that the eect of the transition from a daytime to a nocturnal planetary boundary layer is weaker when sensible heat fluxes from the fires are stronger. The results illustrate the challenges in simulating meteorological conditions and smoke concentrations at scales where interactions between the fire, fuels, and atmosphere are critically important. The study demonstrates the potential for predictive tools to be developed and implemented that could help fire and air-quality managers assess local air-quality impacts during low-intensity wildland fires in forested environments.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
CitationCharney, Joseph J.; Kiefer, Michael T.; Zhong, Shiyuan; Heilman, Warren E.; Nikolic, Jovanka; Bian, Xindi; Hom, John L.; Clark, Kenneth L.; Skowronski, Nicholas S.; Gallagher, Michael R.; Patterson, Matthew; Liu, Yongqiang; Hawley, Christie. 2019. Assessing Forest Canopy Impacts on Smoke Concentrations Using a Coupled Numerical Model. Atmosphere. 10(5): 273-. 24 p. https://doi.org/10.3390/atmos10050273.
Keywordssmoke dispersion, numerical simulation, wildland fire
- Multiscale simulation of a prescribed fire event in the New Jersey Pine Barrens using ARPS-CANOPY
- A Numerical Study of Atmospheric Perturbations Induced by Heat From a Wildland Fire: Sensitivity to Vertical Canopy Structure and Heat Source Strength
- Fire Behavior, Fuel Consumption, and Turbulence and Energy Exchange during Prescribed Fires in Pitch Pine Forests
XML: View XML