Skip to Main Content
A comparison of three approaches for simulating fine-scale surface winds in support of wildland fire management: Part I. Model formulation and comparison against measurementsAuthor(s): Jason M. Forthofer; Bret W. Butler; Natalie S. Wagenbrenner
Source: International Journal of Wildland Fire. doi: http://dx.doi.org/10.1071/WF12089.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
Download Publication (741.82 KB)
DescriptionFor this study three types of wind models have been defined for simulating surface wind flow in support of wildland fire management: (1) a uniform wind field (typically acquired from coarse-resolution (,4 km) weather service forecast models); (2) a newly developed mass-conserving model and (3) a newly developed mass and momentumconserving model (referred to as the momentum-conserving model). The technical foundation for the two new modelling approaches is described, simulated surface wind fields are compared to field measurements, and the sensitivity of the new model types to mesh resolution and aspect ratio (second type only) is discussed. Both of the newly developed models assume neutral stability and are designed to be run by casual users on standard personal computers. Simulation times vary from a few seconds for the mass-conserving model to ,1 h for the momentum-conserving model using consumer-grade computers. Applications for this technology include use in real-time fire spread prediction models to support fire management activities, mapping local wind fields to identify areas of concern for firefighter safety and exploring best-case weather scenarios to achieve prescribed fire objectives. Both models performed best on the upwind side and top of terrain features and had reduced accuracy on the lee side. The momentum-conserving model performed better than the massconserving model on the lee side.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationForthofer, Jason M.; Butler, Bret W.; Wagenbrenner, Natalie S. 2014. A comparison of three approaches for simulating fine-scale surface winds in support of wildland fire management: Part I. Model formulation and comparison against measurements. International Journal of Wildland Fire. doi: http://dx.doi.org/10.1071/WF12089.
Keywordsfire growth modelling, wildland fire decision support, wind modelling
- A comparison of three approaches for simulating fine-scale surface winds in support of wildland fire management. Part II. An exploratory study of the effect of simulated winds on fire growth simulations
- Development and evaluation of a Reynolds-Averaged Navier-Stokes solver in WindNinja for operational wildland fire applications
- A landscape-scale wildland fire study using coupled weather-wildland fire model and airborne remote sensing
XML: View XML