Wildfire smoke-plume rise: a simple energy balance parameterization
نویسندگان
چکیده
Abstract. The buoyant rise and the resultant vertical distribution of wildfire smoke in atmosphere have a strong influence on downwind pollutant concentrations at surface. amount injected vs. height is key input into chemical transport models modelling frameworks. Due to scarcity model evaluation data as well inherent complexity plume dynamics, injection predictions large uncertainties. In this work we use coupled fire–atmosphere WRF-SFIRE configured large-eddy simulation (LES) mode develop synthetic dataset. Using numerical data, demonstrate that crosswind integrated for fire arbitrary shape intensity can be modelled with simple energy balance. We introduce two forms updraft velocity scales exhibit linear dimensionless relationship penetration distance through daytime convective boundary layers. Lastly, LES prescribed burn constrain evaluate model. Our results suggest proposed parameterization mean function scale offers reasonable accuracy (30 m errors) little computational cost.
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ژورنال
عنوان ژورنال: Atmospheric Chemistry and Physics
سال: 2021
ISSN: ['1680-7316', '1680-7324']
DOI: https://doi.org/10.5194/acp-21-1407-2021