Plume Rise from GigaWatt Fires: Observations and Models
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چکیده
Data are presented from 15 prescribed fires of forest slash in the Pacific Northwest. Total energies varied between 3 and 35 TeraJoules (TJ}, maximum flame powers, P, between 0.4 and 6.9 GigaWatts (GW), and highest observed plume-top altitudes, Zo, between 700 and 3000 meters above the burn sites. For these fires a two-parameter empirical model gave Zm ≈ 1403 P0.36 meters, with rms errors of 390 meters. Terrain effects appear to be significant. We discuss a force-balance plume model as a framework for better measurements, when they become available.
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