Figure 4
Hodograph from Albany airport constructed using radiosondes conducted at 0800 LT. Graphs to the left are 3 dimensional, showing height of wind direction and speed. Graphs to the right show a top-down view with the bottom of the column indicated by a red arrow. Negative wind directions indicate 90 -270 °, and negative wind speeds indicate 180 -360°.
Source publication
On 8th Nov 2017, two pyrocumulonimbus clouds (pyroCb) formed over a prescribed burn conducted near Rocky Gully in southwest Western Australia. The Table Hill burn (FRK_053) was conducted over the 6th – 9th Nov and targeted two adjacent cells of primarily jarrah (Eucalyptus marginata) and marri (Corymbia calophylla) open forest. The first pyroCb for...
Context in source publication
Context 1
... c-Haines value was 9.3, indicating an unstable atmosphere (Mills and McCaw 2010). Hodographs from 8 th Nov showed wind directions changing up the atmospheric profile in a way that might create a natural vortex (Fig 4). Aerial photographs taken along the S boundary on the 8 th show somewhat narrow columns that appear to have a twisting motion. ...
Citations
Wildland fires are among the most complicated environmental phenomena to model. Fire behavior models are commonly used to predict the direction and rate of spread of wildland fires based on fire history, fuel, and environmental conditions; however, more sophisticated computational fluid dynamic models are now being developed. This quantitative analysis of fire as a fluid dynamic phenomenon embedded in a highly turbulent flow is beginning to reveal the combined interactions of the vegetative structure, combustion-driven convective effects, and atmospheric boundary layer processes. This book provides an overview of the developments in modeling wildland fire dynamics and the key dynamical processes involved. Mathematical and dynamical principles are presented, and the complex phenomena that arise in wildland fire are discussed. Providing a state-of-the-art survey, it is a useful reference for scientists, researchers, and graduate students interested in wildland fire behavior from a broad range of fields.
