| General learning outcome: | GENERAL WEATHER: | Specific learning outcome: | Vertical air flow and the vertical structure of the atmosphere are important for escalated fire. | Topic: | The mixing layer. |
Expert Awareness for Fire Behaviour Analysts
There are two good sources of information about the mixing layer.
Firstly Aerological Diagrams, generally flown in the morning, give a feel for the maximum development of the mixing layer. The maximum heating adiabats on the Diagram also indicate what will happen when the daytime heating breaks down the mixing layer.
Secondly NexGen provides maps of mixing depth. There is currently some inconsistency within NexGen as to whether it shows the current depth or the maximum depth.
Figure 1. Analysis of an Aerological Diagram.
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