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Various atmospheric properties such as wind speed and direction, moisture content and temperature may have very different values at different heights. These values are also likely to change throughout the day. Such changes may have significant impacts upon smoke dispersion and also fire behaviour.
The Bureau of Meteorology maintains a networks of stations making upper air soundings. These provide a vertical profile of the variable atmospheric properties but the upper air soundings are only made twice daily at most, and not always at times of interest to fire practitioners. To partly rectify this vertical profiles from all sites which are used as smoke dispersion sources are created from the BOM's numerical weather prediction model mesoLAPS. The profiles forecast the likely state of the atmosphere up to 36 hours into the future
The following link shows examples of the model profiles:
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