The same phenomenon provides ‘lift’ above the rear of an aircraft wing. This type of device can be used in situations where airflow is absent at ground level due to obstructions or the density of development, and the airflow is ‘skimming’ at roof level. Convective airflow will also occur if there is a temperature differential, but the pressure differential is likely to be the most effective. Target Winds Since the most uncomfortable weather usually occurs on summer afternoons, the “target winds” for the Townsville region are the north-easterlies, being the most reliable winds at this time (60% probability). The Wind Roses below (generated by Ecotect) indicate the situation for the region.
Designing for climate research paper
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