Article:

In relation to cities, wind is one of the less studied meteorological parameter. Constant vertical rate variations from meso scale to micro scale, altogether with strenght, direction, velocity of the urban canyon, makes the wind a complex subject of study. To achieve this, a methodological strategy that addresses the wind''s multi dimensionality was raised. It was aplied to Punta Arenas, the southernmost city in the world, where most of the time winds come 90% from the same direction with speeds reaching 128 km/h. Wind''s constant directional behavior allows the recognition of areodynamic phenomena produced, in the first instance, for the wind profiles influenced by the urban rugosity and then, at morphologycal level, the aerodynamic behavior of the layered fluids over the building bodies, generating a regular pattern between solids and fluids. The strong winds in cities with cold climate influence the use of public spaces, which, not being designed under this conditions, do not develop proper levels of thermal comfort.