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Since Mars has no precipitation that they tell us and the planet is very arrid and desolate (so they tell us) then there would be no cycles in the weather pattern, unless some noticeably disturbance on the ground or otherwise affected the airstream. Thus the "wind" should always be blowing at a measured rate and have definable periods of "heavy" and "light" wind patterns. As far as my understanding Mars "wind storms" have no predictable pattern and scientists have no idea what causes them.
The evaporation of water does not cause wind. The coriolis effect doesn't cause wind either really, it does bend it though. Wind is caused by air flowing from high pressure areas to low pressure areas. As simple as that.
Wind can also be thought of one way that the atmosphere moves excess heat around.
Originally posted by robertfenix
High/ Low pressure differentails are caused directly by temperature changes. Since Mars has pretty much a global wide temperature it is hard to say that minor variations could cause such dramatic effects.
(notice how they do not explain how heat can be absorbed and released rapidly by what means does this happen? This is why this is a ?theory? of how the storms are generated)
Mars global wide has an AIR temp of less then 32 degrees F. In these conditions you can not generate the typical High/Low pressures zones as you see on Earth.
As the polar caps move into the position of Equitorial heating the frozen CO2 on the ground converts to gas and rises up of the surface like a vacuum
As the trapped CO2/Sand deflects enough thermal energy to prevent the CO2/ from escaping the soil.