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16th Jan 2009, 08:29

#5 (permalink)

airborne_artist

Red On, Green On

Join Date: May 2004

Location: Between the woods and the water

Age: 24

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Think of low air pressure as a Hoover, moving all the muck and dust away, even in low wind speeds. High pressure is a cushion, pushing down the dust, water vapour etc, and compressing it, close to the surface.

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