Olin Lathrop wrote: > Does the Foen wind actually make it all the way to Sweden? Probably it does not by definition as Wikipedia says "A foehn wind or f=F6hn wind is a type of dry down-slope wind that occurs in the lee (downwind side) of a mountain range". Sweden seems to be too far from the mountain range. I don't believe the positively charged particles within the wind affect human significantly. I've read somewhere another explanation that, as for me, looks a bit more realistic - humid airflow from the sea bumps into the mountain system; - some air flows would climb the mountain and then go down-slope; other air flows would move around/through the mountain range; - those "over-mountain" flows would became dry, dense and clear and would start loosing its temperature by radiation at night; - those "around/through" flows would remain humid, cloudy and thus retain their temperature and density; - more dense "over-mountain" dry flows would slide down into perpendicular lighter flows, and will generate low frequency air pressure oscillations; I got no idea what the frequency can be, perhaps an oscillation per minute or so. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .