BJELASNICA & WIND
Bjelasnica is totally unpredictable and sometime dangerous mountain. Bosnian people saying Bjelasnica is mountain where you can expect four seasons in one day.
Mountaineers usually call Bjelasnica WILD MOUNTAIN. Peak of the mountain is meeting point of warm and cold air streams so its place where wind appear. It is a reason why wind is extremely strong sometime on Bjelasnica. Two weeks ago I meet Muhamed Sisic (Shishich) – very experienced mountaineer on the peak of Bjelasnica. He said to me that meteorologists in Weather Observatory measured highest wind speed 260 km/h (around 162 mph).
A wind rose is a graphic tool used by meteorologists to give a succinct view of how wind speed and direction are typically distributed at a particular location. Historically, wind roses were predecessors of the compass rose on maps, as there was no differentiation between a cardinal direction and the wind which blew from such a direction. Using a polar coordinate system of gridding, the frequency of winds over a 30-year period are plotted by wind direction, with color bands showing wind ranges. The directions of the rose with the longest spoke show the wind direction with the greatest frequency.
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24-Apr-2010 = 175 views