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Wind speed versus barometric pressure.
Posted: Thu Dec 25, 2008 3:21 pm
by supercell1970
Is there a simple way to calculate wind speed AGL using barometric pressure? Or can it be done?
Re: Wind speed versus barometric pressure.
Posted: Fri Dec 26, 2008 3:45 pm
by wall_cloud
No, wind speeds are the result of the pressure gradient, not actual pressure
Re: Wind speed versus barometric pressure.
Posted: Sat Dec 27, 2008 1:02 am
by Ptarmigan
Hurricanes with much tighter gradients have stronger winds. Some hurricanes have really low pressure, but their wind speed is not high. For example:
Hurricane Ike-944 millibars 100 mph. Maximum wind extent (H:115 miles TS:275 miles)
Hurricane Charley-941 millibars 150 mph (H:30 miles TS:90 miles)
Re: Wind speed versus barometric pressure.
Posted: Sun Dec 28, 2008 9:31 pm
by Aslkahuna
Surface winds, particularly in areas of mixed terrain, are rather more complicated than just pressure gradient. Also with baroclinic systems you can also have a Thermal Wind contribution.
Steve