Millibars.
mb is a unit of measurement for pressure, 1 mb is 0.001 bar. mb is an abbreviation for millibar 1 bar is roughly atmospheric pressure
1013 mb
millibars. One one-thousandth of atmospheric pressure.
approx 330 mbar
Formulas for atmospheric pressure variation with altitude. Scroll down to related links and look at "Atmospheric pressure - Wikipedia".
Formulas for atmospheric pressure variation with altitude. Scroll down to related links and look at "Atmospheric pressure - Wikipedia".
Well this is a twofold answer because pressure itself does not mean anything when it comes to wind but rather pressure gradient or how fast the pressure drops over a given area. The faster the pressure drops over a small area the stronger the wind is forced to blow.Now lets take 2 examples here: atmospheric pressure 915 mb pressure drop: 25 mb Distance: 100 miles pressure drop/mile = 1/4 mb atmospheric pressure: 990 mb pressure drop: 25 mb Distance: 100 miles pressure drop/mile = 1/4 mb in these 2 situations the wind would blow the same speed. However like most situations the standard air pressure outside of the system would be around the same pressure or around 1010 mb so if we have the same 2 storms again but one of the storms is much larger then the other storm here is the result: atmospheric pressure 915 mb pressure drop: 95 mb Distance: 380 miles pressure drop/mile = 1/4 mb atmospheric pressure: 990 mb pressure drop: 20 mb Distance: 80 miles pressure drop/mile = 1/4 mb Again the wind speed would be the same since we are still falling at 1/4 mb per mile. So atmospheric pressure, storm size, surrounding air pressure, and other factors all come into play here... however if you had 2 of the same sized storms in the same atmospheric conditions but one had a pressure of 915 mb and the other had an air pressure of 990 mb the one with the 915 would have a higher wind speed due to a higher pressure gradient.
Millibars is spelled as "millibars." It is a unit of measurement used in meteorology to measure atmospheric pressure. One millibar is equal to one thousandth of a bar, which is approximately equal to the average atmospheric pressure at sea level.
Earth doesn't have one continuous, constant atmospheric pressure, it varies both spatialy and temporally. Assuming you're talking about the atmospheric pressure at the Earth's surface, the "standard" atmospheric pressure is 1000 millibars (mb), however pressures can range anywhere from ~875 mb (in intense low pressure areas such as the center of tropical cyclones) to ~1080mb.
MB in weather stands for Millibars, and is a measure of pressure in the atmosphere.
It isn't constant anywhere, no. 1013.25 mb is simply the average pressure, which is particularly important at sea level because that is how observations are standardized. But atmospheric pressure always varies no matter where you are, as a consequence of having weather.
The standard atmospheric pressure is 14.7 psi which is equal to 1014 millibars and 760 mm Hg. Therefore 606 mm Hg = 606/760 of an atmosphere = 0.797 atm. Therefore in millibars it is 0.797 x 1014 = 808.5 mb. Now 1 mb = 100 Pa = 0.1 kPa, so 808.5 mb = 80.85 kPa.