millibar

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millibar

a cgs unit of atmospheric pressure equal to 10--3 bar, 100 newtons per square metre or 0.7500617 millimetre of mercury

millibar

[′mil·ə‚bär]
(mechanics)
A unit of pressure equal to one-thousandth of a bar. Abbreviated mb. Also known as vac.

millibar

A unit of measurement of pressure. In the standard atmosphere, air exerts a pressure of one bar at sea level. A bar is equal to 106 dynes per square centimeter. One bar = 1000 millibars = 750.8 mm Hg = 29.53 in Hg. The average sea level pressure is 1013.2 millibars or 29.92 in of mercury. Altimeter settings used to be given in millibars but now are more likely to be given in hPa (hectopascals). The values of millibars and hectopascals are the same.
References in periodicals archive ?
Sparks at this pressure with pressure of 1018 millibars has been developed over Tehran and even has reached to Eastern parts of Iran which due to making temperature inversion and lack of air ventilation in lower layers, weather of the region will be entirely sustainable and the pollution will relatively be high, which in graph 5, amount of pollution at some stations for 9 November 2009 have been shown.
In this pattern a high pressure curve has entered from the north of Afghanistan, and its western spark has surrounded most parts of Iran in particular central Iran and Tehran with the curve of 1020 millibars.
This disturbing force is negligible at normal pressure, but when the pressure within the vacuum chamber is reduced beyond the millibar (for instance to avoid other disturbances due to air convection or to minimize the air friction on the oscillating pendulum) the meatus optical thickness further reduces, so as to attain the above condition about 1 mean free path.
Comparing with many measurements made in last decades with high vacuum technology [11-19] we notice that the vacuum pressures (when reported) were not comprised between the millibar and the nanobar.
A category 4 hurricane would have 240 kilometer-per-hour winds and measure 933 millibars on the barometer.
The lowest pressure of 949 millibars was over Edinburgh, but the greatest official wind speed of all was 107mph recorded at Aberporth Met Office , near us at Gwbert.
For every drop in atmospheric pressure of 10 millibars, the risk of DVT rose two per cent.
In Cuzco, the atmospheric pressure is approximately 680 millibars (sea level atmospheric pressure is 1,000 millibars) -- this translates to a 30% fall in available oxygen in the air.
The record-breaking barometer reading of 951 millibars was taken yesterday in East Yorkshire.
Professor Philippe Amouyel, an epidemiologist at Lille University School of Medicine, who led the study, said: "When atmospheric pressure rose by 10 millibars above sea level there was an 11 per cent increase of heart attack rates, and when pressure dropped by 10 millibars there was a 12 per cent increase.
A LOW pressure of 971 millibars at Aberdeen was a sure sign of a ferocious storm on April 19.
Atmospheric pressure rises and falls of as little as 10 millibars have been linked to higher risk of heart attacks.