Definitions
from Wiktionary, Creative Commons Attribution/ShareAlike License.
 noun metrology Symbol for the
millibar , anSI unit ofatmospheric pressure equal to 10−3bars .
Etymologies
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Examples

Atmospheric air pressure is often expressed in millibars and sea level atmospheric air pressure is defined as 1013.25 mbar which is equivalent to 1 atm.

By comparison, the pressure today is about 1019 mbar.

By comparison, the pressure today is about 1019 mbar.

By comparison, the pressure today is about 1019 mbar.

By comparison, the pressure today is about 1019 mbar.

Why does the troposphere pressure greater than 200 mbar get colder as altitude increases?

If the pressure of Titan were 1000 mbar, its temperature would be about 267 °C.

Re:#298 – But hey, bogocane Chantal was the strrrongesssst cane this season with unbelievable 994 mbar, 50 mph and 0,608 ACE!

The atmospheric pressure measured at the two Viking sites varied over a Martian year between 7 and 10 millibars 1 bar is Earth sealevel atmospheric pressure, or 14.7 psi; 10 millibar, or mbar, is 1 percent Earth sealevel atmospheric pressure, with a yearround average of about 8 mbar observed at the higher altitude Viking 1 landing site on Chryse Planitia.

However, if the polar temperature should rise to a point where the vapor pressure is much greater than that which can be produced by the mass in the cap reservoir between 50 and 100 mbar then the cap will disappear and the atmosphere will be regulated by the regolith reservoir.
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