Mongolia: Russian-Siberian anticyclone brings an accurate record of atmospheric pressure

Mongolia: Russian-Siberian anticyclone brings an accurate record of atmospheric pressure

During winter the vast plains of the Eurasian continent are subject to a Strong temperature cooling. This marked cooling is facilitated by a series of aforementioned factors; Central and Eastern Siberia, as well as Mongolia, They live far away from the mitigation effect of the sea, Here the temperature during winter can be calm without constraints, but how will you get the high pressure values ​​recorded yesterday in Mongolia’s phase?

The development of the so-called “Russian-Siberian anticyclone” lies in the first outbreaks of Arctic air that occur in the region in the autumn months. The arrival of snow over large areas of the Siberian Plain, Radiation promotes cooling during long winter nights. Snow-covered and frozen soil during the day, Albendo increases the effectThe snow cover reflects the sun’s rays in the upper atmosphere and cannot heat the air temperature.

The mass of cold air remains trapped in the lower layers of the atmosphere, the temperature on these lands in winter can be extremely cold. In this case the increase in atmospheric pressure is not a response to the presence of an anticyclone of a dynamic nature, namely governed by a mass of hot air – but This is the result of the load of cold air Which is very dense, causes an increase in atmospheric pressure.

Record values ​​that have been registered Tuesday 29 December On Mongolia, Are the most tangible expression of a complete thermalization of high pressure at the Eurasian Steps. Here we have extremely cold air on the ground. Who knows if even a small part of this cold wind does not have the strength to reach Europe during winter?

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In the meantime, let us reflect on these incredible atmospheric pressure values.

1090,4 hPa a Gandan Huryee

1091,3 hPa a Nömrög

1091,7 HPa in Ban-uul

1092,4 hPa a binary

1093,6 hPa a Tosontsengel

1094,3 hPa a Tsetsen Uul

1094,9 hPa a Bajdrag

These data were transmitted by Géoclimat.


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