The Siberian High is growing stronger than usual, so how will it affect the climate in the Eastern Mediterranean?

Arab Weather - Specialists at the Arab Weather Regional Center are monitoring the latest updates issued by weather maps that indicate the unusual growth of the Siberian high in its homeland, "Siberia." The data shows that the air pressure in the region has reached more than 1042 millibars, with temperatures approaching -30 degrees Celsius.

What does the growth of the Siberian high mean?

Meteorologists at the Arab Weather Center indicated that the growth of the Siberian high means that the strength and scope of the Siberian high's influence is greater than usual. When this high grows, the atmospheric pressure increases at its center and its effects cover a wider geographical area. This usually happens as a result of a severe drop in temperatures in Siberia, which leads to the accumulation of cold, heavy air near the Earth's surface, thus increasing the atmospheric pressure, causing severe cold waves and reducing the chances of cloud formation and rainfall in the areas it controls.

The relationship between the Siberian High and its climatic impact on the Eastern Mediterranean

The weather conditions in Siberia, including the rapid cooling of the land due to low solar radiation, further contribute to the development of this high. Long nights and radiational cooling cause surface air temperatures to drop and become denser, which promotes the development of the Siberian High. The Siberian High is one of the major weather systems that leads to cold and dry winters in the eastern Mediterranean, with significant impacts on agriculture, especially in late autumn and during winter. The climatic effects of the Siberian High are:

Cold waves:

The rush of cold, dry air from the Siberian High towards the eastern Mediterranean leads to climatic cold waves, which contributes to a noticeable drop in temperatures, especially at night, where temperatures may drop below zero in some areas.

The Siberian High enhances the stability of the atmosphere and prevents the formation of clouds and precipitation, which leads to dry weather for long periods. The high weakens the arrival of rainy air depressions to the region, which limits the chances of rain.

Frequent frost formation:

The significant drop in temperatures caused by the Siberian High causes the possibility of frost formation, especially in high and agricultural areas, which poses a risk to agricultural crops. This is accompanied by cold north-easterly winds, which enhance the feeling of extreme cold and increase the dryness of the atmosphere.

Weakening of air depressions and a barrier stands in the way of their progress:

The Siberian High weakens the lows coming from the Atlantic Ocean and the Mediterranean Sea, which limits the effectiveness of rainy weather and increases the stability of cold and dry weather.

What is the relationship between the growing La Niña phenomenon and the strengthening of the Siberian High?

La Niña influences the strengthening of the Siberian High in several ways related to changes in ocean temperatures and weather patterns. When La Niña occurs, surface temperatures in the equatorial Pacific Ocean drop, resulting in broad atmospheric effects including greater cooling in high latitudes, including Siberia. This promotes the formation of cold, dense air masses, making conditions more favorable for the Siberian High to grow.

As temperatures drop, the air pressure in the region increases as cold, heavy air collects near the surface. As the pressure increases, the Siberian High becomes stronger, resulting in high air pressures that can reach over 1050 millibars.

Thus, La Niña contributes to the strengthening of the Siberian High, which leads to noticeable climate effects worldwide, especially in the Northern Hemisphere.