Thermal depression.. How do temperatures rise despite the decrease in atmospheric pressure?

Weather of Arabia - When the depression is mentioned, the decrease in temperatures may be the first thing that comes to mind, given that the depression is largely responsible for weather fluctuations accompanied by severity and instability when it originates in any spot on the surface of the earth, except that temperature depressions ( Such as the five-point depression) came opposite to expectation, as it brings a rise in temperatures despite the decrease in atmospheric pressure, so how does that happen?!

What is a thermal depression?

A thermal depression is defined as: a depression resulting from the intense heating of the earth’s surface, so the air in contact with it heats up and rises to the top, which causes a drop in pressure in that region, and the air begins to move from areas of high pressure towards areas of low pressure to gather there, and an upward movement is formed, but it does not exceed the level of 700 hectopascals (ie, it does not exceed a height of 3000 m), because the winds accompanying these depressions are weak.

It is noteworthy that depressions are divided into several types according to the method of ascent that formed the depression, or the source of energy that causes the air to rise, as solar energy is stored in tropical air masses and released again in depressions in the form of mechanical energy.

Why do temperatures rise despite the decrease in atmospheric pressure?

It is logical that the geographical ranges in which thermal depressions are formed are those that have a high surface temperature, as the air in contact with the earth's surface heats up and rises very quickly and in huge quantities over large areas, which causes the phenomenon of pressure drop.

Other weather manifestations accompany the low temperature

Thermal depressions are accompanied by a rise in temperatures most of the time, and at times they are responsible for the occurrence of heat waves in the region. In the upper layers of the atmosphere, forming unstable weather conditions that result in the formation of cumulus thunderstorms and precipitation despite the high temperatures.

In many cases, these depressions are accompanied by hot, dry winds laden with dust, as is the case in the Khamaseen wind, which is provoked by a thermal depression.

areas forming thermal depressions

Among the regions most qualified for this are the tropics, as well as the wide rocky islands surrounded by water, and these depressions are generated above the surface of the water in winter due to the different thermal physical properties of water and land. For example, the seasonal thermal depression is formed over the Indian subcontinent as a result of the process that we mentioned earlier.

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