Rain shadow - a meteorological phenomenon that negatively affects rain and snow and raises temperatures. Details

Weather of Arabia - The phenomenon of rain shadow is one of the weather phenomena controlled by the terrain. It is a phenomenon present in many countries, including the Kingdom and the Levant, and the following report (Weather Sciences) provides details of that phenomenon.

What is the rain shadow phenomenon and how does it occur?

It is a phenomenon that occurs when the mountains intercept the humid winds if the mountains force the humid winds to ascend towards their slopes, and when the humid winds rise to the top of the mountains, the air cools and condenses from what forms the clouds and the rain falls on the opposite side of the wet winds, and when these winds descend towards the opposite side of the mountains they become The winds are down and thus lose their moisture and their temperature rises, which causes the clouds to disappear or to weaken greatly, so that the other side falls under the so-called rain shadow .

Negative effects of the rain shadow phenomenon on several aspects.

The areas affected by the phenomenon of rain shadow suffer from high temperatures due to the direction of the downward winds that heats themselves, and the lack of humidity is a contributing factor to the great rise in temperatures during the day and their accelerated fall at night, and the areas affected by the rain shadow suffer from a lack of rain and the matter in the snow instead of a lack of Vegetation cover is remarkable in those areas.

The most prominent areas affected by rain shadow in the Kingdom or in the Levant ...

Perhaps the phenomenon of rain shadow affects all parts opposite to the blowing of wet winds in the mountains according to their height above sea level. Perhaps the most prominent examples and places in which the phenomenon of rain shadow occurs in the eastern parts of Lebanon, especially the one behind Mount Hermon. As for the Kingdom, the most important areas affected by that phenomenon are the east of the capital. Amman, as the annual average of rain in the east of the capital, Amman, is 250 mm, while the annual rainfall in the west of the capital, Amman, is 500 mm.