Explain the formation of hot and dry wind

Windy wind (wind foehn) is a wind phenomenon after crossing the mountain becomes dry and hot.

Windy wind, also known as Laos wind or hot dry southwest wind.

In the world, windy wind has many different names such as: Laos wind or hot dry southwest wind in Vietnam, Wind Chinook in America and Canada, or wind Bilbao in Spain.

A windy phenomenon occurs when the wind with moisture is blocked by a mountain on the way. At that time, the wind was forced to climb the slope to cross the mountains.

The higher the temperature, the cooler (on average, every 100m, the air temperature decreases by 0.6 degrees C). This causes the moisture in the wind to condense, form clouds and cause rain in the mountainside to catch the wind, at the same time. reduces wind pressure.

When crossing the top of the mountain, the wind becomes dry gas and moves down the slope. The dry air means less clouds are formed on the flank. So the more the wind receives more heat from the Sun.

Besides, the more you move down to the foot of the mountain, the more the wind is compressed due to the denser air density. This process causes heat to cause the temperature of the wind to increase. As a result, the wind after coming down the mountain becomes very dry and hot. The higher the mountain range, the cooler and hotter the wind.