A soldier in the Tibet Military Region froze when he opened a bottle of mineral water! Why is it so cold there?

A bottle of mineral water in the Tibet Military Region freezes instantly when it is opened, which shows that it is not easy for the PLA stationed in Tibet. So why is the climate in Tibet so cold?

As we all know, the temperature of a place is related to many factors, the most direct is latitude, followed by altitude, weather conditions and other factors.

First of all, Tibet is located at 20 degrees to 30 degrees north latitude, with complex climate types and great vertical changes. From southeast to northwest, it is tropical, subtropical, temperate plateau, sub-frigid plateau and frigid plateau. In cold areas, the weather is very cold. Different geographical latitudes receive different heat, resulting in different climates; Generally, the higher the latitude, the lower the temperature.

Secondly, Tibet has a high altitude. Tibet is located in the west and south of the Qinghai-Tibet Plateau, accounting for more than half of the Qinghai-Tibet Plateau. The area above 4000 meters above sea level accounts for 85. 1% of the total area of the whole region. Roof of the world? And then what? The roof of the world? It is the highest place in the world. High altitude means high air pressure. We all have experience. When climbing a mountain, the higher the mountain, the lower the temperature. Because of the high altitude in Tibet, the temperature in Tibet is lower than that in the same latitude, even in summer. In winter, this difference is more obvious because of the reduction of solar radiation.

In addition to latitude and altitude, weather conditions are also a key factor. This year, most parts of China have been affected by the cold current, and the temperature in most places has reached the lowest in history, which has also led to a colder winter in Tibet.

The rapid freezing of a bottle of water is not only related to temperature, but also to air pressure. Tibet has thin air, low air pressure and low oxygen content. The average air density is 60%-70% of the air density at sea level, and the oxygen content in plateau air is 35%-40% lower than that at sea level. Therefore, when the People's Liberation Army of Tibet Military Region opened a bottle of mineral water, it froze instantly.