What is the standard for cold areas?

Alpine region refers to a particularly cold climate region formed by high altitude or high latitude.

Mountain in geographical sense refers to a climatic feature. Generally, it describes a particularly cold climate zone formed at high altitude or high latitude.

The high altitude and cold climate are because human beings mainly live in the troposphere atmosphere on the earth's surface. In this circle, the change of temperature has a certain relationship with altitude, that is, the temperature will drop by about 0.6 degrees Celsius every time the altitude increases 100 meters. According to this truth, the higher the altitude, the colder the climate.

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Extended data

Characteristics of high mountain areas:

Hypobaric hypoxia, atmospheric pressure changes with altitude, and the partial pressure of various gases that make up the atmosphere also changes with altitude, that is, it decreases with altitude. When the oxygen content and oxygen partial pressure in the atmosphere decrease, the oxygen partial pressure in human alveoli will also decrease, the oxygen diffused into the blood of pulmonary capillaries will decrease, and the arterial oxygen partial pressure and saturation will also decrease.

The weather is cold and dry, and the temperature drops gradually with the elevation. Generally speaking, the temperature drops by about 6℃ for every increase of1000m. In most parts of the plateau, the air is thin and dry, and some areas are cloudy. During the day, the ground receives a lot of solar radiation energy, and the temperature near the ground rises rapidly. At night, the ground heat dissipation is very fast, and the ground temperature drops sharply.

The sunshine time is long, the radiation is strong, the plateau air is thin and clean, the dust and water vapor content are low, the atmospheric transparency is higher than that in the plain area, and the solar radiation transmittance increases with the elevation. The effects of strong ultraviolet rays and solar radiation are mainly that exposed skin and eyes are easily damaged, and skin damage is manifested as sunburn, edema, pigmentation, skin thickening and wrinkles.

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