How many climate zones are there on earth
Hanisauland: Lexicon @todo: from Preprocess
There are five major climatic zones on earth. You can learn more about these zones here.
The northern polar zone extends from the North Pole to the Arctic Circle. We call this area the "Arctic".
The North Pole lies over a 4,000 meter deep sea basin covered in ice. The ice sheet is three to four meters thick and has crevices and cracks.
Polar regions are cold deserts. The average temperatures are usually below zero degrees and can drop to minus 45 ° Celsius. Only in summer there is a short period of plus degrees. Then the sun does not go down at all, it is light for 24 hours. In winter, however, the sun does not show itself at all.
Due to the shallow angle of the sunlight, no plants can grow here, the landscape consists of an ice desert.
The subpolar zone forms the transition from the polar zone to the temperate zone. It only occurs in the northern hemisphere. The only exception is Cape Horn, a headland in Chile that also belongs to the subpolar zone.
In the subpolar zone, temperatures between minus 20 ° and plus 5 ° Celsius prevail. The ground only thaws for a short time; only then can plants grow. There is hardly any rainfall. The steppe landscape there is called "tundra".
The temperate zone lies between the 40th and 60th parallel. Most of Europe, including Germany, as well as large parts of North America and Asia are located in it.
The temperatures here reach an annual average of 5 ° Celsius to 15 ° Celsius. In the temperate zone, the seasons play a major role. Depending on the season and the position of the sun, the days are sometimes shorter, sometimes longer. In summer it can stay light for up to 16 hours.
Precipitation occurs all year round and the weather is often inconsistent. Coniferous, mixed and deciduous forests grow in the temperate zone.
Subtropics is the name given to the climatic zone between the tropics and the temperate zone, roughly between the 20th and 40th parallel north and south. It is very warm in summer and not particularly cold in winter. The average temperature is between 18 ° and 22 ° Celsius. Depending on how much precipitation falls, there are different vegetation zones.
In the subtropical zone there are regions where there is hardly any precipitation. There are deserts like the Sahara or the Atacama Desert. In contrast, in East Asia, East Australia and on the east coast of the USA there is a lot of rainfall throughout the year. Where it is dry in summer and humid in winter, such as in the Mediterranean region, there is great biodiversity.
The tropics lie between the northern and southern tropics and stretch like a belt around the equator. Average temperatures here range from 23 ° Celsius to 26 ° Celsius.
The tropics receive most of the solar radiation in the world and form the earth's heat belt. There are no seasons in the tropics. Days and nights are the same length.
There are different vegetation zones depending on how much rain falls and how much water can evaporate. Some tropical regions close to the equator are always humid. The huge, very species-rich rainforests are typical of this zone. In other tropical regions, the rainy season and the dry season alternate. They are called "alternately humid tropics". Moist savannahs predominate there.
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