Distribution law of world temperature

The distribution law of world temperature is as follows:

① From the latitude position: the temperature gradually decreases from low latitude to the poles;

② From the position of land and sea, the land temperature is higher in summer and the ocean temperature is higher in winter.

③ From the altitude: the higher the terrain, the lower the temperature, and the temperature drops by 0.6℃ for every elevation of 100 meters.

The natural geographical environment we live in includes topography, climate, hydrology, biology and soil, among which topography and climate are two decisive natural factors, which will affect other natural geographical factors such as hydrology, biology and soil.

Climate is composed of temperature, precipitation, light and other factors. When analyzing the temperature characteristics of a region, we mainly start with the annual average temperature and the temperature in annual range.

There are many factors that affect the temperature in an area, including latitude, topography (altitude), land and sea location, ocean currents, weather conditions, human activities and so on.

"Annual average temperature" is the abbreviation of annual average temperature, which refers to the arithmetic average of daily average temperature of all days in a year, but it is often calculated by monthly average temperature, that is, the average temperature of each month in a year is accumulated and divided by 12.

Variation law of annual average temperature in the world

1, decreasing from equator to poles.

2. The temperature in the tropics is higher than 20 degrees Celsius.

3. The cold area is lower than-10 degrees Celsius.

Variation law of annual precipitation in the world

1, decreasing from equator to poles.

2. The precipitation on the east coast of the mainland near the Tropic of Cancer is more than that on the west coast.

3. There is less precipitation in temperate mainland and more water in coastal areas.

cause

Although there are different standards for high temperature in different parts of the world, the causes of high temperature weather in different parts of the world are similar. There are mainly the following three aspects:

1, weather system trigger: the formation of high temperature is often directly caused by a specific weather system, and the most typical and common one is the subtropical high, which is known as the "high temperature messenger". In addition to subtropical high, continental warm high pressure, tropical cyclone, hot low pressure, weak cold front and other weather systems will also give birth to high-temperature heat waves.

2. Global warming provides the climate background: Under the influence of global warming, extreme high temperature events become more and more frequent.

3. Urban heat island effect "adding fuel to the fire": Urban heat island effect refers to the phenomenon that the temperature in the city center is higher than that in the suburbs. With the acceleration of urbanization, the urban heat island effect is more obvious, which undoubtedly contributes to the high temperature weather.