Why are the temperatures different all over the world?

The physical quantity indicating the degree of air heat and cold is called air temperature, or air temperature for short. Temperature is one of the important factors to describe the atmospheric conditions. Usually, the temperature we say refers to the air temperature at a height of 1.5m above the ground.

Time distribution of temperature

Refers to the time and regular changes of the highest and lowest temperatures in the world and a certain area. On land, the highest temperature of 1 this month appears at 2 pm every day, which is about 14. The lowest value appears around sunrise. On land, the highest temperature in the northern hemisphere appears in July, and the lowest temperature appears in 65438+ 10. The highest value in the southern hemisphere appeared in 65438+ 10, and the lowest value appeared in July. In the ocean, the highest temperature in the northern hemisphere appears in August, the lowest temperature in February, the highest temperature in the southern hemisphere in February and the lowest temperature in August. In short, the time distribution of temperature is high in summer and low in winter. There are also differences in temperature between years.

Diurnal variation of temperature

It refers to the periodic and regular change of temperature in a day, which is called daily change of temperature. On land, the temperature has a maximum and a minimum in a day. The highest temperature appears at 2 pm every day, that is, around 14, and the lowest temperature appears around sunrise. The change of temperature in a day; Starting from the lowest value around sunrise, it rises with time and reaches the highest value around 2 pm. After that, it decreases with time and reaches the lowest value around sunrise. This periodic and regular temperature fluctuation is the daily change of temperature.

diurnal temperature range

Refers to the difference between the highest temperature and the lowest temperature in a day in an area, which is called the daily range. The highest daily temperature in mainland China appears around 2 pm, and the lowest appears around sunrise. The difference between them is the daily temperature difference on land.

Annual variation of temperature

It means that the temperature changes periodically and regularly every year, which is called the annual change of temperature. The temperature in mainland China is low in winter and high in summer. It can be seen that the temperature in most parts of the earth has a maximum and a minimum in a year. The highest value appeared in July, and the lowest value appeared in 65438+ 10. The highest temperature in the ocean appears in August and the lowest temperature in February. In the southern hemisphere, the highest and lowest values appear on the mainland and the ocean, just the opposite of the northern hemisphere.

annual range of temperature

Refers to the difference between the highest monthly average temperature and the lowest monthly average temperature in an area. In the northern hemisphere of the mainland, the average temperature in 1 year is the lowest, and the average temperature in July is the highest. The difference between them is that the temperature in a certain area in the northern hemisphere is annual range. On the southern hemisphere continent, the opposite is true. The temperature in the northern hemisphere ocean changes all year round, which is called the difference between the average temperature in February and the average temperature in August. The annual variation range of temperature in the southern hemisphere ocean is just the opposite. Temperature annual range is one of the important parameters of different climatic characteristics.

Because of the different geographical orientation, the temperature is different. This is a general and personal problem. The weather forecast is the average of an area. For example, the average height of students in a class is 1.6 meters. Some students must be tall, and some students must be short. Similarly, the weather forecast you get is the average temperature in your area. Specifically, it is cooler in the morning and evening and hotter at noon. The temperature is high in places with many houses and low in places with few houses. It's hotter in the sun and colder behind!