How are the seasons of the year divided?

1. Astronomical division.

The spring equinox, summer solstice, autumn equinox, and winter solstice are the beginning of the four seasons;

2. Meteorological division method.

Spring from March to May, summer from June to August, autumn from September to November, and winter from December to February.

3. Solar term division method.

The beginning of spring, summer, autumn and winter is the beginning of the four seasons.

In addition, the climate seasonality index is based on the temperature method, which was proposed by Mr. Zhang Baokun in 1934 and is still used in meteorological business. In ancient China, 5 days were called a wait, and the waiting temperature is the average temperature of 5 days. However, in the climatic season, instead of a fixed 5-day period, a 5-day moving average is used, that is, the average is calculated as a group of the current day and the previous 4 days.

The four seasons are divided into: Spring, Summer, Autumn and Winter.

Spring, March, April, May; Summer, June, July, August; autumn, September, October, November; Winter, for December, January, February.

The four seasons alternate throughout the year, namely spring, summer, autumn, and winter.

How the seasons are formed.

There is an angle (23°26) between the Earth's axis of rotation and the Earth's orbit around the Sun (the ecliptic plane), so when the Earth revolves around the Sun, the position of the Sun directly on the Earth changes, from 23°26 S (Tropic of Capricorn) to 23°26 N (Tropic of Cancer).

When the sun is directly shining, the heat obtained by the earth's surface is high, and the temperature is high, which is summer; Conversely, when the sun is obliquely shining, the heat gained from the earth's surface is low, which is winter. When the sun shines directly into the Northern Hemisphere, it is summer in the Northern Hemisphere and winter in the Southern Hemisphere;

Conversely, when the sun shines directly into the Southern Hemisphere, it is summer in the Southern Hemisphere and winter in the Northern Hemisphere. When the sun reaches the Tropic of Capricorn, the winter solstice (around December 22) and the summer solstice (around June 22) are respectively. When the sun reaches the equator, the spring equinox (around March 21) and the autumn equinox (around September 21) are respectively.

This is a traditional, common method.

The corresponding dates of the Gregorian calendar are February 3 or 4 or 5, the beginning of summer is May 5 or 6 or 7, the beginning of autumn is August 7 or 8 or 9, and the beginning of winter is November 6 or 7 or 8.

Therefore, there are also simple months of February and April for spring, May and July for summer, August and October for summer, and November and January for winter. It almost corresponds to the division of the lunar calendar.

It is divided according to the orbit of the sun around the earth. It is divided into four seasons: spring, summer, autumn and winter, and spring is 2, 3, and 4 months. Summer, Autumn and Winter: 3 months.

How are the seasons of the year divided? All year round, of course, it is spring, summer, autumn and winter. It's only sorted according to the climate. This is the law of nature.

Spring, summer, autumn and winter, lunar spring is from January to March, summer is from April to June, autumn is from July to September, and winter is from October to December.

The seasons of the year are mainly separated by the position of the Earth in its orbit around the Sun.

Geography is taught in geography class.

While our earth is constantly revolving around the sun, it is also rotating around its own axis, thus forming the four seasons of spring, summer, autumn and winter, and the winter is warm and the summer is cold. We all know that there are 12 months in a year and four seasons of people. But dear children, you know how the four seasons are divided'Is it?

Why is it divided like that? Let's follow me to find the answer!

A year is 12 months, three months per quarter. According to the difference between the high temperature and the hot and cold bridge, people set March, April and May as spring; June, July, and August are designated as summer, and September, October, and November are designated as autumn; December, January, and February are designated as winter. China is vast, thousands of kilometers from north to south, so the same season, the temperature is very different, such as spring, the southernmost side is already wearing summer clothes, but the northernmost side is still wearing cotton clothes.

1. Astronomical division method: From the perspective of astronomical phenomena, the change of the four seasons is the seasonal change of the length of day and night and the height of the sun. In a year, the season with the longest days and the highest solar height is summer, the season with the shortest days and the lowest solar height is winter, and the transition season between winter and summer is spring and autumn.

2. Meteorological division method: In the meteorological department, the solar calendar usually takes March to May as spring, June to August as summer, September to November as autumn, December to February of the following year as winter, and often takes the month as the representative month of winter, spring, summer and autumn.

3. Ancient division method: February 4 or 5 of the beginning of spring is the beginning of spring, May 5 or 6 of the beginning of summer is the beginning of summer, August 7 or 8 of the beginning of autumn is the beginning of autumn, and November 8 or 9 of the beginning of winter is the beginning of winter.

4. Lunar Calendar Zoning Hunger and Filial Piety Division: Chinese folk are accustomed to use the lunar calendar to divide the four seasons. Spring is from January to March, summer from April to June, autumn from July to September, and winter from October to December.

The first day of the first lunar month is the first day of the year, and it is also the first day of spring, so it is also called the Spring Festival.