Why are winters colder than summers, and why are winters much colder than summers?

Because the sun is in the southern hemisphere in winter, near the Tropic of Capricorn, and we are in the northern hemisphere, the energy of the sun's rays will be reduced to us, so the temperature will appear colder, on the contrary, people in the southern hemisphere, such as Australia, will be warmer in winter, because they are equivalent to the summer in our northern hemisphere If you still have questions about me, I suggest you ask your junior high school geography teacher, they should be able to give you the most detailed explanation, because I have the impression that this may be a general exam question

The Earth's orbit around the Sun is a nearly circular ellipse, and the Sun is located at a focal point of the elliptical orbit, so that the distance between the Sun and the Earth is constantly changing over the course of a year or even a day. At the beginning of January every year, the Earth is at the perihelion of its orbit around the Sun, and the distance between the Sun and the Earth reaches a minimum value, which is about 100 million kilometers. At the beginning of July every year, the Earth is located at the aphelion point of its orbit around the Sun, and the distance between the Sun and the Earth reaches its maximum value, which is about 100 million kilometers.

Compared with the average distance between the Sun and the Earth (100 million km), the difference in the distance between the Sun and the Earth in one year (100 million km) is almost negligible. Therefore, the change in temperature over the course of a year has nothing to do with the distance between the sun and the earth. The change in temperature over the course of a year is mainly related to the change in the angle of solar elevation.

In the northern hemisphere winter, the direct solar point is located in the southern hemisphere, the solar altitude angle in the northern hemisphere is small, the atmospheric path through which the same amount of solar radiation passes is relatively long, the solar radiation weakened by the atmosphere is more, and the solar radiation reaching the ground is relatively less. At the same time, due to the small solar altitude angle, the area of the same amount of solar radiation is large, and the ground per unit area receives less solar radiation. The temperature is relatively low.

In the summer of the Northern Hemisphere, the direct solar radiation point is located in the Northern Hemisphere, the solar altitude angle in the Northern Hemisphere is large, the atmospheric path through which the same amount of solar radiation passes is relatively short, the solar radiation weakened by the atmosphere is relatively small, and the solar radiation reaching the ground is more. At the same time, due to the large angle of solar altitude, the area of the same amount of solar radiation is small, and the ground per unit area obtains more solar radiation. The temperature is relatively high.

Also, in the northern hemisphere winter, when the days are shorter and the nights are longer, the caloric income is less and the expenditure is more. In the northern hemisphere summer, the longer the days and the shorter the nights, the more caloric income and the less expenditure. In addition, in the northern hemisphere winter, a cold high pressure forms over the land, and the center of the high pressure continuously transports cold air masses to the low latitudes, which exacerbates the coldness.

Because the sun is oblique, we can receive less energy in winter than in summer.

The Earth is farther away from the sun in winter than in summer.

The reason for the cold winter is that the amount of sunlight is reduced due to the decrease in the solar altitude angle, and the irradiation time is shortened.

1. The key factor for the earth's winter cooling is the inclination of the earth's axis of rotation, figuratively speaking, when the earth ushers in winter, the angle of the earth is tilted, when the sunlight shines on the inclined planet, most of the sunlight will be reflected away, and a large reduction in sunlight will naturally cause the temperature to decrease.

2. In China, which is located in eastern Asia, northwest winds from the Mongolia-Siberian region prevail in winter. Northwesterly winds originate from the heart of Asia and are cold and dry, and the winds are stronger than the summer monsoon, resulting in colder winters in most parts of China.

In winter, some people feel very cold, while others are comparatively less cold, which is due to physical differences. People who feel very cold tend to:

1. The ability of blood circulation and reflux is relatively weak.

2. Lack of yang energy in the body.

3. Weakness of qi, blood, spleen and stomach.

Therefore, in winter, in addition to wearing a little more clothes to protect from the cold and keep warm. It is necessary to pay attention to regulating the spleen and stomach, eat more positive food, and pay attention to strengthening the body.

This is because of the angle of sunlight.

The temperature of the four seasons is determined by the angle and time of day, and for us, those of us in the mid-latitudes of the Northern Hemisphere, the sun hits the ground almost vertically at noon around the time of the "summer solstice".

Around the time of the winter solstice, the sun shines very obliquely to the ground at noon. The size of the irradiation angle determines the amount of heat received by the earth, which causes the temperature to be high or low. In addition, around the "summer solstice", the sun rises from the northeast and sets in the northwest, and the sun is above the horizon for a long time, which makes the ground in a long period of sunlight and aggravate the rise of ground temperature.

On the contrary, around the "winter solstice", the sun rises in the southeast and sets in the southwest, and the sun is above the horizon for a very short time, and this situation of short days and long nights exacerbates the cooling of the ground. So the hot summer and the cold winter were formed.

Because the air humidity is low in winter, a little moisture on the surface of the body will quickly volatilize the atmosphere to remove moisture. Evaporation on the surface of the body will take away the heat, so the same temperature will feel colder in winter, and in summer, the air humidity is large, even if the surface of the body sweats a lot and there is no wind, it is easy to volatilize the air and take away the heat, so the human body will feel cool.

Summer is the second season of the year and is one of the four seasons. The high summer temperature in the northern hemisphere is the most significant climate characteristic, and depending on the region and the dry and wet environment, it will produce a hot and dry or hot and humid climate. Spring, summer, autumn, winter, summer is the best season for many crops to grow vigorously, sufficient light and suitable temperature and abundant rain provide the required conditions for plants.

Monsoon climate is the main feature of China's climate, in summer, affected by the warm and humid air flow from the ocean, high temperature, humidity and rain, rain and heat at the same time, which is conducive to the growth of crops. Crops enter the thriving phase during the summer months.