It s already in Sanjiu, will the weather get colder and colder next?

Yes. This is because after entering this solar term, the weather will get colder and colder, and then it will also lead to a significant drop in temperature, and most people will wear long down jackets to keep warm at this time.

Yes, because the temperature will gradually drop from the beginning of Sanjiu, so when it comes to walking on the ice in Sanjiu, the weather will get colder and colder today.

The weather will get colder and colder, and there will be a wave of cold air coming.

Because of the unusually cold during the 29th period, our country is still in the final stage of the last round of cold wave, and the temperature has not risen much, and it is expected that there will be two rounds of weak cold air in a row, and it has encountered a very rare cold, so it will also feel colder.

The ground receives less solar heat, so that the heat dissipation at night exceeds the heat absorbed during the day, when the heat stored on the ground has been exhausted, and the heat cannot make ends meet, causing the ground temperature to gradually drop and the weather to become colder and colder.

In the 39th day, the accumulated heat is the least, the temperature is the lowest, the altitude angle of the sun is small, the degree of oblique radiation is large, and the heat stored in the atmosphere cannot make ends meet.

Why is it the coldest day in "March Nine"? This is explained by astronomical experts. As a method of timing the cold winter, the 81 days after the winter solstice are divided into 9 stages, and each stage is 9 days, which is called "winter ninety-nine", which is often said to be the number of nine cold days.

According to experts, from an astronomical point of view, the degree of warmth and coldness of a place is related to the angle of altitude of the Sun at noon. On this day of the winter solstice, the altitude angle of the sun is the lowest, only 26 degrees in the Beijing area. The solar altitude angle is small, the sunlight is oblique, and it passes through a relatively thick atmosphere to the ground, and a large part of the heat is absorbed by the atmosphere.

On this day, the Northern Hemisphere received the least amount of sunshine, 50 less than the Southern Hemisphere, and Beijing had only nine hours of daylight. However, this day is the first day of the number nine, and it is not the coldest time. This is because there is an atmosphere and water on the earth's surface, which can store heat, and it is not "stored and lost", but "accumulated heat".

After the winter solstice, although the solar altitude angle gradually increases, the amount of heat lost each day is still greater than the heat received. In the "39 days" after the winter solstice, the accumulated heat is the least, the temperature is the lowest, and the weather is getting colder and colder. At this time, if there is the influence of cold air, the weather is even colder.

Therefore, the weather in "Sanjiu" is the coldest.

Sanjiu days is the coldest time of the year.

The so-called "hot in the dogs, cold in the three nines", when the coldest time of the year is"Thirty-nine days"By the time of the "Forty-Nine Days". Counting nine cold days, that is, from the winter solstice every day (Ganzhi day), every nine days is counted as a "nine", until the "ninety-nine" eighty-one days, "nine peach blossoms", at this time the cold is exhausted, the weather is warm. There is also a saying that "ninety-nine and nineteen, ploughing cattle go everywhere", and after "ninety-nine", "spring is warm in the middle of spring", and the spring ploughing season has arrived.

In a year, the day of the winter solstice is the shortest, the angle between the sun's rays and the ground is the smallest, and the ground gets the least solar heat. Why is that?

Meteorological experts say that the temperature on the ground is not only affected by the intensity of the sun's rays, but also related to the heat dissipation on the ground. Because after the summer solstice, the infiltration bend the long day and the night is short, the angle between the sun's rays and the ground is larger, the ground obtains the most heat, and the heat dissipation at night is less, so that the heat storage of the ground gradually increases, to the winter solstice, although the sun irradiation time is shorter, the angle between the sun's rays and the ground is the smallest, but the ground can also replenish the heat of the storage bush in summer and autumn, so the weather is not necessarily very cold.

In the "39", because the ground receives less heat from the sun, the heat dissipation at night exceeds the heat absorbed by the daytime, and the heat stored on the ground has been exhausted, and the ground temperature gradually drops due to the heat that cannot make ends meet, and the weather is getting colder and colder. At this time, if there is the influence of cold air, the weather becomes very cold. Therefore, the weather in "Sanjiu" is the coldest.

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 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.

Meanwhile, in the Southern Hemisphere, it's summer.

Sanjiu days is the coldest time of the year.

The so-called "hot in the dogs, cold in the three nines", when the coldest time of the year is"Thirty-nine days"By the time of the "Forty-Nine Days". Counting nine cold days, that is, from the winter solstice every day (Ganzhi day), every nine days is counted as a "nine", until the "ninety-nine" eighty-one days, "nine peach blossoms", at this time the cold is exhausted, the weather is warm. There is also a saying that "ninety-nine and nineteen, ploughing cattle go everywhere", and after "ninety-nine", "spring is warm in the middle of spring", and the spring ploughing season has arrived.

Thirty-nine days are the coldest time.

Sanjiu Day refers to the third cold day from the winter solstice, which is the coldest period of the year. The specific calculation method is to take the winter solstice as the starting point, and count one "nine" every "nine days", and the first nine days are called"Nineteen", the second nine days called"Twenty-nine", and so on, the coldest time of the year is around"Three.

Nine, forty-nine days"。

Count until the eighty-first day of "ninety-nine", "nine peach blossoms", at this time the cold has ended, and the weather will be warm. The winter solstice festival time is on December 21 and 23 of the Gregorian calendar every year, and the winter solstice is counted to "ninety-nine" eighty-one days from the beginning of the day, that is, in the late March of the Gregorian calendar (around the spring equinox), "nine peach blossoms" and "warm spring in the depths of the day".

Due to the vast territory of China, the climate of various places is very different, not all parts of the country are like this, and the number nine "nine nine eighty-one days, nine peach blossoms, spring and warm days" correspond to only some parts of our country.

Folk proverbs: "Tong Hall summer solstice three Geng into ambush, winter solstice every nine." "The method of counting nine has been passed down by word of mouth in our country since ancient times, there is a history, there is no record, as for when the origin is, there is no exact information. Why count "nine"? Why not count.

What about two, three, four, five, six, seven, eight? This is the growth and decline of yin and yang in traditional Chinese philosophy, and the growth of yang and yin symbolizes warmth and cold.

Nine, for the number of "to the yang", also known as the old yang, nine is the greatest number, the accumulation of "the number of the yang" means that the yin is decreasing day by day, tired to nine times has come to the end, means that the cold is warm, "spring has been deep".

Description of the phenomenon:

The so-called "hot in the dogs, cold in the three nines", when the coldest time of the year is"Thirty-nine days"By the time of the "Forty-Nine Days". Counting nine cold days, that is, from the winter solstice every day (Ganzhi day), every nine days is counted as a "nine", until the "ninety-nine" eighty-one days, "nine peach blossoms", at this time the cold is exhausted, the weather is warm.

There is also a saying that "ninety-nine and nineteen, ploughing cattle go everywhere", and after "ninety-nine", "spring is warm in the middle of spring", and the spring ploughing season has arrived. Due to the vast size of our country, the climate varies greatly from place to place, and this is not the case in all parts of the country. The winter solstice festival time is on December 21 and 23 of the Gregorian calendar every year, and the "ninety-nine" eighty-one days are pushed from the starting point of the winter solstice and every day.

That is, in the late March of the Gregorian calendar (around the spring equinox), "nine peach blossoms", "deep spring and warm days", which corresponds to only some parts of southern China, and many places in China are still cold before and after the spring equinox.