What kind of climate phenomenon is closely related to the winter solstice?

The winter solstice is closely related to the extreme day phenomenon.

First, the relationship between winter solstice and extreme day phenomenon

The winter solstice is an important solar term in the northern hemisphere. On this day, the sun shines directly on the Tropic of Capricorn, resulting in the shortest days and the longest nights in all parts of the northern hemisphere. On the contrary, the southern hemisphere is just the opposite, with the longest day and the shortest night.

This astronomical phenomenon caused by the earth's rotation and revolution has an important influence on the earth's climate. Especially in the Arctic, there will be extreme daytime from winter solstice, that is, 24 hours a day is daytime, and there is no night.

This phenomenon is due to the continuous sunshine near the Arctic Circle around the winter solstice, which leads to the continuous daytime in polar regions.

Second, the relationship between winter solstice and other climate phenomena

Extreme day phenomenon is a unique climate phenomenon in polar regions, which usually occurs around the vernal equinox and autumnal equinox, and is most obvious in winter solstice and summer solstice. In the Arctic, the extreme day phenomenon can last for several weeks, but in the Antarctic, on the contrary, there will be the extreme night phenomenon, that is, the dark night that lasts for several weeks.

This special climate phenomenon is due to the existence of a certain inclination between the earth's rotation axis and its rotation axis, which leads to different time and intensity of sunlight exposure in different regions during the earth's revolution. ?

The definition and characteristics of winter solstice, and the relationship between winter solstice and cold climate.

I. Definition and characteristics of winter solstice

Winter solstice, also known as "Winter Festival" and "Dragon Solstice Festival", is the 22nd solar term among the 24 solar terms, usually between June 65438+February 2 1-23 in the Gregorian calendar every year. From winter to the sun, the direct point of the sun is located on the tropic of Capricorn, with the shortest day time and the longest night time in the northern hemisphere.

Second, the relationship between winter solstice and cold climate

1, temperature drop: after the winter solstice, the temperature in the northern hemisphere gradually drops, and cold weather begins to dominate. This is because the direct point of the sun moves south, and the solar radiation received by the northern hemisphere decreases, resulting in a drop in temperature.

2. Winter wind: During the winter solstice, the high-pressure system in the Asian continent was strengthened, which led to the frequent southward movement of cold air and the formation of winter wind. This wind brought cold and dry weather, which aggravated the cold climate in the northern hemisphere. ?