Snowflakes are flying all over the sky, and Beijing welcomes the first snow of 202 1. Where has it never snowed?

Cold air frequently invades our country. On June 9, 202 1, 1, the capital Beijing also ushered in the first snowfall of this year. Snowflakes are flying all over the sky, which is really beautiful and romantic.

Snowfall conditions include flowers in spring, moon in autumn, cool breeze in summer and snow in winter.

The alternation of spring, summer, autumn and winter is constant, but not every place has obvious changes in seasonal alternation temperature, and not every place will snow in winter. To snow, you need to meet the following conditions:

1, the temperature should be low enough, below freezing point; 2. The atmosphere needs to contain ice crystal nuclei. Ice crystal nuclei, also known as condensation nuclei, are some solid particles suspended in the air and are necessary conditions for snowfall; 3, sufficient water vapor, only water vapor can condense into snow.

If the cold air is quite strong and carries moisture, it can snow at the temperature of 1 degree Celsius to1degree Celsius.

Where it snows, the earth is divided by latitude and longitude. The latitude of the equator is 0 degrees, and then it extends to the north and south poles, and the latitude gradually increases. The latitude of the north and south poles is 90 degrees. General snowfall will only occur in the middle and high latitudes. However, with the increase of altitude, the temperature will drop. In low latitudes, some mountainous areas or plateaus are more than 2000 meters above sea level, and there are also opportunities for snowfall.

It's hard to say where it hasn't snowed before, so let's start with records.

1, where does it not snow in China?

Children in the south are particularly excited to see the snow in the north, because it seldom snows or even doesn't. 20 16 has the first show in South China, such as the Pearl River Delta? Snow? . In fact, this so-called? Snow? What should be the official name? Hey?

Polonium does not belong to snow, but it is also a kind of atmospheric solid precipitation.

But what about this? Snow? It has also made children in the Pearl River Delta region happy for a long time. Do you bask in this in your circle of friends? Snow? .

In addition, there are some places where there is no snowfall, such as the southern coastal areas of Guangdong, Hainan Province and the South China Sea Islands.

Because ocean airflow can also indirectly affect the probability of snow in this area, if there are more warm currents in high latitudes, the probability of snow in this area will be reduced.

Therefore, although some coastal areas in Fujian have higher latitudes, there are also areas that have never snowed.

2. Where it doesn't snow in the world

Low-latitude countries near the equator will have no chance to see snowfall at low altitudes, such as Thailand, Malaysia, India, Singapore and Brunei, which are located in tropical areas. But many things cannot be generalized. It's really hard to say where it hasn't snowed. After all, even the Sahara desert, which is recognized as the hottest, has been covered with snow.