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Recently. Taklamakan Desert.
Widespread snowfall occurred.
The sea of sand turned into a "sea of snow".
Yes, you read that right.
Taklamakan Desert.
It was covered with a thick layer of white snow.
Snow in the desert**From Xinjiang Meteorological Weibo
Why does it snow in the desert?
Taklamakan Desert.
It is located in the southern part of China.
The heart of the Tarim Basin.
It is the largest desert in China.
It is also the second largest mobile desert in the world.
Its average annual precipitation does not exceed 100 mm.
The average annual evaporation is as high.
2500 mm to 3400 mm.
Why does it snow in such a water-scarce place?
In the moisture is abundant.
Under conditions where the temperature is low enough.
Water vapor in the atmosphere condenses directly.
Or the water droplets solidify directly.
It's snow. Snowfall in the Taklamakan Desert.
With cold air, water vapor.
There is an inseparable relationship.
Every winter. Cold air from the north and west roads.
It will cross the Tien Shan Mountains and enter the Tarim Basin.
Make the average temperature in the Taklamakan Desert.
Reach minus four degrees Celsius.
Meanwhile. of the periphery of the Tarim Basin.
Larger rivers such as the Tarim River and the Yarkand River.
For the snowfall around the desert.
Corresponding water vapor** is provided.
From 20:00 on December 11 to 20:00 on December 15, the snowfall in Xinjiang.
December 11-15.
Most of Xinjiang experienced a blizzard weather.
It is in this process.
Luntai County, Bazhou, and Mo County.
and around Shaya County, Aksu Prefecture.
The Taklamakan Desert is experiencing snowfall.
Is snow rare in the desert?
Snow is falling in the desert.
Although rare, it is not uncommon.
The year 2023 is the Taklamakan Desert.
For the third consecutive winter, snowfall falls.
The white sand dunes are set against the poplar forests on both sides of the Tarim River**From Tianshan Net
Take the hinterland of the Taklamakan Desert.
The monitoring data of the weather station in the tower is an example.
Since the establishment of the station in 1998.
Monitored. Winter occurrence is greater than 01 mm of snowfall days.
More than 40 times.
The Sahara Desert located in Africa is.
The largest tropical desert in the world.
The total area is more than 9 million square kilometers.
It is controlled by the subtropical high pressure zone all year round.
Precipitation is scarce. But on January 19, 2018.
Located in the northern part of the Sahara Desert in Africa.
The Algerian town of Ain Sephra.
There was a heavy snowfall.
Snow falls in the Sahara Desert.
Although it is located in a tropical desert.
But here in winter in January.
The average minimum temperature is as low as 35 degrees Celsius.
Plus northerly and westerly winds.
It brought with it the moisture of the Atlantic.
This provided the conditions for this snowfall in the Sahara.
Can snow alleviate desert drought?
It's snowing in the desert.
It is not a drought situation.
Can it be relieved?
In fact, there is no necessary relationship between the two.
With global warming.
Extreme weather and climate events tend to occur more frequently.
Local precipitation in the southern Xinjiang Basin.
Extremity and frequency have increased significantly.
At the same time, winter throughout southern Xinjiang in recent years.
Average precipitation is also on the rise.
Schematic diagram of the water cycle.
Global temperatures are rising, and glaciers are melting at an accelerated rate.
Desert temperatures are also getting warmer.
Evaporation also increases.
As a result, the water cycle is accelerated.
Even if it's raining downpour.
Stagnant water is also quickly evaporated.
Precipitation is much less than evaporation.
The two cannot "break even".
So the amount of precipitation increases.
It does not change the arid state of the desert.
Even as the temperature continues to break through record highs.
Vegetation conditions are even more worrisome in arid areas.
After the snow melts.
The vegetation on the surface has not yet been reached.
The role of fixing and storing water sources.
The water has already been evaporated.
In addition, a large amount of precipitation that occurs suddenly.
Not only can it not improve the local ecological environment.
Instead, it may cause a desert depression.
This makes it difficult for vegetation in the desert to survive.
Desert snowfall reminds us.
There is an urgent need to tackle global warming.
China Water Affairs Comprehensive Xinjiang**, China Meteorological Administration's WeChat***People**, Guangming.com, etc. Some *** on the Internet, if there is any infringement, please contact to delete.
Copywriting|Meng Jing Luo Jingyue.
Audit|Chen RuiExecutive Producer|Fan YiziEditor-in-charge|Luo JingyueProofreading|Prince Month.