◎On the 28th, there were many extreme weather in Inner Mongolia - rain and snow began to occur in some parts of the central and eastern regions while the temperature dropped, and heavy rain and heavy snowfall appeared at the same time.
◎The 24-hour precipitation in the Taifusi Banner of the Xilin Gol League exceeded 50 mm, reaching the level of heavy rain.
◎As of 9 a.m. on the 28th, the snowfall in Xilin Gol League, Zhenglanqi, Duolun County and other places has exceeded 30 mm, and the amount of heavy snowfall has reached the magnitude of a heavy snowfall!
Snow outside the city at the end of April is not unusual
But the way to turn rain to sleet and then to snow
It's outrageous
The weather in Inner Mongolia in spring is really complicated
The saying that "spring is like the four seasons" is more realistic
Extreme weather
Linked to global warming
This cold air process is characterized by high intensity, wide range, long duration and variety, and is a cold vortex and cold air weather process that cannot be underestimated. It brings extreme weather changes to the central and eastern parts of Inner Mongolia, giving a sense of the complexity and diversity of spring weather.
In addition, the blizzard is also a manifestation of climate extremes, which reflect the excessive amplitude of the westerly wind belt and the unusual activity of cold vortices and cold air. Behind these phenomena may be closely related to global warming.
Regional map of maize frost occurrence in Inner Mongolia from April 28 to 30
On the one hand, global warming has led to the melting of ice and snow in the polar regions, which has increased the temperature in the polar regions, thereby weakening the temperature difference between the polar regions and the mid-latitudes, affecting the stability of the westerly wind belt, making it more prone to fluctuations and oscillations, thus cutting off the cold vortex.
On the other hand, global warming has led to an increase in water vapor, which increases the humidity of the air, which increases the potential for precipitation, making it easier for cold vortices and cold air to produce heavy precipitation and even heavy snowfall when they encounter warm and humid air currents.
It's not just Inner Mongolia that has experienced extreme weather
Recently, most of Guangdong has been shrouded in rain
More than 30% of the city and county rainfall
Breaking through the local historical extremes for April
Hail fell in some places in Guangxi and Nanning
Some hailstones are larger than 5 cm in diameter
Bigger than an egg
Multiple vehicle glass, simple house roofs, etc., appeared
The phenomenon of being smashed
Why is the weather so unusual?
Behind the Abnormal Weather
El Niño is still in the air
Except for the floods caused by ferocious water conditions
This summer's heat wave is likely to intensify
According to the observation and judgment of the National Climate Center, the current round of El Niño events, which gradually formed from May to October 2023, reached a peak in December 2023, and is now entering a period of decay, and will tend to end in April and May 2024. However, the continuous decay of El Niño does not mean the end of its effects.
Meteorologists point out that in general, El Niño events typically lead to a rise in the global average temperature in the following year, which may in turn increase the frequency and intensity of extreme weather events, such as heat waves, droughts and floods.
According to the historical climate data, the Yangtze River basin and the southern part of the Yangtze River region are prone to flooding in the summer of the year following the El Niño event. At the same time, the aftermath of El Niño combined with human activity is likely to see global temperatures continue to hit record highs this summer.
For some time to come,
Will there be storms, hailstorms, and other disasters?
This spring, the strong convective weather on the mainland was extremely active and the intensity was extraordinary.
01
On the one hand, the warm and humid airflow is abnormally strong, corresponding to the northerly strong subtropical high, and the southerly wind on the north side is stronger than usual, so that the humid and hot degree of the low-level atmosphere is comparable to the level after the outbreak of the summer monsoon in May~June, and the water vapor and energy of the low-level atmosphere in the south are very sufficient.
On the other hand, since late March, the upper-air trough has also been very active, with several upper-air troughs moving eastward from the Tibetan Plateau, drying and cooling the mid-convective atmosphere. The vertical structure of "warm and wet at the bottom and dry and cold at the top" has been formed many times, which is a typical structure of strong convection.
02
May Day travel
Safety is still important
Issued by the China Meteorological Administration
The "May Day" holiday is expected
April 29 ~ May 3
Most of the country is suitable for tourism
Northeast China, the middle and lower reaches of the Yangtze River,
Some periods in South China and other places need attention
Travel safety risks caused by stormy weather
It is expected that during the "May Day" holiday (April 29 ~ May 3), the cold air will be active, the north will be windy, the temperature in Northwest China, North China, Huanghuai, Northeast China and other places will fluctuate greatly, the temperature in most parts of the country will be close to the same period of the year, the northern part of Xinjiang and the eastern part of Northwest China will be lower by 2~3 °C, and the central part of Inner Mongolia and southern Sichuan, Yunnan, western Guangxi and other places will be higher by 2~3 °C;
Source: China Weather Network, CCTV 1, Inner Mongolia Weather, Pentium Media, etc