When it comes to spring, people will think of the warm sunshine, the buds that break the ground, the gentle wind, and spring always contains infinite vitality and gentleness. Many people take advantage of the recent spring color to go out to the green, but as soon as they go out, they are blown by the wind to doubt their lives.
The strong winds that swept in from all directions could easily blow off children's hats, blow out the carefully groomed hairstyles before going out, roll up dust and fine sand to blow the windbreakers to the wind, and blow people to the ground.
Tap to blow a gust of wind to the willow tree
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It only takes a burst of spring wind to go from graceful in the wind to messy in the wind
What about the good "spring breeze blowing face spirit" and "spring wind kissing my face"? I saw that this spring breeze was obviously trying to smoke me.
Yes, the spring breeze is fierce and big
"Blowing noodles is not cold willow wind", Mr. Zhu Ziqing described the spring wind in his essay "Spring" as "like a mother's hand touching you". But from the data, Spring is more like an angry mother.
Anhui folk houses surrounded by spring colors
Some scholars have made statistics based on the surface wind speed data of 413 stations in China, and the data show that during the period from 1971 to 2019, China's surface wind speed in spring was the largest, with an average of 2.81m/s, and the smallest in autumn was only 2.24m/s. Among them, the average wind speed in April is the largest throughout the year, so there is a scientific basis for what you think the spring breeze is "annoying".
In Beijing Beihai Park, the budding willow branches are blown up by the wind, and the spring mood is getting stronger
Wind speed is an important basis for the classification of wind power, and the faster the wind speed, the greater the wind. In meteorology, the wind with instantaneous wind strength of 8 or more is called a gale, which is equivalent to a wind speed of more than 17m/s. What is the concept of a Class 8 wind? Pedestrians are inconvenient to walk, wind blows tree branches broken, and safety accidents are very easy to occur in outdoor activities.
Wind force rating and common somatosensory phenomena cross-reference table
Source: China Meteorological Network
Spring winds are actually a common phenomenon throughout the country. If China is divided into seven regions: Northeast China, North China, Northwest China, Plateau, Middle and Lower Reaches of the Yangtze River, Southwest China, and South China, only South China has a small seasonal difference in wind speed throughout the year, except for South China, the average spring wind speed in the rest of China is significantly higher than the other three seasons, especially in eastern Yunnan, western Sichuan, southern China and northeast China.
China Weather Network has shown big data in the past 60 years,
The highest probability of high winds in the mainland from March to May every year,
Among them, the three northeastern provinces are the most obvious
Image source: China Weather Network
Mr. Lao She, who lives in Jinan and Qingdao, once complained about the uncomfortable spring breeze in the article, calling the spring breeze in these two northern cities too "rough":
"The spring in both places has been blown by the wind. The so-called spring breeze seems to be gentle, kissing the willow branch gently. Slightly blowing the surface of the water, secretly transmitting the fragrance of flowers, sympathetically gently lifting the feathers of the birds..."
"The wind in Jinan always blows the sky yellow when the lilac begonias bloom, and nothing can be seen, even the flowers are buried in the yellow darkness, and the wind in Qingdao is less sandy, but it is cunning, and suddenly a cold wind or a day comes in the warm season, sending everything back to winter."
Qingdao in early April is a good time to enjoy cherry blossoms.
At this time, I was most afraid of a fierce wind and rain
I believe that the small friends who live in the northern region have a deep understanding of Mr. Lao She's feelings: "Spring seems to have vitality, flowers and plants, such a wild wind is almost unforgivable!" ”
Spring wind, spring wind, you so bitter! So why do windy days always prefer to appear in the spring?
The wind in the south is much gentler than in the north
The weather in spring has always been changeable. From a meteorological point of view, the mainland belongs to the monsoon climate zone, and in the four seasons of the year, the spring between winter and summer is the most volatile season of meteorological change. Winter and summer wind alternately, cold air and warm and humid air flow one after another, often the noon sun is warm, morning and evening but the cold attacks people, a moment "spring wind to send warmth" and a moment and "spring cold material steep".
Xinjiang Altai region, pleasant spring color
From the perspective of the cause of the wind, the air flows from the high pressure area to the low pressure area to form the wind, and the larger the pressure gradient, the faster the wind speed.
The continental winter is mainly affected by siberian cold high pressure, mostly northerly winds; in summer, it is mainly affected by the subtropical warm high pressure of the Pacific Ocean, with more southerly winds. Spring is the transition period of the prevailing wind from winter wind to summer wind, the cold air in the north and the warm and humid air flow in the south meet to form a front, the two do not give in to each other, extremely unstable, easy to form a low-pressure cyclone, and then produce windy weather.
Map of the monsoons affected by the winter and summer seasons in China
Source: China National Geographic Supplement, Issue 01, 2018
Especially in the north of the continent, one of the characteristics of spring is that the north-south winds alternate, and the wind is strong, and a gust of wind can blow messy in the human wind.
In the northwest region of the desert Gobi, the spring is sunny and dry, the air pressure is low, and after encountering the cold northerly winds from Siberia and the Mongolian plateau, the huge pressure gradient is very easy to lead to strong winds, which is extremely powerful, which can be called the most violent spring wind in China.
Blowing sand and gravel often causes traffic accidents and even blows railway trains down. A similar incident occurred in Xinjiang on February 28, 2007, when an instantaneous wind blew 11 cars in motion to the ground, killing and injuring many people.
The devil's city in Karamay, Xinjiang, is also known as the "Wind City",
The unique Yadan landform is made up of wind erosion
Most of the gentle spring breezes in people's minds are concentrated in the south. In the nearly 60 years of wind data calculated by China Weather Network, the number of windy days in Chengdu, Chongqing, Nanning, Guangzhou and other places between March and May is less than one day. Among them, the average number of windy days in Chengdu in spring is only 0.4 days, and the average wind force is only 1.2 m/s, which is the lowest value among provincial capital cities in China. In these cities, you can experience the gentleness of the spring breeze kissing your cheeks.
In the high mountains of Nanxi Secret Land in Zhejiang Province, spring flowers bloom in the fields and gliding in the spring breeze
The spring wind and monsoon in the mainland are closely related, so the wind direction is also relatively regular, and the most common in spring is the northerly and southerly winds.
In the spring, the solar radiation on the ground gradually strengthens, and the warm air formed by heating and the cold air in the south of the winter wind convection up and down, forming a strong north wind; in the east China region, the earth warms up faster than the sea surface, and the summer wind begins to form, which is more likely to produce a short southeast wind.
In the spring of Yangzhou Slender West Lake, the breeze blows willow branches,
It is a true portrayal of "blowing noodles and not chilling willow wind"
Therefore, for most parts of the country, spring is the season with the most winds of the year, which can be called the "wind season" of the whole year.
However, the difference in body feeling between different cities is still very large, if you want to compare the spring wind to a "sharpening knife", then some are carved knives that can be appreciated and played, and some are a frightening green dragon crescent knife.
The winds are annoying, and the winds are also trillion years
Although the wind is formless and intangible, it also has a strong sense of existence. It can not only shape the majestic geographical landscape, but also have an impact on people's lives.
Flowers and willows, the color of spring
In addition to natural disasters such as winds above level 8, which can easily cause safety accidents and cause droughts in farmland, spring winds are also prone to cause people's physical discomfort.
According to medical meteorology, wind speeds of more than 6 meters per second can be upsetting, disrupting people's thinking and normal work. How windy it is in spring, it is very easy to produce low-frequency winds (that is, infrasound waves), which are easy to affect the central nervous system of the human body. As a result, windy springs can easily be frustrating, and the traffic accident rate in April is higher than in the previous months.
Every Year in April, Shandong Weifang holds the Weifang International Kite Festival.
Everyone here to fly their kite works,
Transform the annoying spring breeze into the fun of spring
Even if the breeze is blowing, pollen, dust and pollutants can irritate the respiratory tract and eyes of sensitive people, and dry pain and emotional disorders may occur.
Therefore, in the small mood of spring, the "initiator" of spring wind has an unshirkable responsibility. If someone asks you "how are you in a bad mood" recently, you can look out the window and sigh: "Because of the spring breeze ~"
The peach blossoms and snowy mountains of Nyingchi, Tibet, are a beautiful scenery that cannot be missed in spring
Although the spring breeze is uncomfortable, it brings good news to the farmland. The warm and humid air brought by the spring wind thawed the rivers and rivers, and the water vapor condensed at high altitude to form a spring rain. In Chinese mythology, the god of wind and rain are not separated, and wind and rain are closely related to agriculture, carrying people's expectations for a good harvest. As long as it is not a strong wind, the great spring wind is often a good sign of a good harvest of grain.
"The wind swings the wheat waves, a sign of a good harvest." The swaying of wheat by spring wind increases ventilation and illumination, improves the microclimate environment, and reduces the probability of spring jaundice in wheat plants; the flickering light formed by swaying can also make photosynthesis more effective, which is conducive to increasing yield.
The ears of wheat swaying in the wind are a good sign of a good harvest
However, whether your region is "spring breeze" or "spring wind like a knife", from the perspective of long-term change trends, the national average annual wind speed shows a significant weakening trend, of which the spring average wind speed decline trend is the most significant.
So theoretically, as long as you live long enough, the spring breeze you encounter in the future may become more and more gentle.
【Reference】
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