Why spring is best for kite flying?

"Children return early from school, busy flying paper kites in the east wind." March is the time of the year for kite flying. Traditional Chinese medicine believes that in spring, when the natural yang qi is born, and people want to enhance their yang qi, kite flying is a very good exercise. And in the view of modern meteorologists, the reasons for kite flying in spring can be more than just maintaining yang qi so simple. Then let the old calendar for you to introduce, why spring is the most suitable for kite flying.

Spring is the windiest season why spring is the most suitable for kite flying, some people say, that's not simple, the spring is warm, hold a winter can finally come out to let off steam. And meteorologists are going to tell you a scientific answer - spring is windy.

"Spring is the windiest season" is really not just talk, according to climate data, the spring (March-May) wind is indeed the largest of the year, the most obvious is the north. Especially in April, from Xinjiang, Inner Mongolia to North China, Northeast, the frequency of windy weather is high, the average number of windy days in about 4 days, localities can reach 6-8 days, mountainous areas in more than 10 days.

Beijing, for example, has the highest number of windy days in April and May, especially in April. Meanwhile, the number of gale days in spring is not only high, but the wind is also relatively high. In Inner Mongolia, for example, the wind is a bit stronger in March-May than at any other time of the year.

Spring is most windy at the time of the rainy seasonThen when is it most windy in spring? According to the windy data of each season, from the national average, the rainy season is the windiest time of the year, or the most prominent in the north. Northeast, North China, Huanghuai several provinces, such as Inner Mongolia, Liaoning, Shandong, Henan and other places, basically is the most windy at the time of the valley rain.

And in Beijing is slightly different, Qingming and Guyu wind are relatively large. But whether it's Qingming or Grain Rain, both are in the April-May season, and overall, the wind is not small at this time of year, which makes it the best time to fly a kite.

Winter wind is also big, why is not suitable for kite flying then, winter wind is also big, why is not suitable for kite flying? Meteorologists introduced that the wind in spring is mostly upward, and the wind in winter is mostly downward. After spring, the surface warms up quickly, but the high altitude still maintains a relatively cold state, so the combination of cold and warm is easy to produce convection, updrafts will easily send the kite to the air. But in winter, when cold air activity is frequent, the wind is mostly blowing downward, so the kite naturally can't go up.

Of course, there is another reason why people lack the enthusiasm to go out and fly kites in the cold winter.

When is the best time of day to fly a kite?

Spring winds are strong, but they don't blow all day long. Usually, the wind is stronger on sunny days than on cloudy days because the vertical turbulence exchanges are more pronounced on sunny days, and the strongest winds occur during the midday to afternoon hours, because of the downward transfer of momentum. So what is this "momentum transfer"?

Generally in the spring, the ground warms up quickly, taking the lead in the spring state, but the altitude still maintains the properties of the winter, so the wind at high altitude is relatively large, around noon convection is strong, high and low altitude winds will be exchanged, the high winds will be passed down to the ground, causing the ground to increase the wind.

This is just like a person originally ran not fast, but the left hand a Bolt, the right hand a Liu Xiang, hand in hand with him to run, naturally faster. And to the evening after, convective activity weakened, the wind will be significantly reduced, so there is a proverb - gale fear of sunset.

So the time of day around noon is the easiest time to fly a kite, but if you happen to be located in the bureau, the wind is too strong, then it is best not to fly a kite at this time, because then the kite may not come back.

Kites need smooth windsSimply for kite flying, the smoother the wind, the better, but so many times this condition is not met. Sometimes the wind speed or direction is not uniform between high and low altitude, and there is a significant change, which will cause the kite to fly poorly even if it can take off smoothly, or to tumble in the high altitude. This is called windshear. If, unfortunately, the wind shear occurs near the ground, then even if there is wind, the kite is not going to take off easily.

All in all, flying a kite is a very good recreational activity, people should try to choose a flat and open place when flying a kite, if you look at the wind is good but you just can't put it up, then don't be so hard, and fight again another day. Of course, when flying a kite, one should also pay attention to safety, control the kite line well, do not cut people, and also pay attention not to be hurt by the kite. If you are cut by the kite line, be sure to wrap the gauze and seek medical attention.

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