Is the formation process of tornado from the sky to the ground or from the ground to the sky?

In recent years, movies about tornadoes have been put on the screen. In order to study tornadoes or take photos of tornadoes, the wind chasers in movies risk their lives to chase tornadoes. The whole process is wonderful, and the tornado, a very destructive work of Mother Nature, is also spectacular and shocking.

Besides, there is indeed a wave abroad recently? The chasing wind? . A large number of photographers came to the so-called? Tornado lane? The central plains of the United States put themselves in danger just to capture those shocking scenes. There are even experienced wind chasers who set up travel companies to lead tourists to watch tornadoes at close range.

With the increasing popularity of tornadoes, a question has also been raised:

Did tornadoes form from the sky to the ground or from the ground to the sky?

20 18 12 14, Jenna, a meteorologist from Ohio university? Janahuser and her team presented their research results at the meeting of American Geophysical Union:

Tornadoes form from the ground.

Meteorologists have always believed that tornadoes originated from clouds, and then gradually formed a powerful funnel-shaped vortex airflow, reaching the ground. Jenna. Hauser has been out in the field many times? Chasing the wind? The survey pointed this out? Top down? The formation mode of is wrong.

Jenna. Hauser and her team studied four tornadoes in a few years. These tornadoes form very quickly. In a few minutes, they can gather strength at an alarming rate, appear in unpredictable places, and then start to wreak havoc everywhere. Therefore, it is not easy to capture the formation process of tornadoes. With the help of fast scanning mobile Doppler radar and excellent luck, they managed to collect the comprehensive data of four tornadoes. According to these data, none of the four tornadoes fell from the sky.

In addition, swarms of storm chasers also gave them great help. These crazy photographers gave it to Jenna? Hauser's team provided many photos. Jenna. Hauser's team compared the wind speed measured by radar with hundreds of photos of related tornadoes, and the results showed that these storm chasers had photographed the funnel-shaped vortex on the ground before the radar showed that the cyclone was at high altitude. This further confirms the conclusion that the formation of tornadoes began on the ground.

Of course, there are more than 65,438+0,000 tornadoes recorded in the United States every year. The scale of these four samples is quite small, which fails to provide enough data to prove that tornadoes are formed on the ground in most cases. Just Jenna? The meager strength of Hauser's team is far from enough, and the emergence of truth requires the efforts of meteorological researchers with more adventurous spirit.

However, this kind of research is valuable. Considering that these storms threaten the safety of people's lives and property every year, if we can understand the formation process of tornadoes and give an early warning when they first form, we can add more precious time to people's preparations.