Meteorologists say that this year's strong convective weather is abnormal. What is the cause of abnormal airflow?

Meteorologists said that this year's strong convective weather was abnormal. Zhang Tao, chief forecaster of the Meteorological Observatory, said that the occurrence of this round of severe convective weather in South China was mainly due to the enhancement of warm and humid airflow in the southwest, which brought rich water vapor and heat, forming unstable conditions of cold upper and warm lower, which was beneficial to the occurrence of severe convective weather. The cold air moves south and the trough moves east, which is easy to cause strong convective weather.

He said that this year's strong convective weather is quite abnormal, and the February-March period, including the first half of April, is obviously less than normal, and the reason for this abnormal airflow may be related to the local climate. In addition, he also said that after entering mid-April, there were obviously more severe convective weather, and its extreme value was also significantly enhanced. With the advance of cold air, the rainfall center will gradually press south, and the rainfall center will move from northwest Guangxi to Zhejiang.

So, what is airflow?

Simply put, airflow is the up-and-down movement of air. The upward movement of air is called upward airflow, and the downward movement of air is called downward airflow. Upward airflow can be divided into power airflow, hot airflow and mountain wave. Paragliders generally use power updraft and thermal updraft to complete air stagnation, pan-up and long-distance cross-country flight.

Air flow release characteristics

If the horizontally moving airflow meets excitons, it will climb along the obstacle until it reaches the top of the obstacle, depending on the highest point of the mountain.

Therefore, the airspace above the highest point (mountain volume) of the mountain shape is often the release point of airflow. If we compare the mountain to an irregular ice cube, turn the ice cube upside down, where the water drops fall is the highest point of the ice cube, and then turn it back, which is the release point of the airflow. Therefore, it is necessary to carefully judge the mountain shape before taking off, find the excitation point of airflow according to the ups and downs of the mountain, and make a flight route. This method enables the pilot to find the connection point of airflow in the cross-country process, use it to climb the altitude, and then continue flying.

Well, that's all I want to share in this issue. What do you think of this matter?