Why Ledo in the summer? Why are there so many thunderstorms in the summer?

Thunder and lightning are formed by strong convective weather, which is rare in winter and only in summer. So in the summer there are many and in the winter there are almost none.

Thunder and lightning are the phenomenon of electrical discharge in thunderstorm clouds. There are certain conditions for the formation of thunderstorm clouds, that is, there must be sufficient water vapor in the air, there must be a power to make the moist air rise, and the air must be able to produce violent convective movements. In spring and summer, due to the influence of the warm and humid airflow from the south, the air is humid, and at the same time, the solar radiation is strong, the air near the ground is constantly heated and rises, and the cold air in the upper layer sinks, which is easy to form strong convection, so there are many thunderstorms and even hail.

When the air is extremely unstable, it is easy to have a strong upward convective movement, and form a towering cumulonimbus cloud, the cloud is full of water vapor rushing up and down, it will produce static electricity, the upper end of the cloud will produce a positive charge, the lower end of the cloud will produce a negative charge, and the ground is a positive charge, then, there is air as an insulator between the positive and negative charges, if the voltage difference between the positive and negative charges is large enough to break through the air of the insulator, so that the air expands in an instant**, heats up and glows, and the light is lightning, expanding** Making a loud noise is thunder.

Because of the extremely hot weather in summer, there is a strong convection of the air in some places, causing a large amount of hot and humid air to rise violently, causing cumulonimbus clouds. Since the intense thermal convection that produces cumulonimbus clouds is only prone to occur in summer, thunder is also often seen in summer.

Thunder storm. This is because the weather is very hot in summer, and the air has strong convection in local places, causing a lot of dampness and heat.

The air rises violently, causing cumulonimbus clouds.

formed. In summer, there is a lot of water vapor in the air, and when the temperature rises under strong sunlight, the water vapor is pushed high into the air by the strong rising air, forming large cumulonimbus clouds.

Cumulonimbus clouds contain a lot of water, including small droplets and ice crystals in addition to water vapor. They grow in size as the cloud grows, and when the updrafts are unable to hold them, they fall to the ground, forming thundershowers. Lightning occurs due to the strong thermal convection that produces cumulonimbus clouds, which cause severe disturbances in cumulonimbus clouds.

And because the cumulonimbus clouds move one after the other, the amount of rainfall varies greatly, and thundershowers are formed. In summer, after noon, the air temperature is highest on the continent, and the upward movement is strongest at this time. Therefore, thundershowers mostly occur in the period from late afternoon to early evening.

We know that when it rains, there must be clouds. Clouds are formed by the condensation of water vapor from warm, moist air close to the ground when it rises and cools. When the small water droplets or ice crystals in the clouds gradually become larger, the air cannot support it, and it rains when it falls.

It can be seen that there must be two conditions for rain: first, there must be humid warm air; The second is that the air should have a strong upward movement. In summer, the southeast wind blowing from the sea often blows in our country, and the sea is wet.

The air is constantly coming to the land. At the same time, summer, when the sun hits the ground, is hotter than any other season, and the air close to the ground is also the hottest, and it is easy to have a strong upward movement. As a result, there are more times when it rains in the summer.

As far as I know, summer thunderstorms are also common because strong thermal convection only produces cumulonimbus clouds in the summer.

Thunderstorms are particularly frequent due to the influence of air currents in summer.

Causes: The formation of thunderstorms must meet certain conditions, that is, there must be sufficient water vapor in the air, there must be the power to make the moist air rise, and the air must be able to produce violent convective movements. In spring and summer, due to the influence of the warm and humid airflow from the south, the air is humid, and at the same time, the solar radiation is strong, the air near the ground is constantly heated and rises, and the cold air in the upper layer sinks, which is easy to form strong convection, so there are many thunderstorms and even hail.

In winter, due to the control of the continental cold air mass, the air is cold and dry, and the solar radiation is weak, the air is not easy to form violent convection, so thundershowers rarely occur.

1. In summer, because the evaporation rate of water vapor from the sun directly hitting the ground is higher than that of other seasons, the air temperature close to the ground is relatively high, so there will be more water vapor, and the smaller the air density, the air will become lighter, and the lighter air will keep rising, with the increase of altitude, the temperature will gradually decrease, and the air will gradually become cooler and unable to accommodate abundant water vapor, and a part of the water vapor will form small water droplets, and clouds will appear in the sky.

2. Because the water droplets are too small, the hot air flow of the riser tube also drags them and pushes the suspended water droplets higher, and the clouds will accumulate more and more. When the small water droplets in the cumulonimbus cloud collide to form larger water droplets and begin to fall, the hot air rises from the ground and rushes into a strong net, and the friction between the two brings an electric charge, and the updraft carries a positive charge and the falling water droplets have a negative charge.

3. Over time, a large number of positive charges have been developed at the top of the Cumulonimbus cloud and a large number of negative charges at the bottom. When the water droplets in the cloud become larger and larger, the updraft heat cannot hold up, and when it falls from the cloud, the heat in the lower layer will become cold when it is rained, and it will fall directly from the ground, at which time the charge begins to discharge, accompanied by a rumbling thunder.

Because lightning is faster than thunder, people see lightning before they hear thunder, and sometimes thunder is caused by clouds and mountain peaks reflecting thunder on the ground.

Thunderstorms are the result of strong atmospheric transport. Rain requires a lot of water vapor, thunder, and a lot of electrical charge, which requires strong atmospheric movement. And the energy of the atmospheric movement is the sun.

In summer, when the sun is strong, the plants on the surface of the water on the ground produce a large amount of water vapor, and the atmosphere close to the ground receives energy under the action of sunlight to form an updraft. A large amount of water vapor is sent into the upper atmosphere, and the relative movement of the air flow (hot and cold air) generates a large amount of electric charge, which provides the conditions for the formation of thunderstorms.

Summer is coming, thunderstorms are gradually increasing, and daily lightning prevention should pay attention to these aspects.