Things to note when a typhoon comes

Things to note when a typhoon comes are as follows:

Be alert to the typhoon's movements, listen to and watch media reports or learn about the latest typhoon status through the weather consultation phone number, weather website, etc. When a typhoon comes, you should close doors and windows tightly to prevent rain, and move flower pots on window sills or balconies to prevent them from falling. After the weather station issues a typhoon warning, do not travel to areas where the typhoon passes or swim at the beach, let alone go out on a boat.

A cyclone goes through many stages and changes in intensity. It may intensify and weaken before reaching land, then return to the ocean and become stronger again. The formation of a typhoon requires a large area of ??still warm ocean, and the ocean surface temperature exceeds 26.5 degrees Celsius for a period of time, which allows warm air to form above the ocean surface.

Typhoons also require low-altitude winds. When the air over the ocean is heated, it expands, becomes lighter, and then rises upward. Other winds blow against the rising air and, as it is heated, rise as well. Generally, the rising air contains water that has evaporated from the ocean surface. As it rises, it cools and condenses to form a large number of clouds, which can reach a height of about ten kilometers.

Warm air enters and rises, attracted by air currents above, which carry water into the upper atmosphere, making clouds thicker. The latent heat energy in water vapor is released by condensation, providing more power for the cyclone, forming a self-sustaining thermal cycle. By releasing new energy, the clouds rise further, reaching heights of 12 to 15 kilometers.

The Coriolis effect caused by the rotation of the earth causes the updraft around the center of the typhoon to spiral. As the cyclone matures and the eye of the storm is formed, the rising air cools and then descends, forming a bright and calm wind. eye, and the cyclone burns furiously within it.

The eyewall is where the typhoon is most intense, like a rotating cylinder. Cyclones in the Southern Hemisphere rotate clockwise and in the Northern Hemisphere counterclockwise. The center of a tropical cyclone usually has the lowest pressure, about 950 millibars or less, while the average pressure at the Earth's surface is about 1,000 to 1,010 millibars.

Because the air pressure of typhoons is low, which results in strong winds. The greater the air pressure difference, the stronger the wind. After a cyclone is formed, it will be carried away by global wind circulation, and its source will gradually expand. The addition of warm currents will allow the cyclone to continue to absorb heat and moisture.

Typhoon (English: Typhoon) is a type of tropical cyclone. A tropical cyclone is a low-pressure vortex that occurs on the tropical or subtropical ocean. It is a powerful and deep "tropical weather system". China divides tropical cyclones in the northwest Pacific into six levels based on the maximum average wind power (wind speed) near the bottom center. Those with wind speeds of level 12 or above near the center are collectively called typhoons.

Typhoons often bring violent winds, heavy rains and storm surges, which not only bring disasters to mankind, but also bring benefits to mankind. Typhoons bring abundant freshwater resources to mankind, which is of great significance for improving freshwater supply and ecological environment.

In addition, typhoons also maintain a relative balance between heat and cold in various parts of the world; the equatorial region has a hot climate. If typhoons had not dissipated this heat, the tropics would be hotter, the frigid zones would be colder, and the temperate zones would disappear from the earth.