Home Physical Why does the tropical sea produce whirlwinds?

Why does the tropical sea produce whirlwinds?

Every year, during the cyclone season (low pressure or cyclone), if you pay attention to the news, Radio you will discover: cyclones often produce in the Pacific Ocean. The location usually breeds in the tropics between 5 and 20 degrees north latitude, more than every year. It can be said that the tropical sea is the hometown of whirlwinds.

Cyclones are tropical cyclones. But tropical cyclones are cyclones and strong winds, tropical storm winds, and tropical depressions. Wind strength from level 12 (wind speed 118 – 132 km / h) or more is called a very heavy storm, winds from 10 to 11 are called storm winds, winds of 8-9 are called storm winds tropical, winds below level 8 are called tropical depressions.

There are two main conditions for cyclones’ production: one is a relatively high temperature, and the other is abundant steam.

When the water is boiled, the water rises from the bottom of the kettle because water at the bottom of the kettle expands after the heat. The same is true for the air; the air below, after being subjected to heat, rises above. The high-temperature area encounters turbulence; a large amount of air begins to rise high, causing the air pressure near the ground to drop. At that time, the outer air layer will continuously pour into the rising air stream because the Earth’s movement causes the air flowing into it to swirl like a wheel, which is the cause of the cyclone. When the airflow expands and expands, it turns cold, the water vapor in it gets cold, condenses into water droplets, and at the same time releases heat. That made the lower air constantly rise, the lower the air pressure, the stronger the swirling air, which is why the tornado is getting stronger.

Which place fully meets the two above conditions? Only available in tropical seas. The air temperature on the sea surface is so high that the lower air can absorb the water vapor on the sea surface, which is the most abundant water vapor on Earth. It is these vapors that are the main driving force behind the formation of a whirlwind. Without this source of momentum, even the formed whirlwind would dissolve.

The second is that there near the equator, the effect of the Earth’s rotation’s centrifugal force is strong, conducive to the whirlwind’s rotation, and increases the complex power.

The third is that the tropical sea level relative to the sea level at the average latitude is purer. Hence, the air on the same sea area always maintains stable and long-term conditions, giving cyclones enough time. To accumulate energy, the whirlwind is smoked. With the combination of these conditions, only suitable catalytic opportunities are required; for example, diffuse radiant air emerges above, or winds in the southern and northern hemispheres meet in the north. In any way, whirlwind winds will form in a certain tropical sea area and increase gradually. According to statistics, on the tropical sea, cyclones often produce in areas where the temperature is higher than 26 – 27 ° C.

The statistical results show that: the region that produces cyclones mainly exists in the East Sea of ​​the Philippines, the East Sea, the western islands of India, and the east coast of Australia. In these seas, the seawater temperature is quite high, which is also meeting the North and South hemispheres’ winds. Therefore, each year these regions often produce more than 20 times the cyclone.



James Smith
I used to look up at the sky when I was a child and wonder what's in those stars. Growing up, when I had the opportunity to contact the source of human knowledge, I had more knowledge about the universe, the natural world, and created laws. Being the founder of Wikiwap is where I can share my understanding of the world around me in a simple way that readers can access knowledge like a child. You and I are parts of the world; life will always be beautiful.


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