Southern and Eastern Asia have the strongest development of monsoon climate because of the vast size of that continent. Over many parts of the oceans, sailors have used the change-about of the monsoon winds in their going back and forth to India. They go from India to Africa during the winter and return in the summer. because the winds blow that way.
Low-Pressure Area A cyclone is a kind of storm, and a storm is simply air that is moving rapidly from one place to another. A storm starts when warm, moist air from the Equator moves north-wards into the Northern Hemisphere and meets a mass of cold, dry air moving southwards from the Arctic region.
These two kinds of air masses do not mix. The sharp boundary that is formed where they meet is called a “front”. As the air masses continue to move, the lighter, warm air climbs up over the cold air. As it is forced upwards, the warm, moist air is cooled. The moisture then condenses, forming clouds.
While all this is going on, the air pressure begins to fall at the centre of the storm. The winds begin to blow around the low-pressure area in an anti-clockwise direction. Thus, the warm, moist air moves north- wards around the eastern side of the storm, while the cold air moves southwards around the western side.
A low-pressure area is known as a ‘cyclone”. The mass of air in such an area could vary in diameter from 400 to 1,000 miles. A tornado is also a circular storm, and it is sometimes confused with a cyclone. But a tornado maybe only 30 to 1,600 meters in diameter.
How Bad Is A Cyclone?
Cyclones are among the most dangerous and most destructive natural disasters that can occur. They have been responsible for about 1.9 million deaths worldwide over the last two centuries, and it is estimated that 10,000 people are killed each year by these storms.