Notes

in addition to the circulation,air rises up in the central part of the whirl of the cyclone. this is upward movement of air gives rise to a cylindrical cloud wall. the central part of the whirl wind is called as the eye.it would have spread within a region of 30-60 km from the central of the whirl.this eye is a region with little wind and free of rain and clouds .in satellite photographs this appears as a black circle.
the cylindrically arranged cluster of clouds around the eye is known as the eye wall .in this region heavy rainy and fast blowing wind occurs due to the eye wall ,a few spiral bounds of clouds can be seen.in these regions too,heavy and speedy wind occur.
cyclone is the main mechanism that distribute the huge solar energy received by the region s close to the equator of the globe.cyclones originating time to time in Indian , pacific and Atlantic oceans provide the factors essential for the life of plants and animals on the earth . through in nature cyclones is a favorable phenomenon like this ,today more attention is focused on the disasters brought about by it