Question

Give geographical reasons: Tropical cyclones occur rarely in Brazil.

Answer 1

The tropical cyclones form over ocean basins in lower latitudes of all oceans except South Atlantic Ocean and South-East Pacific Ocean. Cyclones form because of the low air pressure above the ocean.
When the ocean water is warm, more than 26°C, water evaporates from the warm ocean and form clouds. If there is low air pressure where the clouds are formed, it pulls them in and they begin to rotate. It is the Earth’s rotation and spinning on its axis that causes the cyclone’s clouds to rotate.
Cyclones over the warm tropical oceans are capable of producing dangerous winds, torrential rains and flooding, all of which may result in tremendous property damage and loss of life in coastal populations. The tropical cyclones develop over the warm water of the Bay of Bengal and the Arabian Sea and thus they are a matter of concern for coastal regions of India time and often.

Answer 2

Rare Tropical Cyclone Forms Off Brazil. A rare South Atlantic subtropical cyclone can be seen swirling clockwise off the coast of southern Brazil. ... Tropical cyclones are infrequent in the South Atlantic due to strong upper-air wind sheer, cool ocean temperatures and the lack of disturbances to initiate a spin.