D.4. Types Of Rainfall
The following are the various types of rainfalls:
Convectional Rainfall |
The air getting heated becomes light and rises in convection currents. As the air rises, it expands and drops the temperature and subsequently, condensation takes place and cumulus clouds are formed. This type of rainfall generally takes place in the equatorial regions and internal parts of the continents, predominantly in the northern hemisphere. |
Orographic Rain |
When the saturated air mass comes across a mountain, it is forced to ascend and as it rises, it expands; the temperature falls, and the moisture is condensed. The chief characteristic of this sort of rain is that the windward slopes receive greater rainfall. The area situated on the leeward side, which gets less rainfall is known as the rain-shadow area. It is also known as the relief rain. |
Cyclonic Rain |
Cyclonic activity causes cyclonic rain and it occurs along the fronts of the cyclone. As the warm air rises, it cools, and the moisture present in it condenses to form clouds. This rain falls gradually for a few hours to a few days. |