Precipitation occurs when the local air becomes saturated with vapour and begins to rain because it can no longer hold the water vapour in a gaseous state.
Liquid, freezing, and frozen precipitation are the three forms of precipitation.
Rainfall is described as precipitation that is liquid in nature.
Convectional Rainfall-
When the Sun’s energy (or insolation) heats the Earth’s surface, water evaporates and turns to water vapour, causing convectional rainfall.
Orographic Rainfall-
Orographic precipitation, often known as orographic snow, is a type of orographic rainfall.
Orographic rainfall occurs when upland mountains react as obstacles to airflow, pushing the air to mount and moist air flowing upslope to cool down, resulting in clouds and precipitation.
Cyclonic Rainfall-
When warm and cold air collide, cyclonic downpour develops.
Warm air rises over cold air because it is lighter.
The ascending air is then cooled to the point of saturation, resulting in heavy rainfall.
Final Answer:
Three types of rainfall:-
1. Convectional
2. Orographic
3. Cyclonic