3 TYPES OF RAINFALL
Rainfall is the amount of water falling in rain, snow, etc., within a given time and area, usually expressed as a hypothetical depth of coverage. Three types of rainfall are: Convectional rainfall, this type of rainfall occurs due to thermal convention due to heating of the ground surface. When the land warms up, it heats the air above it. This causes the air to expand and rise. As the air rises it cools and condenses. If this process continues then rain will fall. The following precondition must exist for this type of rainfall to occur Abundant supply of moisture through evaporation to air so that relative humidity becomes high Intense heating of the ground surface through incoming shortwave electromagnetic solar radiation Convectional rainfall occur for very short duration but occur in form of heavy showers. It makes cumulonimbus clouds. Orographic or relief rainfall, this is a type of rainfall that occurs when air has blown over the sea and is then being forced up over an area of hi...