Concept:Rainfall types are classified by the mechanism that lifts air: convectional, orographic, or cyclonic. The diagram shows cyclonic (frontal) rainfall where warm and cold air masses meet.Explanation:In cyclonic rainfall, a warm air mass and a cold air mass collide. The warm, lighter air is forced to rise over the cold, dense air. As it rises, it cools and condenses, forming clouds and precipitation. This type is also called frontal rainfall. The diagram typically depicts a front with warm and cold air meeting. Orographic rainfall occurs when air is forced up a mountain; convectional rainfall results from local heating of the earth's surface; pre‑monsoon rainfall is a seasonal phenomenon. Thus, the given diagram illustrates cyclonic rainfall.
Types of rainfall
Characteristics
Cyclonic Rainfall
This type of rainfall is formed by the frontal system surrounding extratropical cyclones.Cyclone is formed when warm air meets cold air.Stratiform rainfall usually occurs from the nimbostratus clouds.
