difference between orographical andconventional rainfall
Answers
Convectional rainfall: It is typical of warm moist air by heating from the ground surface. As a result of heating of the surface air, the air expands and forced to rise to great height. As the air rises, it cools and becomes saturated and dew point temperature(the temperature at which water vapour in the air condense(gas-liquid)) is attained and then clouds will form. By further cooling, precipitation takes place.
Orographic/Relief rainfall: It occurs when large mass of air is forced to rise across landform barriers, such as high mountain ranges, plateau, escarpment, or over high hills. the leeward side of such mountain barrier where the air is ascending and warming are characteristically drier are called rain shadow region. It's most common on the windward slopes of the mountain where the on-shore moisture laden-winds come from sea.