Causes of Precipitation Flashcards
Convectional Rainfall
Sun heats the ground.
Warm Air near the ground rises, when its high enough to cool it condenses.
Rain
Convectional Rainfall Case Study
Coverack July 2017
Coverack July 2017 Cause
Rapid thunderstorms dropped 105mm of rain in a very short period.
Coverack July 2017 Impact
50 properties affected
Roads closed
Frontal Rainfall
Where one area of cold air and warm air meet at a front.
Less dense warm air rises over the cool front resulting in it to cool and therefore condense creating rainfall.
Stratus Clouds
Frontal Rainfall
Warm air gradually rises over cold air resulting in prolonged light rainfall.
Cumulus Clouds
Frontal Rainfall
Warm air steeply rises over the cold air resulting in heavy rain over a short period.
Orthographic Rainfall
When air is forced to rise over elevated terrain resulting in cooling, condensation and precipitation.
Himalayan Mountains - Orthographic
Windward Side - Northern India
Leeward Side - Tibet, China
Windward Side
Side of the mountain receiving the incoming wind.
Experiences much more rainfall
Leeward Side
The side of the mountain not experiencing rain.
Much drier