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Rainfall
- Convectional
- heavy rain from pervious storm means ground is wet
- ground is warmed from the sun
- the moisture from the ground is evaporated and rises with the warm air
- the firther away from the ground the colder the temperature
- because it is starting to become colder the water condenses
- precipitation is released
- precipitation is released
- because it is starting to become colder the water condenses
- the firther away from the ground the colder the temperature
- the moisture from the ground is evaporated and rises with the warm air
- ground is warmed from the sun
- convectional rainfall is most common in the tropics
- heavy rain from pervious storm means ground is wet
- Relief
- when warm winds are blown in from the sea carrying heavy moisture
- warm saturated air travels over a coastal mountain barrier
- air has to rise over this higher area and so will cool and condense forming rain
- air has to rise over this higher area and so will cool and condense forming rain
- warm saturated air travels over a coastal mountain barrier
- when warm winds are blown in from the sea carrying heavy moisture
- Frontal
- when warm air carried from the tropics meets cold air carried from the polar regions
- warmer saturated but lighter air rises over the cold air
- as it does it is cooled and eventually the dew point is reached and the moisture condenses
- precipitation is released
- precipitation is released
- as it does it is cooled and eventually the dew point is reached and the moisture condenses
- warmer saturated but lighter air rises over the cold air
- when warm air carried from the tropics meets cold air carried from the polar regions
- three types: Convectional, Frontal, Relief
- how it works:
- Warm air on the ground causes water to evaporate
- warm air and water vapour is forced to rise
- as it rises the air/watervapour cools
- water vapour begins to condense due to cool air, condenses to minute water droplets (clouds)
- if cooling continues increase in size of water droplets will cause rain
- if cooling continues increase in size of water droplets will cause rain
- water vapour begins to condense due to cool air, condenses to minute water droplets (clouds)
- as it rises the air/watervapour cools
- warm air and water vapour is forced to rise
- Warm air on the ground causes water to evaporate
- prevailing south westerly winds bring a lot of relief rainfall to england
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