UK Climate
- Created by: Charlie Davies
- Created on: 26-05-14 17:46
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- UK Climate
- Temperate
- Temperature in the UK varies with the seasons
- Coldest in Winter
- temperature ranges from 5oC Jan to 20oC August
- hottest in summer
- temperature ranges from 5oC Jan to 20oC August
- Coldest in Winter
- Rainfall is fairly high all year round but also varies with seasons
- Higher in Autumn and winter (120mm)
- lower in spring and summer (65mm)
- Winds in UK mostly warm south westerlies but cold north winds also common
- wind speed varies considerably by season
- generally stronger in Autumn and winter
- wind speed varies considerably by season
- Temperature in the UK varies with the seasons
- Result of Latitude and Location
- Latitude
- UK is at mid-latitude (50-55oN)
- doesn't get very hot as sun never very high
- Also not very cold as several hours of daylight even in winter
- Location (Relation to Atmospheric cells)
- UK is on northern edge of Ferrel Cell
- surface winds bring warm air from south and warm air rises= low pressure and causes depressions
- =rain throughout year
- Maritime Location
- Surrounded by water which gains and loses heat more slowly than land
- =cool wind blowing from sea to land in summer and warm winds blowing from sea to land in winter
- so summer is cooler and winter is warmer than inland locations at same latitude
- =cool wind blowing from sea to land in summer and warm winds blowing from sea to land in winter
- Surrounded by water which gains and loses heat more slowly than land
- Near Gulf Stream
- =makes UK warmer than many places at same latitude
- Latitude
- Climate in UK
- Temperature
- warmer down south because of more insolation
- Due to sun being higher in sky and therefore more hours of daylight than North
- North- less amount of insolation at higher latitudes
- Places further from sea experience higher summer temps.
- known as continentality
- warmer down south because of more insolation
- Precipitation
- North and West of UK see greater amounts of rain
- due to
- Relief Rainfall
- occurs when moist air that has been travelling over the sea is forced to rise over upland areas.
- as it rises and cools air reaches dew point (saturated) and condensation occurs=rainfall
- Rain Shadow
- as air that has lost alot of moisture over the hills sinks back down, warm up and as warm air can hold more moisture =less chance of rainfall
- occurs when moist air that has been travelling over the sea is forced to rise over upland areas.
- Frontal Rainfall
- when air is pushed up over a wedge of cooler air where two air masses meet in a frontal system
- cooler polar air undercuts warmer tropical air
- warmer air forced to rise cools, water vapour condenses forms clouds and rain over wide area
- especially in winter when successive depressions approach west shores
- warmer air forced to rise cools, water vapour condenses forms clouds and rain over wide area
- cooler polar air undercuts warmer tropical air
- when air is pushed up over a wedge of cooler air where two air masses meet in a frontal system
- Relief Rainfall
- due to
- Convectional rainfall
- rainfall due to localised heating of ground
- Air above ground is warmed becomes less dense than surrounding air and rises
- South East Britain
- rainfall due to localised heating of ground
- North and West of UK see greater amounts of rain
- Wind
- winds stronger in West
- because south westerly surface winds come over the ocean
- ocean is flat so there's nothing to slow winds down
- when hit land affected by hills and become weaker
- ocean is flat so there's nothing to slow winds down
- because south westerly surface winds come over the ocean
- strong at high altitudes as less obstacles
- winds stronger in West
- Temperature
- Temperate
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