Geography- Climate Revision Cards

Revision cards for Climate and Weather, AQA A2 Geography.

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  • Created by: Pheebie
  • Created on: 25-10-12 14:57

Factors Effecting Weather

  •  Fronts
  • Cloud cover
  • Latitude
  • Distance from sea
  • Ocean Currents/ Conveyor belt
  • Prevailing Winds
  • North/ South facing slope
  • Diurnal range
  • Altitude
  • Seasons
  • Urbanisation/ Urban heat island effect
  • Time of day
  • Angle of the sun
  • High/ Low pressure
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Types of Cloud

(http://eo.ucar.edu/webweather/images/cloudchart.gif)

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Tri- Cellular Model

(http://www.geogonline.org.uk/images/g3a_19.gif)

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Coriolis Effect

Every point on the Earth's surface rotates over a 24 hour period.

This causes air to move East in the Northern atmosphere and West in the Southern atmosphere. 

                         (http://t1.gstatic.com/images?q=tbn:ANd9GcQfZA9rJOUAJmAiVj0JRugwVavQ_2_AFHLDf5Dwef3n4j0IOiScog)

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Pressure Gradient and Geostrophic Winds

PRESSURE GRADIENT: Force and deflection at a balance leads to pressure moving from high to low or low to high. It can be described as change in pressure across a given difference. 

GEOSTROPHIC WINDS: Result of exact balance between Coriolis force and pressure gradient where the wind runs exactly parallel to isobars. 

(http://t0.gstatic.com/images?q=tbn:ANd9GcTBounwHN7exDDvoYtQQ05AD-e3FdufR27acAVV-Uxlc-Xew2Eu)                           (http://t2.gstatic.com/images?q=tbn:ANd9GcTQPtkf10YTkuwG10iB5DkUhOU3KFLMT3AV5e_UR9oyHOBTcwJTrA)

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JET STREAM

  • Fast flowing air currents in the Earth's atmosphere.
  • Meandering shape.
  • There are two types; the Polar Jet Stream and the Sub-Tropical Jet Stream.
  • Caused by a combination of the Earth's rotation and atmospheric heating.
  • Since 2007- it has being low across UK meaning it has become a lot colder.
  • Width of 2km and depth of 5km.
  • Lies about 7-12km above the Earth's surface.
  • Polar jet stream is stronger as it's closer to sea level.
  • Moves between 100-300km per hour.
  • Located in the troposphere.

                   (http://t1.gstatic.com/images?q=tbn:ANd9GcTQwSTt32zwTXp3cBTbRcvFh2UXgBLQmf84fraunbYfMsfzvf8T)

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El Nino & La Nina

El Nino:

  • Occurs across tropical Pacific Ocean approx. every 5 years.
  • Also called Southern oscillation.
  • Causes a warm rush into the ocean of about 5 degrees increase.
  • This intern causes change in climate and weather around the world.
  • Causes drier weather in usually wet places and wet weather in usually dry places.
  • LA NINA is the opposite effect. It's caused by over compensation after El Nino.

          La Nina(http://t3.gstatic.com/images?q=tbn:ANd9GcSfjWulslXIRxdEkdmy5H_KCo7iFxj3oiGvwbp9kRuv8kB2vTeO)

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