Unit 2 - Key Area 4 (Atmosphere)
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The proportion of light that is reflected by ice or snow
Albedo
What is Climate change?
A large-scale, long-term shift in Earth’s weather patterns or average temperatures. Encompasses global warming.
Biome found at 30 degrees latitude
Hot desert
Biome found at 0 degrees latitude
Tropical rainforest
Biome found at 60 degrees latitude
Temperate forest
Biome found at 90 degrees latitude
Tundra (cold, dry)
Natural Climate Change (3 types)
• Cosmic changes (Milankovitch cycles) • Solar/Sun spot activities • Volcanic activity
Name a cause of anthropogenic (man-made) climate change
Burning of fossil fuels for industry, transport, domestic use. -This releases gases such as CO2, SO2 and NO2
Umbrella term for gases that trap solar radiation in the atmosphere
Greenhouse Gases
The type of air cell that moves between 0 and 30 degrees latitude?
Hadley Cells
Describe the temperature and movement of air in a Hadley Cell?
• Hot air rises at 0 degrees - causes low pressure - Cool air sinks at 30 degrees - causes high pressure
The type of air cell that moves between 30 and 60 degrees latitude?
Ferrel Cells
Describe the temperature and movement of air in a Ferrel Cell?
• Cool air sinks at 30 degrees - causes high pressure - Hot air rises at 60 degrees - causes low pressure
At high pressure is there low or high rainfall?
Low precipitation (remember high and dry)
At low pressure is there low or high rainfall
High precipitation
The type of air cell that moves between 60 to 90 degrees latitude?
Polar Cells
Describe the temperature and movement of air in a Polar Cell?
Hot air rises at 60 degrees - low pressure Cold air falls at 90 degrees - high pressure
Biome associated with 90 degrees?
Cold desert / Tundra
Biome associated with 60 degrees?
Temperate forest
Biome associated with 30 degrees?
Hot desert
Biome associated with 0 degrees?
Tropical rainforest