Changing Climate - Entire topic

  • Created by: Amee204
  • Created on: 15-05-19 14:24
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  • Changing Climate
    • Evidence
      • In Poles
        • Ice Cores
          • layers of snow
            • light
              • summer
                • Thickness show amount of snow
            • dark
              • winter
                • Thickness show amount of snow
          • Go to 800,000 years ago
        • Evidence in Snow
          • gases
            • amount of oxygen
            • tell if it was warm or cold
        • Matching Temperatures
          • Compare newer ice to older ice
        • Sea Positions
          • minimum ice
            • September
            • decreasing
              • 13.3% smaller every 10 years
                • Global Warming
          • maximum ice
            • February and March
            • decreasing
              • 13.3% smaller every 10 years
                • Global Warming
      • Globally
        • Data
          • 1880
            • Reliable temperature
          • 1659
            • Central England Temperature Record
              • Monthly average temperatures
        • Using Data
          • Compare time periods
          • 1880-2014
            • 2014
              • warmest average temperature
              • 0.69 degrees
        • Criticizing
          • Not enough stations for accurate data
          • equipment might not always be accurate
          • Placement not right
            • top/bottom of hill different results
      • Paintings and Diaries
        • 1309-1814
          • River Thames
            • Froze 23 times
          • 5 times
            • had a market
          • Little Ice Age
    • Impacts
      • Global
        • Food
          • Supplies
            • warmer climate
              • Crops failing
                • wheat and rice
                  • declining
          • Water
            • Lack of freshwater
              • sea water salty
            • Mostly effects dry areas
        • Death
          • Plants and Animals
            • Threats in the Arctic
              • Polar bears
                • Has to swim further to find food
                • Number of seals declining
                  • pups get separated from there mothers
                • cubs die
            • A quarter of all species will be extinct by 2050
            • Species Refugees
              • Butterflies
          • Disease
            • Health
              • Increasing infectious diseases
                • Mosquito moves
                • Infected Water
                  • Because of flooding
            • Food Supply
              • affects plants and crops
                • Pests
                • coffee
        • People
          • Refugees
            • people forced to leave homes because of the climate
            • 2050
              • 100 million people move because of rising sea levels
          • Disappearing Islands
            • Maldives
              • In the Indian Ocean
              • tourism main source of money
              • erosion and flooding
                • tourism main source of money
                • water acidic
                  • less fish
          • Extreme Weather
            • more frequent storms
              • Typhoon Haiyan
            • Heatwaves more common
              • 2003
                • hottest summer for 500 years
                • London Eye closed for days
                • 20,000 people died
                • France
                  • hospitals overflowing
                  • temporary storage for dead
            • 4 million refugees
          • Rising Sea Levels
            • Melting Ice Caps
              • Artic and Antartica
                • more water is added to ocean
            • Melting Glaciers
              • Water that was stored as ice is added to the ocean
            • Thermal Expansion
              • Water Expands
                • As Temperature Rises
          • Lake Chad
            • Disappearing
              • Droughts
                • Increases Evaporation
              • Rainfall reduced
                • More water taken for farmers
            • Many Conflicts
      • UK
        • heat
          • problems
            • Death and Illness
            • Water Shortages
          • benefits
            • Tourism
            • Farming
              • Cooking Success
        • Coastal Flooding
          • 2007
            • wellest May and June
            • costs £3.2 billion
            • Tewkesbury
              • rained 14 hours
              • 3 people died
              • 1800 houses cut off
              • 50,000 with no electricity
              • 135,000 were without water for 17 days
              • Breeding grounds for birdssuffered
          • 30% population in 10 miles of coast
          • higher percentage of elderly
        • Weather
          • Extreme Rainfall
            • causes flash floods
            • sea flooding
              • costs £1.3 billion
              • 2080
                • £12 billion
    • Changing Climate
      • Fluctuating Temperatures
        • warm
          • Inter glacial periods
            • 10,000 years
            • Today
              • began 11,700 years ago
              • 10% of ice covered
        • cold
          • Glacial Periods
            • 100,000 years
          • 22,000 years ago
            • 30% covered in ice
      • Opinions Depends on Time
        • big changes in temperature
        • Medieval
          • Little ice age
      • Recent Changes
        • 1880
          • Biggest effect of human activity
    • Causes
      • Natural
        • Milankovitch Cycle
          • Precession (wobble)
            • caused by force of gravity
            • axis makes a circle shape
              • over 23,000 years
            • Change seasons
          • Obliquity (tilt)
            • 40,000 years
              • 21.5 to 24.5 degrees
            • UK
              • Summer
                • tilted towards sun
              • winter
                • tilted away from sun
              • less tilt
                • weather mild
          • Eccentricity (orbit)
            • Today
              • Perfect Circle
            • 100,000 years later
              • oval
            • sun closer and further away at different points
              • further away during summers
          • effects climate
        • Sun Spots
          • Caused by magnetic  Storms
            • Increases amount of energy Earth receives from sun
          • 11 year cycle
            • Little Ice Age
              • Less Sun Spots
            • Warm Period
              • More  Sun Spots
        • Volcanic Eruptions
          • Release dust
            • Blocks sun
              • Cooler
          • 15th June 1991
            • Mt Pinatubo erupted
              • 20 million tonnes of sulfur dioxide
                • Earths temeprature fell by 1 degree
          • Periods
            • Medieval warm period
              • Less Volcanic Activity
            • Little Ice Age
              • More Volcanic Activity
      • Human
        • Greenhouse Effect
          • Enhanced
            • Humans put more greenhouse gases in atmosphere
              • Makes the gas layer thicker
                • Traps more suns energy
                  • Increases Earths temperature
          • Gases
            • Carbon Dioxide
            • Water Vapour
              • More of it than any other gas
          • Traps suns radiation
            • Increases Earths Temperature
        • Enhanced Gases
          • Carbon Dioxide
            • 60% enhanced gases
            • Burning Fossil Fuels
          • Halo carbon
            • Man made gas
              • very effective with greenhouse effect
          • Methane
            • 15% of Enhanced Greenhouse Gases
            • Landfill sites, cow farming
          • Nitrous Oxide
            • 6% enhanced gases
            • fertilisers

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