climate change and global warming: is it too late? special assembly class 3.1
TRANSCRIPT
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Climate Change and Global Warming: Is it too
Late?
Climate Change and Global Warming: Is it too
Late?Special Assembly Class 3.1
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Contents: Contents:
1. What is Climate and Climate Change?2. What is global warming?3. Is global warming bad?
4. What are the greenhouse gases?5. How are extra greenhouse gases produced?
6. What's the 'ozone layer' got to do with global warming ?
7. So what could happen?8. What's being done about it?
9. What can I do?10. And Governments????????????
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1. What is Climate and Climate Change?
1. What is Climate and Climate Change?
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2. What is global warming?2. What is global warming?
• rise in temperature
• 6 ½ degrees warmer
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3. So is global warming bad?3. So is global warming bad?• earth is naturally
warmed by sun
• atmosphere's = layers of gases
• greenhouse gases
• thermal blanket
• plants and humans survive @ 16°C
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4. What are the greenhouse gases?
4. What are the greenhouse gases?
Made Up of :
Water Vapour
Carbon Dioxide
Methane
Nitrous Oxide
Ozone
Chlorofluorocarbons (CFCs)
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Water Vapour (Cycle)Water Vapour (Cycle)
Evaporation
CondensationPrecipitation
Surface Runoff
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carbon dioxide carbon dioxide
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Methane Methane
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Nitrous OxideNitrous Oxide
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OzoneOzone
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chlorofluorocarbons (CFCs)chlorofluorocarbons (CFCs)
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5. How are extra greenhouse gases produced?
5. How are extra greenhouse gases produced?
• Burning of 'fossil fuels'
• Cutting down of forests
• Animal waste which lets off methane
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6. What's the 'ozone layer' got to do with global warming ?
6. What's the 'ozone layer' got to do with global warming ?
• ozone (a type of oxygen)
• protects the earth • harmful rays called
UVB
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• Sea levels rise • Melting of glaciers• Flooding• Lakes/rivers = dry up • Droughts • Plants/animals =
extinct • Severe Storms
7. So what could happen?7. So what could happen?
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7. What's being done about it?7. What's being done about it?• NOT EVERY ONE
AGREES!!!!!!!!
• Earth Summit • Rio de Janeiro (1997)
• UN- Kyoto, Japan • February 2003, the
British Government = Green Energy
• IPCC Report 2/2/07
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Intergovernmental Panel on Climate Change (IPCC) Report 2/2/2007
www.ipcc.ch
Intergovernmental Panel on Climate Change (IPCC) Report 2/2/2007
www.ipcc.ch• 2500+ scientific expert reviewers• 800+ contributing authors and• 450+ lead authors from• 130+ countries• 6 years work• 4 volumes• 1 report
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Past Warnings (IPCC Report )Past Warnings (IPCC Report )
• Over past 100 years• Global surface temperatures = ↑ by 0.74°C• 11 of the past 12 years; warmest years on
record• Human activity is ‘very likely’ the cause of
most of this (90%)• Global warming is evident• Ocean warming extends to 3,000m in depth• Mountain glaciers/snow are declining• Sea level rose globally by 1.8 mm/y (1961-
2003)• Since 1970s droughts intensified
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Forecast For 21st Century (IPCC Report)
Forecast For 21st Century (IPCC Report)
• By 2100 global average temperature = 1.1°C – 6.4 °C
• Sea levels = rise by between 18 – 58mm• Higher Co2 levels• Snow cover will contract• Heat extremes, heat waves, heavy rain• Typhoons, Hurricanes, Tornadoes
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Heat waves and periods of unusually warm weather Ocean warming, sea-level rise and coastal flooding Glaciers melting Arctic and Antarctic warming
Spreading disease Earlier spring arrival Plant and animal range shifts and population changes Coral reef bleaching Downpours, heavy snowfalls, and flooding Droughts and fires
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Malta, Gozo, Comino…Malta, Gozo, Comino…
“↑ 3°C in 100 years• No Winter• Rain = 20% less• Water Shortage• Sea Level Rise• Diseases• Loss of Agricultural Land• Loss of Biodiversity (Plants and Animals)• HEAT WAVES”
By Prof. Charles V. Sammut
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9. What can I do?9. What can I do?
• Re-cycle glass newspapers…
• Re-use plastic…
• Persuade mum/dad
• Brick into your toilet flashing
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• Use paper X2
• packaging free products
• unwanted gifts = charity shop
• kettle up with the amount of water you need
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• TV or video = off
• 1 car = lots of persons
• washing machine @ 40 °C
• Switch lights off
• Cycle to places!
• showers not baths
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And Governments????????And Governments????????
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Wave power (Renewable Energy)
Wave power (Renewable Energy)
Waves can produce energy either offshore or on coastline plant
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Wind power (Renewable Energy)
Wind power (Renewable Energy)
Wind can be used to drive turbines which in turn produce electricity
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Water power (hydro electricity-Renewable Energy)
Water power (hydro electricity-Renewable Energy)
Water is used to drive turbines to produce electricity
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Other ways of making Green Energy:
Other ways of making Green Energy:
Small scale and domestic solar energy are being developed
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Global warming linksGlobal warming links
• Hot planet: try SafeClimate
• Flying off to a warmer climate?
• Global Warming: Early warning signs
• Climate Ark - Climate Change Portal
• ClimatePrediction.net
• Friends of the Earth
• Greenpeace International
• Rocky Mountain Institute
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Thank you for your attention Thank you for your attention
THE END THE END