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Actions to Limit Climate Change
SNC2D1Grade 10 Science
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Predicting Future Climate
• Climate projection: scientific estimate of future climate conditions based on observations and computer models
Red: if we continue burning fossil fuelsBlue: if we change tousing clean energy
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• Switching from fossil fuels to clean energy sources is one of the main ways to reduce the impacts of human activity on climate
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Wind power Geothermal energy Solar power
Hydroelectricity Biofuels Nuclear power
Renewable Energy Sources
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Green Roof Technology
• Video 1 (BCIT):• Green_Roof_Soili
ng_at_BCIT_-_3_Blog_Nights__SAT_-_5AM_.mp4
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Vancouver Convention & Exhibition Center (VCEC)
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Green roof technology
• Plants absorb sunlight for photosynthesis
• Provide insulation for buildings• Stay cooler in hot weather• Absorb storm water• Improve air quality• Reduce noise pollution• Create a link between fragmented
habitats
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Global Temperatures
• Already risen by 0.74˚C over the last 100 years
• Should limit increase to 2˚C to avoid dangerous impacts of climate change = 450 ppm of greenhouse gases (GHG)
Effects of El Nino and La Nina
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Reducing GHG Emissions
Provincial level (Ontario)• Target: reduce by 6% by 2014• Go Green: Ontario’s Action Plan– Stop coal-fired generators by 2014– Approve renewable energy projects– New improved rapid transit routes in GTA &
Hamilton– Plant 50 million trees by 2020– Ontario Stewardship Rangers – summer jobs
for 17yr olds
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Reducing GHG Emissions
• Municipal level (Toronto):– Conserve energy and reduce GHG
emissions by • 6% by 2012• 30% by 2020,• 80% by 2050
– Creating green jobs– upgrading appliances, energy efficient
lighting, building improvements
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What Canadian businesses & industries can do:
•Drive less
•Use Hybrid/Electric vehicals
•Drive more efficiently (i.e. less idling)
Transportation
•Recycle energy & use energy efficient equipment
•Capture & store CO2 released by smokestacks
•Impose taxes & limits on fossil fuel use
Industry
•Energy efficient appliances: EnerGuide
•Better insulation
•Rebates or tax incentives
Building & Contracting
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What Canadian businesses & industries can do:
•Restoration of land
•Reduce methane emission from rice farms/cattle
•Use less nitrogen fertilizer
Agriculture
•Collect methane
•Compost organic waste
•Reduce, reuse, recycle
Waste manageme
nt
•Plant more trees
•Reduce deforestation
•Use biofuels instead of fossil fuels
Forests
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50%
29%
11%
8%
2%
Personal Greenhouse Gas Emissions from Energy use in Canada
transportationhome heating & coolingwater heatingappliances & lightslighting
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Brainstorm
What can YOU do to reduce your greenhouse gas emissions?
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What can you do?
• Walk, bike, public transport, car pool• Buy fuel-efficient cars• Switch off lights & unplug appliances• Fly less• Use less A/C & heating• Plant trees• Conserve [hot] water
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Benefits:
1. protect people’s health2. saves money3. improves your city or town4. protects traditional activities5. protects the environment