Actions to Limit Climate Change
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Transcript of Actions to Limit Climate Change
Actions to Limit Climate Change
SNC2D1Grade 10 Science
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
• Switching from fossil fuels to clean energy sources is one of the main ways to reduce the impacts of human activity on climate
Wind power Geothermal energy Solar power
Hydroelectricity Biofuels Nuclear power
Renewable Energy Sources
Green Roof Technology
• Video 1 (BCIT):• Green_Roof_Soili
ng_at_BCIT_-_3_Blog_Nights__SAT_-_5AM_.mp4
Vancouver Convention & Exhibition Center (VCEC)
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
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
Reducing GHG EmissionsProvincial 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
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
What Canadian businesses & industries can do:
•Drive less•Use Hybrid/Electric vehicals •Drive more efficiently (i.e. less idling)Transportati
on•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 incentivesBuilding & Contracting
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, recycleWaste managem
ent
•Plant more trees•Reduce deforestation•Use biofuels instead of fossil fuels
Forests
50%
29%
11%
8%
2%
Personal Greenhouse Gas Emissions from Energy use in Canada
transportationhome heating & coolingwater heatingappliances & lightslighting
Brainstorm
What can YOU do to reduce your greenhouse gas emissions?
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
Benefits:1. protect people’s health2. saves money3. improves your city or town4. protects traditional activities5. protects the environment