Transcript Climate change impacts slideshow

Climate Change
Impacts
Intergovernmental
Panel on Climate
Change
Climate Change
Worldwide
IPCC 2007
The story so far:
Carbon Dioxide
• is the most important greenhouse gas
• from a 280 parts per million before the
industrial revolution
•
to 379 ppm in 2005
• the range over last 650,000 years has been
180 to 300 ppm
• growth rate (1995–2005) averaged 1.9 ppm
per year
Climate Change in
Australia
IPCC 2007
Major Findings
•Regional climate change has occurred since
1950
•There has been 0.4 to 0.7°C of warming
•There has been an increase in the intensity of
Australian droughts
•Sea level has risen by about 70 mm
more heatwaves, fewer frosts,
more rain in north-west Australia
less rain in southern and
eastern
Less
rain Australia
Water supplies
(Into Thomson, Upper Yarra, O’Shannassy and Maroondah dams)
615 GL – 385 GL = 130 GL or 34% decrease
Graph copyright Melbourne Water
Future predictions
Rising sea levels
Significant loss of
biodiversity is projected
to occur by 2020 in some
ecologically rich sites
IPCC 2007 diagram of key issues
Risks to Buildings, Roads, etc.
•Increased storm damage
•Increased damage by bush fires
•Extreme weather events will cause more
damage to things like roads
•More blackouts
Risks to Agriculture & Forestry
Production from agriculture and forestry is
projected to decline by 2030 over much of
southern and eastern Australia due to increased
drought and fire.
Risks to Health
•Increased heat related deaths
•Warmer temperatures increase food and
water-borne diseases
•Mental health (drought causing stress)
•Increased fire smoke affecting asthma suffers
More Risks to Health
It is predicted that there will be changes to
mosquito-borne diseases like Dengue Fever &
Malaria in northern Australia.
The impacts of smog on health are still
uncertain.
How old will you
be in the year
2020?
Projected Changes
Source: IPCC, 2007
But the good
news is: