Global temperatures rising above 1°C relative to pre-industrial levels would negatively impact food production, water availability, ecosystems, and increase extreme weather events. Stabilizing temperatures would require global emissions to peak by 2020 and be reduced substantially by 2050 according to various emissions pathways. Adaptation efforts would need to scale up overseas development aid to help vulnerable developing countries cope with the impacts of climate change.

2. Projected Impacts of Climate Change
Global temperature change (relative to pre-industrial)
0°C 1°C 2°C 3°C 4°C 5°C
Food Falling crop yields in many areas, particularly
developing regions
Possible rising yields in Falling yields in many
some high latitude regions developed regions
Water Significant decreases in water
Small mountain glaciers Sea level rise
availability in many areas, including
disappear – water Mediterranean and Southern Africa threatens major cities
supplies threatened in
several areas
Ecosystems
Extensive Damage Rising number of species face extinction
to Coral Reefs
Extreme
Weather Rising intensity of storms, forest fires, droughts, flooding and heat waves
Events
Risk of Abrupt and
Increasing risk of dangerous feedbacks and
Major Irreversible
abrupt, large-scale shifts in the climate system
Changes

3. Stabilisation and Commitment to Warming
5% 400 ppm CO2e 95%
450 ppm CO2e
550 ppm CO2e
650ppm CO2e
750ppm CO2e
Eventual temperature change (relative to pre-industrial)
0°C 1°C 2°C 3°C 4°C 5°C

4. Emissions Paths to Stabilisation
100
90
450ppm CO2e
80
Global Emissions (GtCO2e/yr)
550ppm CO2e
70
Business as Usual
60
50
40
30
20
10
0
2000 2010 2020 2030 2040 2050 2060 2070 2080 2090 2100

5. Global Emissions by Sector

6. Potential Emissions Markets from Power and
Industrial Sectors
20000
18000 Total emissions from fossil fuels
Million tonnes CO2 emissions, 2002
16000 Emissions from power and industrial sectors (estimated)
14000
12000
10000
8000
6000
4000
2000
0
European Union United States of China, India, G7 EU25, Jap, Aus, OECD Top 20 Global
(25) America Mexico, Brazil, Can, USA emitters
South Africa
(+5)

7. Adaptation: Scaling up Overseas Development Aid