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Name. Role. IPCC reports are the result of extensive work of many scientists from around the world. 1 Summary for Policymakers. 1 Technical Summary. 16 Chapters. 235 Authors. 900 Reviewers. More than 2000 pages. Close to 10,000 references. More than 38,000 comments.

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slide1
Name

Role

ipcc reports are the result of extensive work of many scientists from around the world
IPCC reports are the result of extensive work of many scientists from around the world.

1 Summary for Policymakers

1 Technical Summary

16 Chapters

235 Authors

900 Reviewers

More than 2000 pages

Close to 10,000 references

More than 38,000 comments

there is far more carbon in the ground than emitted in any baseline scenario
There is far more carbon in the ground than emitted in any baseline scenario.

Based on SRREN Figure 1.7

ghg emissions growth between 2000 and 2010 has been larger than in the previous three decades
GHG emissions growth between 2000 and 2010 has been larger than in the previous three decades.

Based on Figure 1.3

slide7
About half of cumulative anthropogenic CO2 emissions between 1750 and 2010 have occurred in the last 40 years.

Based on Figure 5.3

regional patterns of ghg emissions are shifting along with changes in the world economy
Regional patterns of GHG emissions are shifting along with changes in the world economy.

Based on Figure 1.6

slide9
GHG emissions rise with growth in GDP and population; long-standing trend of decarbonisation of energy reversed.

Based on Figure 1.7

slide10
GHG emissions rise with growth in GDP and population; long-standing trend of decarbonisation of energy reversed.

Based on Figure 1.7

slide12
Without additional mitigation, global mean surface temperature is projected to increase by 3.7 to 4.8°C over the 21st century.

Based on WGII AR5 Figure 19.4

slide13
Stabilization of atmospheric concentrations requires moving away from the baseline – regardless of the mitigation goal.

Based on Figure 6.7

slide14
Stabilization of atmospheric concentrations requires moving away from the baseline – regardless of the mitigation goal.

~3°C

Based on Figure 6.7

delaying mitigation increases the difficulty and narrows the options for limiting warming to 2 c
Delaying mitigation increases the difficulty and narrows the options for limiting warming to 2°C.

„immediate action“

slide20
Delaying mitigation is estimated to increase the difficulty and narrow the options for limiting warming to 2°C.

„delayed mitigation“

„immediate action“

slide21
Delaying mitigation is estimated to increase the difficulty and narrow the options for limiting warming to 2°C.
slide22
Delaying mitigation is estimated to increase the difficulty and narrow the options for limiting warming to 2°C.

Current Cancun Pledges imply increased mitigation challenges for reaching 2°C.

Based on Figures 6.32 and 7.16

mitigation can result in large co benefits for human health and other societal goals1
Mitigation can result in large co-benefits for human health and other societal goals.

Based on Figures 6.33 and 12.23

slide28

Low stabilization scenarios are dependent upon a full decarbonization of energy supply in the long term.

slide29
Baseline scenarios suggest rising GHG emissions in all sectors, except for CO2 emissions in the land‐use sector.

Based on Figure TS.17

slide30
Mitigation requires changes throughout the economy. Systemic approaches are expected to be most effective.

Based on Figure TS.17

decarbonization of energy supply is a key requirement for limiting warming to 2 c
Decarbonization of energy supply is a key requirement for limiting warming to 2°C.

Based on Figure 7.11

slide33
Energy demand reductions can provide flexibility, hedge against risks, avoid lock-in and provide co-benefits.

Based on Figure 7.11

slide34
Reducing energy demand through efficiency enhancements and behavioural changes are a key mitigation strategy.

Based on Figure 6.37

slide35
Reducing energy demand through efficiency enhancements and behavioural changes are a key mitigation strategy.

Based on Figure 6.37

slide36

The wide-scale application of available best-practice low-GHG technologies could lead to substantial emission reductions

slide37
Examples from power supply: Many technologies exist to reduce GHG emissions, but do so to different degrees.
slide38
Costs of many power supply technologies decreased substantially, some can already compete with conventional technologies.

Based on Figure 7.7

private costs of reducing emissions in transport vary widely societal costs remain uncertain
Private costs of reducing emissions in transport vary widely. Societal costs remain uncertain.

Based on Figure TS.21

slide41

Effective mitigation will not be achieved if individual agents advance their own interests independently.

slide42
Substantial reductions in emissions would require large changes in investment patterns and appropriate policies.

Based on Figure 16.3

there has been a considerable increase in national and sub national mitigation policies since ar4
There has been a considerable increase in national and sub-national mitigation policies since AR4.

Based on Figures 15.1 and 13.3

sector specific policies have been more widely used than economy wide policies
Sector-specific policies have been more widely used than economy-wide policies.

Based on Figure 10.15

slide45
Climate change mitigation is a global commons problem that requires international cooperation across scales.

Based on Figure 13.1

slide46
Forms of international cooperation vary in their focus and degree of centralization and coordination.
slide47
Effective mitigation will not be achieved if individual agents advance their own interests independently.

Based on Figure 13.2