Limiting climate change to 1.5°C - Chemical …...Global Warming of 1.5 C An IPCC special report on...
Transcript of Limiting climate change to 1.5°C - Chemical …...Global Warming of 1.5 C An IPCC special report on...
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Linda Steg
Department of Psychology
University of Groningen
Limiting climate
change to 1.5°C
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Global Warming of 1.5°C
An IPCC special report on the impacts of global
warming of 1.5°C above pre-industrial levels and
related global greenhouse gas emission pathways, in
the context of strengthening the global response to
the threat of climate change, sustainable
development, and efforts to eradicate poverty.
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The report in numbers
91 Authors from 40 Countries
133 Contributing authors
6000 Studies 1 113 Reviewers
42 001 Comments
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Understanding Global
Warming of 1.5°C
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Where are we now?
Since pre-industrial times, human activities have caused
approximately 1°C of global warming.
• Already seeing consequences for people, nature and
livelihoods
• At current rate, would reach 1.5°C between 2030
and 2052
Ashley Cooper / Aurora Photos
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Projected Climate
Change, Potential Impacts
and Associated Risks
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SPM2|
Confidence level for transition: L=Low, M=Medium, H=High and
VH=Very high
How the level of global warming affects impacts and/or risks
associated with the Reasons for Concern (RFCs) and selected
natural, managed and human systems
Level of additional
impact/risk due
to climate change
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SPM2|
Confidence level for transition: L=Low, M=Medium, H=High and
VH=Very high
How the level of global warming affects impacts and/or risks
associated with the Reasons for Concern (RFCs) and selected
natural, managed and human systems
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Impacts of global warming 1.5°C
• Less extreme weather where people live, including
extreme heat and rainfall
• By 2100, global mean sea level rise will be around 10
cm lower but may continue to rise for centuries
• 10 million fewer people exposed to risk of rising seas
At 1.5°C compared to 2°C:
Jason Florio / Aurora Photos
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Impacts of global warming 1.5°C
At 1.5°C compared to 2°C:
• Lower impact on biodiversity and species
• Smaller reductions in yields of maize, rice, wheat
• Global population exposed to increased water
shortages is up to 50% less
Andre Seale / Aurora Photos
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Impacts of global warming 1.5°C
At 1.5°C compared to 2°C:
• Lower risk to fisheries and the livelihoods that
depend on them
• Up to several hundred million fewer people exposed
to climate-related risk and susceptible to poverty by
2050
Natalie Behring / Aurora Photos
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Emission Pathways and System
Transitions Consistent with
1.5°C Global Warming
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SPM3a|Global emissions pathway characteristics
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SPM3b|Characteristics of four illustrative model
pathways
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SPM3b|Characteristics of four illustrative model
pathways
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SPM3b|Characteristics of four illustrative model
pathways
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SPM3b|Characteristics of four illustrative model
pathways
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SPM3b|Characteristics of four illustrative model
pathways
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Greenhouse gas emissions pathways
• To limit warming to 1.5°C, CO2 emissions fall by
about 45% by 2030 (from 2010 levels)
• To limit warming to 1.5°C, CO2 emissions would need
to reach ‘net zero’ around 2050
• Reducing non-CO2 emissions would have direct and
immediate health benefits
Compared to 20% for 2°C
Compared to around 2075 for 2°C
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Robert van Waarden / Aurora Photos
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Greenhouse gas emissions pathways
• Limiting warming to 1.5°C would require changes on
an unprecedented scale
Deep emissions cuts in all sectors
A range of technologies
Behavioural changes
Increased investment in
low carbon options
Neil Emmerson / Aurora Photos
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Greenhouse gas emissions pathways
• Progress in renewables would need to be mirrored
in other sectors
• We would need to start taking carbon dioxide out of
the atmosphere
• Implications for food security, ecosystems and
biodiversity
Peter Essick / Aurora Photos
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Greenhouse gas emissions pathways
• National pledges are not enough to limit warming to
1.5°C
• Avoiding warming of more than 1.5°C would require
CO2 emissions to decline substantially before 2030
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Gerhard Zwerger-Schoner / Aurora Photos
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Strengthening the Global Response in the
Context of Sustainable Development and
Efforts to Eradicate Poverty
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SPM4|Indicative linkages between mitigation and
sustainable development using SDGs (the linkages
do not show costs and benefit)
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SPM4|Indicative linkages between mitigation and
sustainable development using SDGs (the linkages
do not show costs and benefit)
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SPM4|Indicative linkages between mitigation and
sustainable development using SDGs (the linkages
do not show costs and benefit)
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SPM4|Indicative linkages between mitigation and
sustainable development using SDGs (the linkages
do not show costs and benefit)
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SPM4|Indicative linkages between mitigation and
sustainable development using SDGs (the linkages
do not show costs and benefit)
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SPM4|Indicative linkages between mitigation and
sustainable development using SDGs (the linkages
do not show costs and benefit)
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Climate change and people
• Close links to United Nations Sustainable
Development Goals (SDGs)
• Mix of measures to adapt to climate change and
reduce emissions can have benefits for SDGs
• National and sub-national authorities, civil society,
the private sector, indigenous peoples and local
communities can support ambitious action
• International cooperation is a critical part of limiting
warming to 1.5°C
Ashley Cooper/ Aurora Photos
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• Which behaviour causes the problem?
• Which factors influence the behaviour?
• Which strategies can be implemented to change these factors and behaviour
• Effects
• Acceptability
Psychology and limiting climate
change to 1.5°C
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Factors influencing public acceptability
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Acceptatie Files Milieu Parkeren
voor proef na proef
Acceptability Traffic jams Environment Parking
Before After
0
20
40
60
voor proef na proef
Additional costs per
week (Swedish
krona)
Before AfterBefore After
Stockholm congestion trial
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Q&AQuestions?