Sixth Assessment Report
Synthesis Report
20 March 2023

Fog Opening the Dawn
Chung Jin Sil
Weather and Climate Photography & Video Contest 2021
Korea Meteorological Administration

Sixth Assessment Report | Synthesis Report

The State of Knowledge
about Climate Change
WGI

WGII

WGIII

Special Report

AR6 Climate Change 2021:
The Physical Science Basis

Climate Change 2022:
Impacts, Adaptation andVulnerability

Climate Change 2022:
Mitigation of Climate Change

Ocean and Cryosphere in a
Changing Climate

Sixth Assessment Report | Synthesis Report

Climate Change and Land

Global Warming of 1.5 ºC

The warningfi

Sixth Assessment Report | Synthesis Report

Pace and scale of climate action are
insuf cient to tackle climate change

Adverse
impacts fromhuman-causedchange will
intensify
Sixth Assessment Report | Synthesis Report

Water scarcity and food production

Health and wellbeing

Cities, settlements and infrastructure

Ecosystem structure, species range shifts and changes in timing

Extremes become more widespreadand pronounced with every
increment of warming+1.5°C

Sixth Assessment Report | Synthesis Report

+2°C

+3°C

+4°C

The hope

Sixth Assessment Report | Synthesis ReportMainstreaming effective and equitable climateaction now will reduce losses and damages
for nature and people.

The hope

Climate action provides co-bene ts.
Multiple, feasible and effective options areavailable to reduce GHG emissions
and adapt to human-caused climate change.

fiSixth Assessment Report | Synthesis Report

Thechallenge• Cut emissions quickly, sharply to create asafer, sustainable world• Scale up practices and infrastructure toenhance resilience• Cut global GHG emissions by nearly halfby 2030• Action required along numerous

dimensions

Sixth Assessment Report | Synthesis ReportThe path forward is clear
Tried and tested
options available now

Sixth Assessment Report | Synthesis Report

Need to be designed
for diverse contexts

Need to be scaled up
and applied widelyFairness is
one of thesolutions• Those who contributed the least to climatechange are often the most vulnerable to its
impacts.
• Millions exposed to acute food insecurity,reduced water security.
• Biggest impacts in parts of Africa, Asia,

Central/South America, LDCs, Small Islands,Arctic.
• People in highly vulnerable areas up to 15x

more likely to die in oods, droughts, storms(compared to those in in most resilient areas)

flSixth Assessment Report | Synthesis ReportIncreased
financing forclimate action• 3-6 times the current climate investment• But there is enough global nancing torapidly reduce emissions• Developing countries require externalfunding to meet adaptation needs• Options are available to scale up nancing

fifi

Sixth Assessment Report | Synthesis Report

The way forward:

Climate-resilient
development

Integrating measures to adapt to climate changewith actions to reduce emissions in ways thatprovide wider bene ts:• Improving peoples’ health and livelihoods• Reducing poverty and hunger• Clean energy, water and airfi

Sixth Assessment Report | Synthesis Report

Enablers for effective
climate action
Politicalcommitment

Sixth Assessment Report | Synthesis Report

Inclusive
governanceInternational
cooperation

Effective
ecosystem
stewardship

Sharing ofdiverse
knowledge

Humanfactors alsoenable action

Trust

Sharing ofbene ts andburdens

Collaboration

Recognition

that some can contribute
more than othersfiSixth Assessment Report | Synthesis ReportOur choices willreverberate forhundreds,
even thousands,of years.
Sixth Assessment Report | Synthesis Report