1.
The role of the IPCC in assessing
the Science of Climate Change
E d u a r d o C a l v o , I P C C T F I C o - C h a i r
H a v a n a , 2 7 / 1 / 2 0 2 3

2.
H I S T O R Y & M A N D A T E
First Session of the IPCC, 1988

3.
IPCC
Jointly established
by WMO and UNEP
1988
1980 2000 2010 2020 2030
SR15
FAR
UNFCCC
1990
TAR
Adaptation
2001
SAR
Kyoto
Protocol
1995
AR5
Paris
Agreement
2013-14
2018 Sixth Assessment
Report
2021
UNFCCC
Global
Stocktake
2023
GROWING PUBLIC
AWARENESS
INCREASING
STAKEHOLDER
INVOLVEMENT
1990
AR4
2°C limit
Nobel
Peace
Prize
2007
2019
SROCC
SRCCL
GROWTH IN
SCIENTIFIC
RESEARCH ON
CLIMATE CHANGE
H I S T O R Y | E V O L U T I O N O F T H E I P C C
WGII
2022
WGIII
SYR

4.
THE ROLE OF THE IPCC IS...
“… to assess on a comprehensive, objective, open and
transparent basis the scientific, technical and socio-economic
information relevant to understanding the scientific basis of risk
of human-induced climate change, its potential impacts and
options for adaptation and mitigation.”
“IPCC reports should be neutral with respect to policy,
although they may need to deal objectively with scientific,
technical and socio-economic factors relevant to the
application of particular policies.”
PRINCIPLES GOVERNING IPCC WORK, PARAGRAPH 2
SOURCE: HTTP://WWW.IPCC.CH/PDF/IPCC-PRINCIPLES/IPCC-PRINCIPLES.PDF

5.
S T R U C T U R E
AR5 Working Group III, South Korea, 2011

6.
Intergovernmental Panel
195 member States appointing National
Focal Points
Hundreds of scientists and experts from
around the world are involved in the
preparation of IPCC reports
WGI
The Physical Science
Basis
WGIII
Mitigation of
Climate Change
WGII
Impacts, Adaptation &
Vulnerability
TFI
Task Force
on National
Greenhouse Gas
Inventories
BUREAUX
EXECUTIVE
COMMITTEE
PLENARY
Expert
Reviewers
Authors &
Scientists
Review
Editors
S T R U C T U R E | G O V E R N A N C E

7.
S T R U C T U R E | S C I E N C E - P O L I C Y I N T E R F A C E
BUREAUX
EXECUTIVE
COMMITTEE
PLENARY
Expert
Reviewers
Authors &
Scientists
Review
Editors
WORKING
GROUP I
The Physical
Science Basis
WORKING
GROUP III
Mitigation of
Climate Change
WORKING
GROUP II
Impacts, Adaptation
& Vulnerability
TASK FORCE
ON
INVENTORIES
Task Force on National
Greenhouse Gas
Inventories
Policy and science work together to provide rigorous and balanced
scientific information on climate change

8.
I P C C R E P O R T S

9.
Assessment
Reports
1990, 1995, 2001, 2007, 2013-14
2021 – 2022 Sixth Assessment Report
in progress
Special
Reports
1997, 1999, 2000,
2005, 2011, 2012,
2018, 2019
Guidelines for
national GHG
inventories, good
practice guidance
1995, 1996, 2000, 2003,
2006, 2013, 2019
Technical
Papers
1996-2008
1992 Supplementary report
1994 Special report
5 14 6
9
IPCC R E P O R T S

10.
A S S E S S M E N T
R E P O RT S
IPCC P R O D U C T S | A S S E S S M E N T R E P O R T S

11.
IPCC P R O D U C T S | S P E C I A L R E P O R T S
S P E C I A L
R E P O RT S

12.
IPCC P R O D U C T S | M E T H O D O L O G Y R E P O R T S
M E T H O D O L O G Y
R E P O RT S

13.
IPCC P R O D U C T S | T E C H N I C A L PA P E R S
T E C H N I C A L
PA P E R S

14.
SCIENCE
Informing and supporting
the scientific community.
POLICY
Providing policymakers
with the latest
understanding of climate
science.
OUTREACH
Educating critical
stakeholder communities
- including policymakers,
businesses, and youth.
MEDIA
Working with media to
promote the latest
scientific findings.
IPCC P R O D U C T S | U S I N G T H E R E P O R T S

15.
@IPCC
Website: ipcc.ch
IPCC Secretariat: ipcc-sec@wmo.int
IPCC Press Office: ipcc-media@wmo.int
@IPCC_CH
linkedin.com/company/ipcc
F O R M O R E I N F O R M A T I O N : C O N N E C T W I T H U S :
THANK YOU
FOR YOUR ATTENTION!
Eduardo Calvo
IPCC TFI Co-Chair
ECALVOB@UNMSM.EDU.PE