# List of abbreviations relating to climate change

This is a list of abbreviations relating to climate change causation, adaptation and mitigation.
* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* Numerical
* References

## A

* ADP - Ad Hoc Working Group on the Durban Platform for Enhanced Action
* AGN - African Group of Negotiators
* APA - Ad Hoc Working Group on the Paris Agreement
* APP - Asia-Pacific Partnership on Clean Development and Climate
* AR4 - Fourth Assessment Report of the IPCC (2007)
* AR5 - Fifth Assessment Report of the IPCC (2014)
* AR5 SYR - Synthesis Report of AR5
* AR6 - Sixth Assessment Report of the IPCC (published on 9 August 2021)
* AWG-KP - Ad Hoc Working Group on further Commitments for Annex I Parties under the Kyoto Protocol
* AWG-LCA - Ad Hoc Working Group on Long-term Cooperative Action
* AYCC - Australian Youth Climate Coalition

## B

* BAP - Bali Action Plan

## C

* C&C - Contraction & Convergence, a global CO$_2$ emissions management model promoted by the Global Commons Institute
* CAIT - The World Resources Institute's Climate Data Explorer archive
* CAPP - Climate Action Pacific Partnership
** CAPP II - Climate Action Pacific Partnership (CAPP) Conference II – 2018
** CAPP III - Third meeting of the Climate Action Pacific Partnership Conference (29-30 April 2019)
* CCA - Climate Change Agreement (UK)
* CCAFS - Climate Change, Agriculture and Food Security Research Program
* CCAF - Climate Change Action Fund (Australia)
* CCC - Committee on Climate Change (UK)
* CCCEP - Centre for Climate Change Economics and Policy
* CCCR - Canada's Changing Climate Report
* CCCS - Centre for Climate Change Studies, University of Dar es Salaam
* CCF - The Scottish Government's Climate Challenge Fund
* CCIA - Climate Change in Australia
* CC:iNet - Climate Change Information Network
* CCL - Climate Change Levy (UK)
* CCl$_2$F$_2$ - Dichlorodifluoromethane (greenhouse gas)
* CCLS - Cambridge Climate Lecture Series
* CCRA - Climate Change Risk Assessment
* CCS - Carbon Capture and Storage
* CCSO - Climate Change Support Office, within the United States' Department of State.
* CCUS - Carbon capture, utilization, and sequestration
* CDM - Clean Development Mechanism
* CDP - Organisation formerly known as the Carbon Disclosure Project
* CDR - Carbon dioxide removal
* CER - Certified Emission Reduction
* CFC - Chlorofluorocarbon
* CFRF - Climate Financial Risk Forum (UK)
* CF$_4$ - Carbon tetrafluoride or tetrafluoromethane (greenhouse gas)
* CGE - Consultative Group of Experts
* CHClF$_2$ - Chlorodifluoromethane (greenhouse gas)
* CH$_4$ - Methane
* CINC - Interdepartmental Committee of Climate Negotiators
* CLP - The Carbon Literacy Project (CLP)
* CMA - Meeting of the Parties to the Paris Agreement
** CMA1 - First meeting of the Parties to the Paris Agreement (7-18 November 2016)
*** CMA1.2 - The second part of the first session of the Conference of the meeting of the Parties to the Paris Agreement (6-17 November 2017)
*** CMA1.3 - The third part of the first session of the Conference of the meeting of the Parties to the Paris Agreement (2-14 December 2018)
** CMA2 - Second meeting of the Parties to the Paris Agreement (2–13 December 2019)
** CMA3 - Third meeting of the Parties to the Paris Agreement (postponed to 1–12 December 2021)
* CMIP - Coupled Model Intercomparison Project
** CMIP5 - Coupled Model Intercomparison Project, Phase 5
* CMP - Conference of the Parties Serving as the Meeting of Parties to the Kyoto Protocol
** CMP9 - 9th meeting of the Parties to the Kyoto Protocol (11-23 November 2013)
** CMP10 - 10th meeting of the Parties to the Kyoto Protocol (1-12 December 2014)
** CMP11 - 11th meeting of the Parties to the Kyoto Protocol (30 November-12 December 2015)
** CMP12 - 12th meeting of the Parties to the Kyoto Protocol (7-18 November 2016)
** CMP13 - 13th meeting of the Parties to the Kyoto Protocol (6-17 November 2017)
** CMP14 - 14th meeting of the Parties to the Kyoto Protocol (2-15 December 2018)
** CMP15 - 15th meeting of the Parties to the Kyoto Protocol (2–13 December 2019)
** CMP16 - 16th meeting of the Parties to the Kyoto Protocol (postponed to 1–12 December 2021)
* CNZ - Carbon Net Zero
* CO$_2$ - Carbon dioxide
* CO$_2$-e - Carbon dioxide equivalent, also CO$_2$-eq
* CoM - Covenant of Mayors for Climate and Energy (Europe)
* COP - Conference of the Parties [to the UNFCCC]
** COP1 - First UNFCCC Conference of the Parties (28 March to 7 April 1995)
** COP2 - Second UNFCCC Conference of the Parties (8-18 July 1996)
** COP3 - Third UNFCCC Conference of the Parties (1-10 December 1997)
** COP4 - Fourth UNFCCC Conference of the Parties (2-14 November 1998)
** COP5 - Fifth UNFCCC Conference of the Parties (25 October to 5 November 1999)
** COP6 - Sixth UNFCCC Conference of the Parties (13–25 November 2000)
** COP6-bis - Resumed Session of COP6 (16-27 July 2001)
** COP7 - Seventh UNFCCC Conference of the Parties (29 October - 10 November 2001)
** COP8 - Eighth UNFCCC Conference of the Parties (23 October - 1 November 2002)
** COP9 - Ninth UNFCCC Conference of the Parties (1-12 December 2003)
** COP10 - Tenth UNFCCC Conference of the Parties (6-14 December 2004)
** COP11 - Eleventh UNFCCC Conference of the Parties (28 November - 9 December 2005)
** COP12 - Twelfth UNFCCC Conference of the Parties (6-17 November 2006)
** COP13 - 13th UNFCCC Conference of the Parties (3-15 December 2007)
** COP14 - 14th UNFCCC Conference of the Parties (1-12 December 2008)
** COP15 - 15th UNFCCC Conference of the Parties (7-18 December 2009)
** COP16 - 16th UNFCCC Conference of the Parties (29 November - 10 December 2010)
** COP17 - 17th UNFCCC Conference of the Parties (28 November - 11 December 2011)
** COP18 - 18th UNFCCC Conference of the Parties (26 November - 6 December 2012)
** COP19 - 19th UNFCCC Conference of the Parties (11-23 November 2013)
** COP20 - 20th UNFCCC Conference of the Parties (1-12 December 2014)
** COP21 - 21st UNFCCC Conference of the Parties (30 November-12 December 2015)
** COP22 - 22nd UNFCCC Conference of the Parties (7-18 November 2016)
** COP23 - 23rd UNFCCC Conference of the Parties (6-17 November 2017)
** COP24 - 24th UNFCCC Conference of the Parties (2-15 December 2018)
** COP25 - 25th UNFCCC Conference of the Parties (2-13 December 2019)
** COP26 - 26th UNFCCC Conference of the Parties (1-12 November 2021)
** COP27 - 27th UNFCCC Conference of the Parties (6-18 November 2022)
** COP28 - 28th UNFCCC Conference of the Parties (30 November - 13 December 2023), held in the United Arab Emirates
** COP29 - 29th UNFCCC Conference of the Parties (11-22 November 2024), held in Baku
** COP30 - anticipated 2025 UNFCCC Conference of the Parties, to take place in Belém, Brazil.
** COP31 - anticipated 2026 UNFCCC Conference of the Parties
* CORSIA - Carbon Offsetting and Reduction Scheme for International Aviation
* CPA - Carbon Pricing Act (Singapore)
* CPRS - Carbon Pollution Reduction Scheme (Australia)
* CRC - CRC Energy Efficiency Scheme, formerly Carbon Reduction Commitment (UK)
* CREWS - Climate Risk and Early Warning Systems
* CRU - Climatic Research Unit at the University of East Anglia
* CRU TS - Climatic Research Unit Time Series datasets
* CSA - Climate-Smart Agriculture
* CVF - Climate Vulnerable Forum

## D

* DECC - Department of Energy and Climate Change (UK), now Department for Business, Energy and Industrial Strategy

## E

* ECI - Environmental Change Institute at the University of Oxford
* EPR - Extended Producer Responsibility
* ETC - Energy Transition Council
* ETS - Emissions Trading System
* ETSWAP - Emissions Trading Scheme Workflow Automation Project operated by the UK's Environment Agency

## F

* FAR - First Assessment Report of the IPCC (1990)
* F-gas - Fluorinated gas
* FICER - Fund for Innovative Climate and Energy Research
* FOLU - Forestry and other land use
* FFF - Fridays for Future

## G

* GCF - Green Climate Fund
* GCoM - Global Covenant of Mayors for Climate and Energy
* GHG - Greenhouse gas
* GST - Global Stocktake
* GtC - Gigatonnes of carbon
* GWP - Global warming potential

## H

* HadCM3 - Hadley Centre Coupled Model, version 3
* HadGEM - Hadley Centre Global Environmental Model
** HadGEM1 -
* HCFC - Hydrochlorofluorocarbon
* HFC - Hydrofluorocarbon

## I

* ICLEI - International Council for Local Environmental Initiatives
* IKI - International Climate Initiative (German: Internationalen Klimaschutzinitiative), a German Federal Government initiative
* IPCC - Intergovernmental Panel on Climate Change
** IPCC-50 - the IPCC's 50th session (2019)
* IPCC-NGGIP - IPCC National Greenhouse Gas Inventories Programme
* ISO 1406x Series - ISO standards for climate change mitigation
* ISO 14090:2019 - ISO standard for adaptation to climate change — Principles, requirements and guidelines
* ISO/DIS 14091 - Adaptation to climate change — Guidelines on vulnerability, impacts and risk assessment
* ISO/TS 14092 - Adaptation to climate change — Requirements and guidance on adaptation planning for local governments and communities

## J

* JI - Joint Implementation

## K

* KLD - Ministry of Climate and Environment (Klima- og miljødepartementet), Norway

## L

* LCDI - Low Carbon Development Indonesia
* LDCF - Least Developed Countries Fund
* LECBP - Low Emission Capacity Building Programme
* LEDS - Low-Emission Development Strategies
* LSCE - Laboratoire des sciences du climat et de l'environnement, Gif-sur-Yvette, France
* LULUCF - Land use, land-use change, and forestry

## M

* MCC - Mercator Research Institute on Global Commons and Climate Change, Berlin
* MPGCA - Marrakech Partnership for Global Climate Action
* MoCC - Ministry of Climate Change (Pakistan)
* MoEFCC - Ministry of Environment, Forest and Climate Change (India)
* MOP1 - 1st Meeting of the Parties to the Kyoto Protocol (28 November - 9 December 2005)
* MOP2 - 2nd Meeting of the Parties to the Kyoto Protocol (6-17 November 2006)
* MOP3 - 3rd Meeting of the Parties to the Kyoto Protocol (3-15 December 2007)
* MOP4 - 4th Meeting of the Parties to the Kyoto Protocol (1-12 December 2008)
* MOP5 - 5th Meeting of the Parties to the Kyoto Protocol (7-18 December 2009)
* MRF - Materials Recovery Facility
* MWE/CCD - Climate Change Department of the Ministry of Water and Environment (Uganda)

## N

* NAMA - Nationally Appropriate Mitigation Actions
* NAPA - National Adaptation Programme of Action
* NAZCA - Non-state Actor Zone for Climate Action
* NC - National Communication (under the Paris Agreement)
* NCQG - New Collective Quantified Goal: see 2024 United Nations Climate Change Conference
* NDC - Nationally Determined Contributions
* NECIA - Northeast Climate Impacts Assessment (USA)
* N$_2$O - Nitrous Oxide
* NRSP - National Reports Submission Portal

## O

* O$_3$ - Ozone

## P

* PATPA - Partnership on Transparency in the Paris Agreement
* P-CAN - Place-based Climate Action Networks, a UK-based partnership between university researchers and the public, private and third sectors in tackling climate change, aiming to accelerate and sustain the transition to a low-carbon, climate-resilient society through the creation of local climate commissions.
* PCD - Petersberg Climate Dialogue
** PCD X - Petersberg Climate Dialogue 10 (13-14 May 2019)
** PCD XI - Petersberg Climate Dialogue (27-28 April 2020)
* PFC - Perfluorocarbon
* PIK - Potsdam Institute for Climate Impact Research (German: Potsdam-Institut für Klimafolgenforschung)

## S

* SAR - Second Assessment Report of the IPCC (1995)
* SB 52 - Fifty-second session of the Subsidiary Body for Scientific and Technological Advice (SBSTA 52) and the fifty-second session of the Subsidiary Body for Implementation (SBI 52) (postponed to 2021)
* SB 56 - the Bonn Climate Change Conference, 56th session of the subsidiary bodies, held on 6 to 16 June 2022
* SBI - Subsidiary Body for Implementation
** SBI 46 - Forth-sixth session of the Subsidiary Body for Implementation (8-18 May 2017)
** SBI 47 - Forty-seventh session of the Subsidiary Body for Implementation (6-15 November 2017)
** SBI 52 - Fifty-second session of the Subsidiary Body for Implementation (postponed to 2021)
* SBSTA - Subsidiary Body for Scientific and Technological Advice
* SBTi - Science Based Targets initiative
* SCCF - Special Climate Change Fund
* SDA - Sectoral Decarbonization Approach
* SDGs - Sustainable Development Goals
* SECR - Streamlined Energy and Carbon Reporting framework (UK)
* SF$_6$ - Sulfur hexafluoride
* SRCCL - Special Report on Climate Change and Land of the IPCC
* SRES - Special Report on Emissions Scenarios of the IPCC
* SR15 - IPCC's Special Report on Global Warming of 1.5 °C
* SSP - Shared Socioeconomic Pathway

## T

* TACC - Territorial Approach to Climate Change
* TAR - Third Assessment Report of the IPCC (2001)
* TCCC - Tarawa Climate Change Conference
* TCFD - Task Force on Climate-related Financial Disclosures
* tCO2 - Tonnes of carbon dioxide equivalent
* TD - Talanoa Dialogue
* TFI - Task Force on National Greenhouse Gas Inventories

## U

* UKCIP - Multi-disciplinary team formerly known as the UK Climate Impacts Programme, based at the Environmental Change Institute at the University of Oxford
* UKCP - UK Climate Projections
** UKCP09 - UK Climate Projections 2009
** UKCP18 - UK Climate Projections 2018
* UKHACC - UK Health Alliance on Climate Change
* UN CC:Learn - One UN Climate Change Learning Partnership
* UNEP - United Nations Environment Programme
* UNFCCC - United Nations Framework Convention on Climate Change
* USCAP - U.S. Climate Action Partnership

## W

* WCAS - World Climate Action Summit, held on 1–2 December 2023, during the COP28 United Nations Climate Change Conference.
* WCI - Western Climate Initiative
* WCRP - World Climate Research Programme
* WGI - Working Group I of the IPCC, which assesses the physical science of climate change
* WGII - Working Group II of the IPCC, which assesses the vulnerability of socio-economic and natural systems to climate change
* WGIII - Working Group III of the IPCC, which "focuses on climate change mitigation, assessing methods for reducing greenhouse gas emissions, and removing greenhouse gases from the atmosphere".
* WIM - Warsaw International Mechanism for Loss and Damage associated with Climate Change Impacts
* WMO - World Meteorological Organization
* WRI - World Resources Institute

## Numerical

* 4CMR - Former Cambridge Centre for Climate Change Mitigation Research