List of abbreviations relating to climate change

This is a list of abbreviations relating to climate change causation, adaptation and mitigation.

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 CO2 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)
 * CCl2F2 - Dichlorodifluoromethane (greenhouse gas)
 * CCLS - Cambridge Climate Lecture Series
 * CCRA - Climate Change Risk Assessment
 * CCS - Carbon Capture and Storage
 * 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)
 * CF4 - Carbon tetrafluoride or tetrafluoromethane (greenhouse gas)
 * CGE - Consultative Group of Experts
 * CHClF2 - Chlorodifluoromethane (greenhouse gas)
 * CH4 - 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
 * CO2 - Carbon dioxide
 * CO2-e - Carbon dioxide equivalent, also CO2-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, scheduled for November 2023 in the United Arab Emirates
 * COP29 - 29th UNFCCC Conference of the Parties, 2024, proposed venue is Australia
 * COP30 - anticipated 2025 UNFCCC Conference of the Parties, to take place in Belém, Brazil.
 * 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 (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)
 * NDC - Nationally Determined Contributions
 * NECIA - Northeast Climate Impacts Assessment (USA)
 * N2O - Nitrous Oxide
 * NRSP - National Reports Submission Portal

O

 * O3 - 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 (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)
 * SF6 - 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