IPCC Fifth Assessment Report

Fifth Assessment ReportIPCC AR55thAR5Fifth Assessment Report (AR5)Fifth Assessment Reportsfifth reportIPCC report2.0 °C2007
The Fifth Assessment Report (AR5) of the United Nations Intergovernmental Panel on Climate Change (IPCC) is the fifth in a series of such reports.wikipedia
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Intergovernmental Panel on Climate Change

IPCCIntergovernmental Panel on Climate Change (IPCC)International Panel on Climate Change
The Fifth Assessment Report (AR5) of the United Nations Intergovernmental Panel on Climate Change (IPCC) is the fifth in a series of such reports.
The IPCC's Fifth Assessment Report was a critical scientific input into the UNFCCC's Paris Agreement in 2015.

Scientific consensus on climate change

scientific opinion on climate changescientific consensusscientific consensus on global warming
The IPCC was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) to assess scientific, technical and socio-economic information concerning climate change, its potential effects and options for adaptation and mitigation. The AR5 provides an update of knowledge on the scientific, technical and socio-economic aspects of climate change.

Global warming

climate changeglobal climate changeanthropogenic climate change
The IPCC was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) to assess scientific, technical and socio-economic information concerning climate change, its potential effects and options for adaptation and mitigation. The AR5 provides an update of knowledge on the scientific, technical and socio-economic aspects of climate change.
The Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report concluded, "It is that human influence has been the dominant cause of the observed warming since the mid-20th century."

IPCC Fourth Assessment Report

Fourth Assessment ReportAR4Fourth
Governments and organizations involved in the Fourth Report were asked to submit comments and observations in writing with the submissions analysed by the panel.
It supersedes the Third Assessment Report (2001), and is superseded by the Fifth Assessment Report.

Arctic sea ice decline

Arctic shrinkageArctic sea iceDecline of sea ice
The IPCC Fifth Assessment Report concluded, with high confidence, that sea ice will continue to decrease in extent, and that there is robust evidence for the downward trend in Arctic summer sea ice extent since 1979.

Representative Concentration Pathway

RCPRepresentative Concentration Pathwaysconcentration pathway
Most of the CMIP5 and Earth System Model (ESM) simulations for AR5 WRI were performed with prescribed concentrations reaching 421 ppm (RCP2.6), 538 ppm (RCP4.5), 670 ppm (RCP6.0), and 936 ppm (RCP 8.5) by the year 2100. Instead of the scenarios from the Special Report on Emissions Scenarios the models are performing simulations for various Representative Concentration Pathways.
A Representative Concentration Pathway (RCP) is a greenhouse gas concentration (not emissions) trajectory adopted by the IPCC for its fifth Assessment Report (AR5) in 2014.

2015 United Nations Climate Change Conference

COP21COP 21COP21 climate summit
The Synthesis Report was released on 2 November 2014, in time to pave the way for negotiations on reducing carbon emissions at the UN Climate Change Conference in Paris during late 2015.

Coupled Model Intercomparison Project

CMIP5CMIPCMIP6
AR5 relies on the Coupled Model Intercomparison Project Phase 5 (CMIP5), an international effort among the climate modeling community to coordinate climate change experiments.
The IPCC Fifth Assessment Report summarizes information of CMIP5 experiments, while the CMIP5 experimental protocol was endorsed by the 12th Session of the WCRP Working Group on Coupled Modelling (WGCM).

General circulation model

global climate modelglobal climate modelsclimate model
AR5 relies on the Coupled Model Intercomparison Project Phase 5 (CMIP5), an international effort among the climate modeling community to coordinate climate change experiments.
The IPCC's Fifth Assessment Report asserted "very high confidence that models reproduce the general features of the global-scale annual mean surface temperature increase over the historical period".

Special Report on Emissions Scenarios

SRESEmissions Scenariosemissions pathways
Instead of the scenarios from the Special Report on Emissions Scenarios the models are performing simulations for various Representative Concentration Pathways.
In IPCC Fifth Assessment Report released in 2014, SRES projections were superseded by Representative Concentration Pathways (RCPs) models.

World Meteorological Organization

WMOWorld Meteorological OrganisationESCAP/WMO Typhoon Committee
The IPCC was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) to assess scientific, technical and socio-economic information concerning climate change, its potential effects and options for adaptation and mitigation.

United Nations Environment Programme

UNEPUnited Nations Environment ProgramUnited Nations Environmental Programme
The IPCC was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) to assess scientific, technical and socio-economic information concerning climate change, its potential effects and options for adaptation and mitigation.

Socioeconomics

socioeconomicsocio-economicsocio-economic development
The IPCC was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) to assess scientific, technical and socio-economic information concerning climate change, its potential effects and options for adaptation and mitigation.

Policy

policiespolicymakerspolicymaker
The summaries for policy makers were released on 27 September 2013 for the first report, on 31 March 2014 for the second report entitled "Impacts, Adaptation, and Vulnerability", and on 14 April 2014 for the third report entitled "Mitigation of Climate Change".

Economics of global warming

economics of climate changeeconomic developmenteconomics
The AR5 provides an update of knowledge on the scientific, technical and socio-economic aspects of climate change.

Climate change denial

climate change denierclimate change deniersclimate change sceptic
Halldór Thorgeirsson, a UN official, warned that, because big companies are known to fund the undermining of climate science, scientists should be prepared for an increase in negative publicity at the time.

Ban Ki-moon

Ban Ki MoonForeign Minister BanBan
Marking the finalization of the Physical Science Basis UN Secretary General Ban Ki-moon addressed the IPCC at Stockholm on 27 September 2013.

World Resources Institute

World Resource InstituteWRIWorld Resources Institute (WRI)
Jennifer Morgan, from the World Resources Institute, said "Hopefully the IPCC will inspire leadership, from the Mom to the business leader, to the mayor to the head of state."

John Kerry

KerryJohn F. KerryJohn Forbes Kerry
US Secretary of State John Kerry responded to the report saying "This is yet another wakeup call: those who deny the science or choose excuses over action are playing with fire."

Meteorology

meteorologicalmeteorologistmeteorologists
On 23 June 2010 the IPCC announced the release of the final list of selected coordinating lead authors, comprising 831 experts who were drawn from fields including meteorology, physics, oceanography, statistics, engineering, ecology, social sciences and economics.

Cambridge University Press

CambridgeCUPUniversity Press
The full, edited report was released online in January 2014 and published in physical form by Cambridge University Press later in the year.

Antarctic ice sheet

Antarctic ice capAntarcticAntarctica