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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 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 Fifth Assessment Report was finalized in 2014. As had been the case in the past, the outline of the AR5 was developed through a scoping process which involved climate change experts from all relevant disciplines and users of IPCC reports; in particular representatives from governments. Governments and organizations involved in the Fourth Report were asked to submit comments and observations in writing with the submissions analysed by the panel.〔(【引用サイトリンク】title=IPCC website )〕 The report was delivered in stages, starting with Working Group I's report on the physical science basis, based on 9,200 peer-reviewed studies.〔 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".〔("Climate change report: reactions to the final instalment of the IPCC analysis" ) in ''The Guardian''〕 The Synthesis Report was released on 2 November 2014. It is anticipated that the Fifth Assessment Report will pave the way for a global, legally binding treaty on reducing carbon emissions at the UN Climate Change Conference in Paris during late 2015. ==Current status== The Fifth Assessment Report (AR5) consists of three Working Group (WG) Reports and a Synthesis Report. The first Working Group Report was published in 2013 and the rest were completed in 2014. *WG I: The Physical Science Basis – 30 September 2013, Summary for Policymakers published 27 September 2013.〔(【引用サイトリンク】 Working Group I Contribution to the IPCC Fifth Assessment Report Climate Change 2013: The Physical Science Basis Summary for Policymakers )〕 *WG II: Impacts, Adaptation and Vulnerability – 31 March 2014 *WG III: Mitigation of Climate Change – 11 April 2014 *AR5 Synthesis Report (SYR) – 2 November 2014 The AR5 provides an update of knowledge on the scientific, technical and socio-economic aspects of climate change. More than 800 authors, selected from around 3,000 nominations, were involved in writing the report. Lead authors' meetings and a number of workshops and expert meetings, in support of the assessment process, were held. A schedule of AR5 related meetings, review periods, and other important dates was published.〔(【引用サイトリンク】title=Activities: Fifth Assessment report )〕 On 14 December 2012, drafts of the Working Group 1 (WG1) report were leaked and posted on the Internet. The release of the summary for policymakers occurred on 27 September 2013.〔 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. "Vested interests are paying for the discrediting of scientists all the time. We need to be ready for that," he said. Marking the finalization of the ''Physical Science Basis'' UN Secretary General Ban Ki-moon addressed the IPCC at Stockholm on 27 September 2013. He stated that "the heat is on. We must act". 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." 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." 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IPCC Fifth Assessment Report」の詳細全文を読む スポンサード リンク
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