1.5掳C or 2掳C: a conduit鈥檚 view from the science-policy interface at COP20 in Lima, Peru

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• 作者：Petra Tschakert
• 关键词：Global average warming ; Temperature targets ; UNFCCC Structured Expert Dialogue ; 2013鈥?015 Review ; Uneven geographies
• 刊名：Climate Change Responses
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：2
• 期：1
• 全文大小：1481KB
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• 作者单位：Petra Tschakert (1)
  
  1. Department of Geography and the Earth and Environmental Systems Institute (EESI), Pennsylvania State University, 322 Walker Building, University Park, PA, 16802, USA
  
• 刊物类别：Ecology; Applied Ecology; Landscape Ecology; Plant Ecology; Evolutionary Biology; Fish & Wildlife Bi
• 刊物主题：Ecology; Applied Ecology; Landscape Ecology; Plant Ecology; Evolutionary Biology; Fish & Wildlife Biology & Management;
• 出版者：BioMed Central
• ISSN：2053-7565

文摘

An average global 2掳C warming compared to pre-industrial times is commonly understood as the most important target in climate policy negotiations. It is a temperature target indicative of a fiercely debated threshold between what some consider acceptable warming and warming that implies dangerous anthropogenic interference with the climate system and hence to be avoided. Although this 2掳C target has been officially endorsed as scientifically sound and justified in the Copenhagen Report issued by the 15th Conference of the Parties (COP) of the United Nations Framework Convention on Climate Change (UNFCCC) in 2009, the large majority of countries (over two-thirds) that have signed and ratified the UNFCCC strongly object to this target as the core of the long-term goal of keeping temperatures below a certain danger level. Instead, they promote a 1.5掳C target as a more adequate limit for dangerous interference. At COP16 in Cancun, parties to the convention recognized the need to consider strengthening the long-term global goal in the so-called 2013鈥?015 Review, given improved scientific knowledge, including the possible adoption of the 1.5掳C target. In this perspective piece, I examine the discussions of a structured expert dialogue (SED) between selected Intergovernmental Panel on Climate Change (IPCC) authors, myself included, and parties to the convention to assess the adequacy of the long-term goal. I pay particular attention to the uneven geographies and power differentials that lay behind the ongoing political debate regarding an adequate target for protecting ecosystems, food security, and sustainable development. Keywords Global average warming Temperature targets UNFCCC Structured Expert Dialogue 2013鈥?015 Review Uneven geographies