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DOI	10.1038/s41558-020-0833-x
	Climate economics support for the UN climate targets
	Hänsel M.C.; Drupp M.A.; Johansson D.J.A.; Nesje F.; Azar C.; Freeman M.C.; Groom B.; Sterner T.
发表日期	2020
ISSN	1758-678X
起始页码	781
结束页码	789
卷号	10 期号:8
英文摘要	Under the UN Paris Agreement, countries committed to limiting global warming to well below 2 °C and to actively pursue a 1.5 °C limit. Yet, according to the 2018 Economics Nobel laureate William Nordhaus, these targets are economically suboptimal or unattainable and the world community should aim for 3.5 °C in 2100 instead. Here, we show that the UN climate targets may be optimal even in the Dynamic Integrated Climate–Economy (DICE) integrated assessment model, when appropriately updated. Changes to DICE include more accurate calibration of the carbon cycle and energy balance model, and updated climate damage estimates. To determine economically ‘optimal’ climate policy paths, we use the range of expert views on the ethics of intergenerational welfare. When updates from climate science and economics are considered jointly, we find that around three-quarters (or one-third) of expert views on intergenerational welfare translate into economically optimal climate policy paths that are consistent with the 2 °C (or 1.5 °C) target. © 2020, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	carbon cycle; climate change; environmental economics; environmental policy; global warming; United Nations
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/142160
作者单位	Potsdam Institute for Climate Impact Research, Leibniz Association, Potsdam, Germany; Department of Economics and Center for Earth System Research and Sustainability (CEN), University of Hamburg, Hamburg, Germany; CESifo, Munich, Germany; Division of Physical Resource Theory, Department of Space, Earth & Environment, Chalmers University of Technology, Gothenburg, Sweden; Department of Economics, Heidelberg University, Heidelberg, Germany; Department of Economics, University of Oslo, Oslo, Norway; York Management School, University of York, York, United Kingdom; Department of Geography and Environment and Grantham Research Institute on Climate Change and the Environment, London School of Economics and Political Science, London, United Kingdom; Dragon Capital Chair in Biodiversity Economics, Department of Economics, University of Exeter, Exeter, United Kingdom; Department of Economics, University of Gothenburg, Gothenburg, Sweden
推荐引用方式 GB/T 7714	Hänsel M.C.,Drupp M.A.,Johansson D.J.A.,et al. Climate economics support for the UN climate targets[J],2020,10(8).
APA	Hänsel M.C..,Drupp M.A..,Johansson D.J.A..,Nesje F..,Azar C..,...&Sterner T..(2020).Climate economics support for the UN climate targets.Nature Climate Change,10(8).
MLA	Hänsel M.C.,et al."Climate economics support for the UN climate targets".Nature Climate Change 10.8(2020).