Zero emission targets as long-term global goals for climate protection

11327 14 35052 2 78167 document 35052 Zero emission targets as long-term global goals.pdf application/pdf a5daf8816e76d33afe3b6476b2adacd5 MD5 1241690 2016-02-29 08:53:11 https://pure.iiasa.ac.at/id/eprint/11327/1/Zero%20emission%20targets%20as%20long-term%20global%20goals.pdf 11327 1 1 application/pdf text en public cc_by

Zero emission targets as long-term global goals.pdf

published 35053 2 78171 document 35053 lightbox.jpg image/png 70b490e61ff7047ef4b5f2ef8bc8d057 MD5 13055 2016-02-29 08:53:42 https://pure.iiasa.ac.at/id/eprint/11327/2/lightbox.jpg 11327 2 2 image/png other Thumbnails conversion from text to thumbnail_lightbox en public

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http://eprints.org/relation/isVersionOf https://pure.iiasa.ac.at/id/document/35052 http://eprints.org/relation/isVolatileVersionOf https://pure.iiasa.ac.at/id/document/35052 http://eprints.org/relation/isIndexCodesVersionOf https://pure.iiasa.ac.at/id/document/35052 archive 351 disk0/00/01/13/27 2016-01-15 08:52:49 2021-08-27 17:24:54 2016-01-15 08:52:49 article show Rogelj J. 8630 0000-0003-2056-9061 Schaeffer M. Meinshausen M. Knutti R. Alcamo J. AL0441 Riahi K. 1696 0000-0001-7193-3498 Hare W. Zero emission targets as long-term global goals for climate protection pub iis_ene prog_ene climate policy; climate stabilization; UNFCC; greenhouse gases; carbon dioxide; global goal; climate change Recently, assessments have robustly linked stabilization of global-mean temperature rise to the necessity of limiting the total amount of emitted carbon-dioxide (CO2). Halting global warming thus requires virtually zero annual CO2 emissions at some point. Policymakers have now incorporated this concept in the negotiating text for a new global climate agreement, but confusion remains about concepts like carbon neutrality, climate neutrality, full decarbonization, and net zero carbon or net zero greenhouse gas (GHG) emissions. Here we clarify these concepts, discuss their appropriateness to serve as a long-term global benchmark for achieving temperature targets, and provide a detailed quantification. We find that with current pledges and for a likely (>66%) chance of staying below 2 degrees C, the scenario literature suggest net zero CO2 emissions between 2060 and 2070, with net negative CO2 emissions thereafter. Because of residual non-CO2 emissions, net zero is always reached later for total GHG emissions than for CO2. Net zero emissions targets are a useful focal point for policy, linking a global temperature target and socio-economic pathways to a necessary long-term limit on cumulative CO2 emissions. 2015-10 published Institute of Physics Publishing (IOP) 10.1088/1748-9326/10/10/105007 XJ-15-272 [doi:10.1088/1748-9326/10/10/105007] 254 1685 250 public Environmental Research Letters 10 10 no.105007 105007 TRUE 1748-9326 FALSE info:eu-repo/semantics/article