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Assessing Dangerous Climate Change: Required Reduction of Carbon Emissions to Protect Young People, Future Generations and Nature
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2013 (English)In: PLoS ONE, ISSN 1932-6203, Vol. 8, no 12, e81648- p.Article, review/survey (Refereed) Published
Abstract [en]

We assess climate impacts of global warming using ongoing observations and paleoclimate data. We use Earth's measured energy imbalance, paleoclimate data, and simple representations of the global carbon cycle and temperature to define emission reductions needed to stabilize climate and avoid potentially disastrous impacts on today's young people, future generations, and nature. A cumulative industrial-era limit of similar to 500 GtC fossil fuel emissions and 100 GtC storage in the biosphere and soil would keep climate close to the Holocene range to which humanity and other species are adapted. Cumulative emissions of similar to 1000 GtC, sometimes associated with 2 degrees C global warming, would spur slow feedbacks and eventual warming of 3-4 degrees C with disastrous consequences. Rapid emissions reduction is required to restore Earth's energy balance and avoid ocean heat uptake that would practically guarantee irreversible effects. Continuation of high fossil fuel emissions, given current knowledge of the consequences, would be an act of extraordinary witting intergenerational injustice. Responsible policymaking requires a rising price on carbon emissions that would preclude emissions from most remaining coal and unconventional fossil fuels and phase down emissions from conventional fossil fuels.

Place, publisher, year, edition, pages
2013. Vol. 8, no 12, e81648- p.
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Earth and Related Environmental Sciences Biological Sciences
URN: urn:nbn:se:su:diva-98278DOI: 10.1371/journal.pone.0081648ISI: 000327947800051OAI: diva2:685634


Available from: 2014-01-09 Created: 2014-01-03 Last updated: 2015-08-31Bibliographically approved

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Rockström, Johan
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Stockholm Resilience Centre
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