http://science.sciencemag.org/content/355/6331/1269
A roadmap for rapid decarbonization 1. Johan Rockström1 <http://science.sciencemag.org/content/355/6331/1269#aff-1>, 2. Owen Gaffney1 <http://science.sciencemag.org/content/355/6331/1269#aff-1>,2 <http://science.sciencemag.org/content/355/6331/1269#aff-2>, 3. Joeri Rogelj3 <http://science.sciencemag.org/content/355/6331/1269#aff-3>,4 <http://science.sciencemag.org/content/355/6331/1269#aff-4>, 4. Malte Meinshausen5 <http://science.sciencemag.org/content/355/6331/1269#aff-5>,6 <http://science.sciencemag.org/content/355/6331/1269#aff-6>, 5. Nebojsa Nakicenovic4 <http://science.sciencemag.org/content/355/6331/1269#aff-4>, 6. Hans Joachim Schellnhuber1 <http://science.sciencemag.org/content/355/6331/1269#aff-1>,5 <http://science.sciencemag.org/content/355/6331/1269#aff-5> *+* See all authors and affiliations Science 24 Mar 2017: Vol. 355, Issue 6331, pp. 1269-1271 DOI: 10.1126/science.aah3443 - Article <http://science.sciencemag.org/content/355/6331/1269> - - Figures & Data <http://science.sciencemag.org/content/355/6331/1269/tab-figures-data> - - Info & Metrics <http://science.sciencemag.org/content/355/6331/1269/tab-article-info> - - eLetters <http://science.sciencemag.org/content/355/6331/1269/tab-e-letters> - - PDF <http://science.sciencemag.org/content/355/6331/1269/tab-pdf> You are currently viewing the summary. View Full Text <http://science.sciencemag.org/content/355/6331/1269.full> Summary Although the Paris Agreement's goals (*1*) are aligned with science (*2*) and can, in principle, be technically and economically achieved (*3*), alarming inconsistencies remain between science-based targets and national commitments. Despite progress during the 2016 Marrakech climate negotiations, long-term goals can be trumped by political short-termism. Following the Agreement, which became international law earlier than expected, several countries published mid-century decarbonization strategies, with more due soon. Model-based decarbonization assessments (*4*) and scenarios often struggle to capture transformative change and the dynamics associated with it: disruption, innovation, and nonlinear change in human behavior. For example, in just 2 years, China's coal use swung from 3.7% growth in 2013 to a decline of 3.7% in 2015 (*5*). To harness these dynamics and to calibrate for short-term realpolitik, we propose framing the decarbonization challenge in terms of a global decadal roadmap based on a simple heuristic—a “carbon law”—of halving gross anthropogenic carbon-dioxide (CO2) emissions every decade. Complemented by immediately instigated, scalable carbon removal and efforts to ramp down land-use CO2 emissions, this can lead to net-zero emissions around mid-century, a path necessary to limit warming to well below 2°C. -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
