Anyone for GE? - Greg Environmental Research Letters<http://iopscience.iop.org/1748-9326/> Volume 8 <http://iopscience.iop.org/1748-9326/8> Number 1 <http://iopscience.iop.org/1748-9326/8/1>
Steven J Davis et al 2013 Environ. Res. Lett. 8 011001 doi:10.1088/1748-9326/8/1/011001<http://dx.doi.org/10.1088/1748-9326/8/1/011001> Rethinking wedges OPEN ACCESS Steven J Davis1,2, Long Cao2,3, Ken Caldeira2 and Martin I Hoffert4 Show affiliations<http://iopscience.iop.org/1748-9326/8/1/011001?v_showaffiliations=yes> [email protected] <mailto:[email protected]> [email protected] <mailto:[email protected]> [email protected] <mailto:[email protected]> [email protected] <mailto:[email protected]> 1 Department of Earth System Science, University of California, Irvine, Irvine, CA 92697, USA 2 Department of Global Ecology, Carnegie Institution of Washington, Stanford, CA 94305, USA 3 Department of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang Province, 310027, People's Republic of China 4 Department of Physics, New York University, New York, NY 10003, USA Tag this article<https://ticket.iop.org/login?return=http%3A%2F%2Fiopscience.iop.org%2FtagInputWindow%3FarticleId%3D1748-9326%2F8%2F1%2F011001%26returnUrl%3Dhttp%253A%252F%252Fiopscience.iop.org%252F1748-9326%252F8%252F1%252F011001%26fromUrl%3Dhttp%253A%252F%252Fiopscience.iop.org%252F1748-9326%252F8%252F1%252F011001> Full text PDF (586 KB)<http://iopscience.iop.org/1748-9326/8/1/011001/pdf/1748-9326_8_1_011001.pdf> Abstract Stabilizing CO2 emissions at current levels for fifty years is not consistent with either an atmospheric CO2 concentration below 500 ppm or global temperature increases below 2 °C. Accepting these targets, solving the climate problem requires that emissions peak and decline in the next few decades, and ultimately fall to near zero. Phasing out emissions over 50 years could be achieved by deploying on the order of 19 'wedges', each of which ramps up linearly over a period of 50 years to ultimately avoid 1 GtC y−1 of CO2 emissions. But this level of mitigation will require affordable carbon-free energy systems to be deployed at the scale of tens of terawatts. Any hope for such fundamental and disruptive transformation of the global energy system depends upon coordinated efforts to innovate, plan, and deploy new transportation and energy systems that can provide affordable energy at this scale without emitting CO2 to the atmosphere. -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en.
