Alan, the assertion that ;’if your first message is that mitigation is not enough, of course your conclusion is that we need SRM.’ is not necessarily true. For example, the CCC in the UK concluded mitigation was not enough for us to reach net zero by 2050, and concluded massive carbon removal, and no SRM. (the amount of carbon removal they concluded was, of course, questionable, but they never concluded SRM) Similarly, almost every scenario in the IPCC 1.5 report required some degree of carbon rewmoval, be it through ‘nature based solutions’ or BECCS. ‘Enough’ in common discourse since the 1.5 report generally refers to reaching no more than 1.5 degrees, and to do that, mitigation alone is not enough. Bear in mind the C2G works on both increasing governance and discussions of GGR as well as SRM, and in this context, it is more likely this betrays a genuine belief we need some sort of GGR than any belief we need SRM.
From: Alan Robock Sent: 12 September 2019 19:39 To: [email protected]; geoengineering Subject: Re: [geo] youth-infographic.pdf But this is all based on a false premise. It says: To stop global warming, we must stop burning fossil fuels, as soon as possible. But scientists tell us that’s not enough. This is very misleading. Enough for what? Certainly if we stop burning fossil fuels, global warming will not stop immediately, but it will stop soon. And Mark Jacobson has plans for shifting the whole world to Sun and wind now, which will be enough to avoid the worst impacts of global warming. So some scientists say this, particularly those who are positively biased to SRM implementation, and others do not. If your first message is that mitigation is not enough, of course your conclusion is that we need SRM. Alan Alan Robock, Distinguished Professor Associate Editor, Reviews of Geophysics Department of Environmental Sciences Phone: +1-848-932-5751 Rutgers University E-mail: [email protected] 14 College Farm Road http://people.envsci.rutgers.edu/robock/ New Brunswick, NJ 08901-8551 USA ☮ http://twitter.com/AlanRobock On Thu, 9/12/19 2:28 PM, Andrew Lockley wrote: This is potentially a very good resource for people to use in education for pre-university children -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/geoengineering/CAJ3C-07Oxr3TcKFHo6WGbcRuo8eK-u9f3HcRjreH5Ki30zVp8A%40mail.gmail.com. -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/geoengineering/d4b42852-c645-4d0c-ea7c-59804fccbc1f%40envsci.rutgers.edu. -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/geoengineering/5d7a9a0c.1c69fb81.d4b6d.d944SMTPIN_ADDED_MISSING%40gmr-mx.google.com.
