Most of us are fully aware that we have to get CO2 down even if we can control temperature by SRM . Its all a matter of possible timescales.
for instance my website http://www.naturaljointmobility.info/globalwarming.htm The urgency and severity of the problem is rapidly climbing up the popular and political agenda. To deal with this we have to do three things and we have to start all three of them now. These are: 1.) Change from our carbon and fossil fuel based worldwide energy systems to totally carbon free energy. This cannot be done instantaneously and in the light of the expansion and industrialisation of much of the developing world, some time this century is probably the only realistic timescale. 2.) Because of the inevitable delay in achieving 1, we must develop the technology to remove CO2 from the atmosphere in the very large quantities that we are emitting it, in order to keep the atmospheric concentration under some sort of control. (eg ocean acidity) This carbon capture and sequestration (CCS) technology does not presently exist. 3.) Because of the inevitable delays in 1 and 2 we must use geoengineering SRM techniques to keep worldwide temperature and sea level to approximately the present levels. This web site is only about number 3: SRM Geoengineering. This is not meant to be an alternative to number 1 and number 2. We have absolutely no choice if we are to solve the problem of global warming. We must put massive worldwide effort into all three and the first to produce results will be geoengineering. john gorman ----- Original Message ----- From: GRAHAM KNIGHT To: [email protected] ; Geoengineering ; John Davies ; John Gorman ; Lloyd Helferty ; Albert Kallio ; [email protected] ; Emily ; [email protected] ; Mark Lynas ; [email protected] Sent: Friday, March 25, 2011 9:06 AM Subject: Re: Arctic melt down Dear All, I'm glad to see that some commonsense is being shown even if limited to a tiny fraction of the human population. But none of you, it appears, has yet mentioned seawater acidity. Any geoengineering which reduces the heating from the sun must be matched by engineering to prevent the oceans soon having so much carbonic acid that all ocean life is eradicated! Like global warming, changes to sea life is already measurable. Graham Knight Hi Brian, When the hazard is as great as it appears to be - threatening the lives of the entire human race - you have to take the worst case scenario of weather conditions, and do your best to tackle that. This gives you a tight timescale. Two summers like 2007, when there was a sudden major retreat of the Arctic sea ice to a new record, and the sea ice might never recover. Thus I would argue that we should attempt to be ready for full-scale deployment of several mutually supportive techniques in two years, ready for spring 2013. The methane level is already high in the Arctic, and there appears to be enough methane clathrate in a critical state under the Siberian sea to trigger a positive feedback loop [1]. So any delay increases the chances of an uncontrollable release of methane. If we do nothing, then there is nothing to stop the Arctic warming up several degrees more and methane discharge is almost inevitable. The stark conclusion is that the future of the human race hangs on successful geoengineering. So I argue that the sooner we deploy geoengineering the better - and two years is the earliest conceivable time to be ready. Cheers, John -- 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.
