John: In part I would agree. I certainly agree on the two needs you identify below.
As I said today in a related discussion: saying that geoengineering can answer both problems leaves a wrong or incomplete impression for most lay readers (not this list). I think readers of this list would be better off to drop the term geoengineering and only talk instead of CDR (Carbon Dioxide Removal) and SRM (Solar Radiation Management). These are so different, that to use one term to describe both can't be healthy. SRM can only do one of your two tasks. CDR can do both albeit possibly (not certainly if we got serious) more slowly. I am NOT saying that CDR can manage radiation - but it (and especially Biochar) can get us to 350 ppm and that level (or maybe a little less, even after we stop using fossil fuels) can reverse arctic warming. I fear that SRM has so many unknowns that we had better start immediately using those CDR techniques that already have public approval. I have no objection to planning for SRM. SRM alone would be lunacy. Ron ----- Original Message ----- From: "John Nissen" <j...@cloudworld.co.uk> To: rongretlar...@comcast.net Cc: williamcgbu...@gmail.com, "Olivier Boucher" <olivier.bouc...@metoffice.gov.uk>, "geoengineering" <geoengineering@googlegroups.com>, "Jeff Ridley" <jeff.rid...@metoffice.gov.uk>, "P. Wadhams" <p...@cam.ac.uk> Sent: Thursday, July 29, 2010 4:21:51 PM Subject: Re: [geo] New Met Resource on Geoengineering Hi Ron, There are two requirements that never seem to get mentioned, in official studies: 1. The need to bring down CO2 level in the atmosphere below 350 ppm, to avoid further ocean acidification, and potential catastrophic breakdown of the marine food chain; 2. The need to cool the Arctic to prevent inexorable melting of permafrost with catastrophic methane release and inexorable (or sudden) disintegration of Greenland ice sheet with catastrophic sea level rise. Both these require geoengineering as part of the solution, since emissions reductions alone cannot solve these problems on the necessary timescale. I challenge anybody from the Met Office to dispute this. BTW, scientists such as Hansen want (1) for reasons of global warming, and may put ocean acidification as a secondary consideration. Cheers, John --- rongretlar...@comcast.net wrote: Wil and list: Thanks for the lead. I still don't understand how Biochar can be left out of discussions by groups like the Met office and Mr..Boucher There are now 29 separate regional Biochar groups (doubling approximately every year). Does anyone know of any other geoengineering technology that has even one regional support group? (There are some probably for forestry - but emphasizing CDR?) Popular support is going to be critical to get to 350 ppm - and Biochar has it. See http://www.biochar-international.org/network/communities Ron ----- Original Message ----- From: "Wil Burns" <williamcgbu...@gmail.com> To: "Climate Intervention (Geoengineering)" <climateintervent...@googlegroups.com> , "geoengineering" <geoengineering@googlegroups.com> Sent: Tuesday, July 27, 2010 9:25:13 AM Subject: [geo] New Met Resource on Geoengineering FYI, the UK's Met office has posted a new resource on geoengineering, including a five minute video by Olivier Boucher: http://www.metoffice.gov.uk/climatechange/science/explained/geoengineering.html . There's nothing earth shattering on this page, but it does outline the Met's position on geo. wil -- Dr. Wil Burns, Editor in Chief Journal of International Wildlife Law & Policy 1702 Arlington Blvd. El Cerrito, CA 94530 USA Ph: 650.281.9126 Fax: 510.779.5361 ji...@internationalwildlifelaw.org http://www.tandf.co.uk/journals/titles/13880292.asp SSRN site: http://ssrn.com/author=240348 Skype ID: Wil.Burns -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to geoengineering@googlegroups.com . To unsubscribe from this group, send email to geoengineering+unsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en . -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to geoengineering@googlegroups.com . To unsubscribe from this group, send email to geoengineering+unsubscr...@googlegroups.com . For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en . -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to geoengineer...@googlegroups.com. To unsubscribe from this group, send email to geoengineering+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en.
