If some material could be added to the ice as it reforms in the winter, could a layer of ice-crete be formed in startegic places to them slow the melt and physical break-up of the ise the following summer, and use this to build multi-year ice again? Especially in the shallow coastal waters off northern Russia where ice loss is severe and methane hydrates perhaps most unstable and in need of the cooling effect if an ice layer. I realise there are scale challenges but I hope this can be overcome when we think about other things done en masse. A local seaweed or grass might make a good substrate to do some lab tests, and then field trials. If anyone has any constructive thoughts, I am keen to hear back. Many thanks, Emily. Sent from my BlackBerry
-----Original Message----- From: Peter Flynn <peter.fl...@ualberta.ca> Sender: geoengineering@googlegroups.com Date: Mon, 17 Jun 2013 14:56:11 To: <dhawk...@nrdc.org>; <joshuahorton...@gmail.com> Reply-To: pcfl...@ualberta.ca Cc: <geoengineering@googlegroups.com> Subject: RE: [geo] Experiment Currently Taking Place in the Arctic? I remain of the belief that simply creating thicker and more extensive ice by the known and proven technique of pumping or spraying water into cold air in the winter is a cheap, safe (because it can be halted at any time) and already demonstrated process (on both fresh and salt water). If any missed the previous paper on this I am happy to resend. This technique works by increasing the rate of heat transfer: water on top of ice freezes much more quickly than water at the bottom of ice because the ice is both an insulation layer and it prevents convective heat transfer from the water layer to the air. I think this is intuitively safer than atmospheric modification because it can be stopped at once. Peter Flynn Peter Flynn, P. Eng., Ph. D. Emeritus Professor and Poole Chair in Management for Engineers Department of Mechanical Engineering University of Alberta peter.fl...@ualberta.ca cell: 928 451 4455 -----Original Message----- From: geoengineering@googlegroups.com [mailto:geoengineering@googlegroups.com] On Behalf Of Hawkins, Dave Sent: June-16-13 6:34 PM To: <joshuahorton...@gmail.com> Cc: geoengineering@googlegroups.com Subject: Re: [geo] Experiment Currently Taking Place in the Arctic? Sounds like a modeling exercise: "stimulating" should be "simulating," I assume. Typed on tiny keyboard. Caveat lector. On Jun 16, 2013, at 6:39 PM, "Josh Horton" <joshuahorton...@gmail.com<mailto:joshuahorton...@gmail.com>> wrote: Hi everyone, Near the end of a recent, otherwise unremarkable story about geoengineering at RTCC (link below), Piers Forster from Leeds University is quoted as follows: "There is one experiment we're currently undertaking - we're trying to look at rescuing Arctic Ice by stimulating aeroplanes flying from Spitzbergen in Norway - and dump out a lot of Sulphur Dioxide, and we're trying to look at that as a very short term protection against the loss of Arctic Ice." (http://www.rtcc.org/scientists-warn-earth-cooling-proposals-are-no-climat e-silver-bullet/) Does anyone know what he is talking about? Josh Horton joshuahorton...@gmail.com<mailto:joshuahorton...@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 geoengineering+unsubscr...@googlegroups.com<mailto:geoengineering+unsubscr i...@googlegroups.com>. To post to this group, send email to geoengineering@googlegroups.com<mailto:geoengineering@googlegroups.com>. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/groups/opt_out. -- 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 geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/groups/opt_out. -- 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 geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/groups/opt_out. -- 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 geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at http://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/groups/opt_out.
