I'd suggest wind pumps as used on the prairie to lift groundwater. Just set them up on the windy, seasonal ice sheet, drill a hole, and pump away. They'd have floats so after summer-melt out they could be rounded up by ship, hopefully sail-powered, or they could be permanently anchored to the seafloor. Net carbon/climate cost/benefit? Then there is high altitude wind: tether HAW generators to sea ice or sea floor. Use the electricity to pump seawater and/or run a pipe partway up the tether and spray seawater, making snow/aerosol for albedo effects +- snow/water for ice thickening. Better check with the seals and polar bears for preferred ice thickness. Also, biofouling of pipes, pumps, and nozzles could be a showstopper. Anyway, perhaps we should inform PCAST of this new "adaptation strategy" before their next definitive report ;-) -Greg ________________________________________ From: geoengineering@googlegroups.com [geoengineering@googlegroups.com] on behalf of Hawkins, Dave [dhawk...@nrdc.org] Sent: Monday, June 17, 2013 2:17 PM To: Peter Flynn; joshuahorton...@gmail.com Cc: geoengineering@googlegroups.com Subject: RE: [geo] Experiment Currently Taking Place in the Arctic?
What is your energy source for this pumping and spraying? -----Original Message----- From: Peter Flynn [mailto:peter.fl...@ualberta.ca] Sent: Monday, June 17, 2013 4:56 PM To: Hawkins, Dave; joshuahorton...@gmail.com 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+unsubs geoengineering+cr 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.
