As per my recent paper, it is promising to pump seawater through the ice (approx 0C), so it freezes in the Arctic winter air (approx -40C). This isn't a new idea, and I think my paper might contain references to earlier work (perhaps Flynn?).
https://www.sciencedirect.com/science/article/pii/S1674927820300940 Power could indeed be supplied by nuclear power, but wind turbines on barges may be more practical, in terms of scale and redundancy. Alternatively, ice breakers can create open water, which quickly freezes. The jumble of broken ice can also possibly catch snow and resist melting. This idea isn't in the paper, but was discussed on the list (perhaps Veli?) On Mon, 8 Feb 2021, 23:37 Adrian Hindes, <[email protected]> wrote: > Ah of course, the straightforward thermodynamics of it aren't favourable > to direct cooling through refrigeration. > > I suppose the only way to make it work would be to transfer the heat to > outer space or deep underground. I don't know too much about how heat > exchangers or thermal transport works, but having a read of the basal > freezing section of your paper, Andrew, I can't imagine anything > thermosyphon related would be appropriate for the Arctic. > > Aside from glass microspheres then, maybe only marine cloud brightening > remains as an ostensibly viable Arctic refreeze technology? It'll be > interesting to see what they discuss in the Climate Emergency Summit talk. > -A > On Sunday, 7 February 2021 at 7:43:10 am UTC+11 Andrew Lockley wrote: > >> I'm unclear on the proposed mechanism, but any artificial refrigeration >> simply moves heat around. There is obviously an energy penalty for doing >> this - and for generating the electricity, in the first place. In short, >> all the additional thermal energy from the nuclear power plant will >> ultimately end up as waste heat, in the system you're trying to cool. You >> can't make a sealed room colder by locking a generator and refrigerator in >> it - even if that room is the size of a planet. Only by using energy to >> Accelerate hear transfer to space can anything be achieved. Pumping water >> through the ice can do this, as can freezing glacier bases to preserve them >> and their ice-albedo feedback. . >> >> I address some of these issues in my recent paper. >> >> https://www.sciencedirect.com/science/article/pii/S1674927820300940 >> >> On Sat, 6 Feb 2021, 07:54 Adrian Hindes, <[email protected]> wrote: >> >>> @Oliver although that's quite a few nuclear power plants, that's >>> actually not so far out of the realm of possibility. >>> >>> On Friday, 5 February 2021 at 11:48:12 am UTC+11 Oliver Wingenter wrote: >>> >>>> It would take 20 nuclear power plants running >>>> conventional refrigeration to cool the Arctic Ocean.and refreeze it. >>>> >>>> >>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> >>>> Virus-free. >>>> www.avast.com >>>> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> >>>> <#m_9066338109552543415_m_-5085895541088029739_m_-5856287996666497104_m_-2870835931810201667_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >>>> >>>> On Thu, Feb 4, 2021 at 3:10 PM Andrew Lockley <[email protected]> >>>> wrote: >>>> >>>>> >>>>> https://climateemergencysummit.org/the-cooling-conundrum-event-profile/ >>>>> >>>>> THE COOLING CONUNDRUM >>>>> REVERSING CLIMATE CHANGE TO REFREEZE THE ARCTIC >>>>> With rapidly rising global temperatures, the harm to people and nature >>>>> is already too great. Signs that we are on the brink of triggering runaway >>>>> global warming are increasing by the day, as the strain on major >>>>> ecosystems >>>>> reaches a new level of stress. Analysis shows that even a zero-emission >>>>> pathway will not be enough alone to slow warming and avoid further >>>>> devastation. This points to an urgent need to consider establishing an >>>>> immediate way to cool the planet. Is reversing climate change a real >>>>> possibility? What would it take to refreeze the Arctic and Antarctic ice >>>>> to >>>>> repair the climate? >>>>> >>>>> David Keith – Professor of Applied Physics, Harvard >>>>> Ye Tao – Principal Investigator, Rowland Institute at Harvard >>>>> Holly Jean Buck – Science Writer & Analyst >>>>> >>>>> -- >>>>> 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-06JsW0OtEti5ZfcnPe9%2BM43bB4EEa4p-PRvhr7VVdz3XA%40mail.gmail.com >>>>> <https://groups.google.com/d/msgid/geoengineering/CAJ3C-06JsW0OtEti5ZfcnPe9%2BM43bB4EEa4p-PRvhr7VVdz3XA%40mail.gmail.com?utm_medium=email&utm_source=footer> >>>>> . >>>>> >>>> -- >>> 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/1d332f63-84f7-42cb-91d4-afc4fa71593bn%40googlegroups.com >>> <https://groups.google.com/d/msgid/geoengineering/1d332f63-84f7-42cb-91d4-afc4fa71593bn%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > 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/b7cd0c76-abfb-4e6d-a841-b2139ca396f5n%40googlegroups.com > <https://groups.google.com/d/msgid/geoengineering/b7cd0c76-abfb-4e6d-a841-b2139ca396f5n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "geoengineering" group. 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