Curiously, I can't find you any references. But it's rather obvious if you think about the relative timescale - and I've challenged many top climate scientists to dispute it, and nobody has managed! The Arctic sea ice is indeed the "Elephant in the room", that nobody chooses to notice, because the prospect of having to deploy geoengineering is so uncomfortable for them.
Perhaps it's cowardice. But it's potentially tragic because geoengineering could be left too late. John -- Hawkins, Dave wrote: > Hi John, > In your note you say, "The undisputed fact that emissions reduction cannot > save the Arctic sea ice, at its current rate of retreat..." > Can you provide a reference or two that reaches this conclusion? > (I'm not asking to dispute what you say but would like to see what you have > in mind as support for the proposition.) > Thanks > David > > ----- Original Message ----- > From: [email protected] <[email protected]> > To: Geoengineering <[email protected]> > Sent: Thu Dec 10 16:46:31 2009 > Subject: [geo] Population control, emission cuts, but geoengineering? > > > Hi all, > > Two excellent programmes on the environment and mankind's impact: > > David Attenborough: > http://www.bbc.co.uk/iplayer/episode/b00pdjmk/Horizon_20092010_How_Many_People_Can_Live_on_Planet_Earth/ > > > > Iain Stewart: > http://www.bbc.co.uk/iplayer/episode/b00jf6md/Hot_Planet/ > > Unfortunately, although Iain had sympathetic mention of Klaus Lackner's > artificial trees, solar radiation management was represented by sulphur > being fired into the stratosphere by guns - mention of ozone disruption > - and the programme ended with punch line "geoengineering is too > expensive and too dangerous". This was an unwarranted dismissal of the > technology with probably the best chance of saving the Arctic sea ice. > The undisputed fact that emissions reduction cannot save the Arctic sea > ice, at its current rate of retreat, was not mentioned. > > 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. > > > -- 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.
