Ms Vaughn, Thank you for your insightful lecture at Friends of the Earth. I was particularly interested by your comments regarding the inevitable collapse of Greenland's ice sheet, due to its bistable state resulting from its high-altitude surface. May I ask, has any specific research been done on whether sulfur or other geoengineering may be able to stop this sheet collapsing once it has started, or may even be able to reverse such a collapse?
Further, I note your point on the reversibility of Arctic sea-ice loss. I remain concerned that the cooling from sulfur aerosols will be inadequate to overcome the ice-albedo feedback effect - as open ocean has a very low albedo. Do you have any data to back up your apparent faith in reversibility? A --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
