2007 - [Revkin suggests that sea ice loss is meaningful] - Arctic Melt Unnerves the Experts - NYTimes.com
Some scientists who have long doubted that a human influence could be clearly discerned in the Arctic’s changing climate now agree that the trend is hard to ascribe to anything else.2009: [After "irreversible" sea ice loss reverses, Revkin suggests that sea ice growth is meaningless] - Dot Earth Blog - NYTimes.com
“We used to argue that a lot of the variability up to the late 1990s was induced by changes in the winds, natural changes not obviously related to global warming,” said John Michael Wallace, a scientist at the University of Washington. “But changes in the last few years make you have to question that. I’m much more open to the idea that we might have passed a point where it’s becoming essentially irreversible.”
Experts say the ice retreat is likely to be even bigger next summer because this winter’s freeze is starting from such a huge ice deficit. At least one researcher, Wieslaw Maslowski of the Naval Postgraduate School in Monterey, Calif., projects a blue Arctic Ocean in summers by 2013.
Variations in polar sea ice on short time scales, up or down, are essentially meaningless, my contacts studying the cryosphere always stress.