Antarctic sea ice gate

“And just in case further evidence is needed, [a] recent 2009 paper by Turner et al. (on which Comiso was a co-author), concluded that:

Based on a new analysis of passive microwave satellite data, we demonstrate that the annual mean extent of Antarctic sea ice has increased at a statistically significant rate of 0.97% dec-1 since the late 1970s.

This rate of increase is nearly twice as great as the value given in the [UN IPCC’s] AR4 (from its non-peer-reviewed source).

So, the peer reviewed literature, both extant at the time of the AR4 as well as published since the release of the AR4, shows that there has been a significant increase in the extent of sea ice around Antarctica since the time of the first satellite observations observed in the late 1970s. And yet the AR4 somehow “assessed” the evidence and determined not only that the increase was only half the rate established in the peer-reviewed literature, but also that it was statistically insignificant as well. And thus, the increase in sea ice in the Antarctic was downplayed in preference to highlighting the observed decline in sea ice in the Arctic.

It is little wonder why, considering that the AR4 found that “Sea ice is projected to shrink in both the Arctic and Antarctic under all SRES scenarios.””  “Another IPCC error:  antarctic sea ice increase underestimated by 50%

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