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Posts from December 0

Antarctic Warming Revisited: Blog Analysis (turned scientific paper) Tempers Alarm

By Chip Knappenberger -- December 10, 2010

Back in January of 2009, I reviewed the implications of a then just-published article in Nature magazine that was billed as shedding important new light on some aspects of the long-term (since the late 1950s) temperature history across Antarctica.

The article, by Eric Steig and colleagues, described more warming taking place over a larger portion of Antarctica than had previously been recognized. The implication was that the temperature rise across Antarctica was not lagging behind the rest of the world and thus “not bucking the trend of global warming” as apparently some “contrarians” were claiming.

Now, that result must be tempered, as a new paper is forthcoming that improves upon the analytical technique developed by the Steig team and finds significantly less warming across the continent as a whole (about 50% less), and a different geographical pattern of temperature changes across Antarctica—results that fit more closely with the existing (that is, pre-Steig et al.)…

Yet Another Incorrect IPCC Assessment: Antarctic Sea Ice Increase

By Chip Knappenberger -- March 8, 2010

Another error in the influential reports from the Intergovernmental Panel on Climate Change (IPCC) reports has been identified. This one concerns the rate of expansion of sea ice around Antarctica.

While not an issue for estimates of future sea level rise (sea ice is floating ice which does not influence sea level), a significant expansion of Antarctic sea ice runs counter to climate model projections. As the errors in the climate change “assessment” reports from the IPCC mount, its aura of scientific authority erodes, and with it, the justification for using their findings to underpin national and international efforts to regulate greenhouse gases.

Some climate scientists have distanced themselves from the IPCC Working Group II’s (WGII’s) Fourth Assessment Report (AR4), Impacts, Adaptation, and Vulnerability, prefering instead  the stronger hard science in the Working Group I (WGI) Report—The Physical Science Basis.…