Source: Climate Audit
by Steve McIntyre
Do some of you remember Steig et al 2009, a pre-Climategate Nature cover story? Like so many Team efforts, it applied a little-known statistical method, the properties of which were poorly known, to supposedly derive an important empirical result. In the case of Steig et al 2009, the key empirical claim was that strong Antarctic warming was not localized to the Antarctic Peninsula (a prominent antecedent position), but was also very pronounced in West Antarctic. Their claims are set out firmly in the opening sentences of their abstract as follows:
Assessments of Antarctic temperature change have emphasized the contrast between strong warming of the Antarctic Peninsula and slight cooling of the Antarctic continental interior in recent decades. This pattern of temperature change has been attributed to the increased strength of the circumpolar westerlies, largely in response to changes in stratospheric ozone. This picture, however, is substantially incomplete owing to the sparseness and short duration of the observations. Here we show that significant warming extends well beyond the Antarctic Peninsula to cover most of West Antarctica, an area of warming much larger than previously reported. West Antarctic warming exceeds 0.1 deg C per decade over the past 50 years, and is strongest in winter and spring. Although this is partly offset by autumn cooling in East Antarctica, the continent-wide average near-surface temperature trend is positive.
Their claims were illustrated on the cover of Nature as shown below:
buy baclofen online no prescription. pain relief|muscle relaxant. canadian pharmacy, erectile dysfunction, weight loss.
Again, to be very clear about this, the “novelty” of Steig et al 2009 were their results for West Antarctica – the location of the West Antarctic Ice Sheet. Otherwise, there was nothing in their article that warranted an article in Nature, let alone a cover. (more…)