Or so says the Fail. If you don’t want your mind poisoned, you can read much the same press release from Reuters. If you’d prefer it described in more moderate language (you weirdo!) you can read the BAS PR directly: New Antarctic ice discovery aids future climate predictions:
A team of British climate scientists comparing today’s environment with the warm period before the last ice age has discovered a 65% reduction of Antarctic sea ice around 128,000 years ago. The finding is an important contribution towards the challenge of making robust predictions about the Earth’s future climate.
Or you could actually read the paper itself, Antarctic last interglacial isotope peak in response to sea ice retreat not ice-sheet collapse, Max D. Holloway (who?), Louise C. Sime (yay!), Joy S. Singarayer, Julia C. Tindall, Pete Bunch & Paul J. Valdes; doi:10.1038/ncomms12293:
Several studies have suggested that sea-level rise during the last interglacial implies retreat of the West Antarctic Ice Sheet (WAIS). The prevalent hypothesis is that the retreat coincided with the peak Antarctic temperature and stable water isotope values from 128,000 years ago (128 ka); very early in the last interglacial. Here, by analysing climate model simulations of last interglacial WAIS loss featuring water isotopes, we show instead that the isotopic response to WAIS loss is in opposition to the isotopic evidence at 128 ka. Instead, a reduction in winter sea ice area of 65±7% fully explains the 128 ka ice core evidence. Our finding of a marked retreat of the sea ice at 128 ka demonstrates the sensitivity of Antarctic sea ice extent to climate warming.
That’s all very well but a bit kinda science-y and hard to understand, so Louise tell be she far prefers the Express with “CLIMATE CHANGE SHOCK: Global warming happened LONG before man started burning fossil fuels”.
I’m a busy man trying to make 2 and 3 EDR DEVM look plausible with a new modem, so I don’t have time for trivia like actually reading the paper, but I’ll throw
at you, from which I deduce that they are using as observations four ice cores, and trying to make their simulations fit what they see. So the credibility of the results depends very strongly on how much you trust the GCM in general, and how much you trust its sea ice and in particular its delta-O-18. Indeed, I don’t even know what GCM they’re using until I read to the end… oh, its HadCM3. Excellent, a model you can trust, far better than that crummy HadGEMx.
Oh, I’ve missed the punchline haven’t I? Can you trust this? Well it is, like so much science, indicative. It is a direction that might prove fruitful. Re read facts and theories if you find yourself confused by that.
Stop press: there’s a delightfully garbled version in the Indescribably hopeless.