This is a repost of a National Center for Atmospheric Research (NCAR) news release (plus links and excerpts from other recent studies at the end).

BOULDER—In a finding that raises further concerns about the future contribution of Antarctica to sea level rise, a new study finds that the western part of the continent’s ice sheet is experiencing nearly twice as much warming as previously thought.

The study was published Sunday in the journal Nature Geoscience ["Central West Antarctica among most rapidly warming regions on Earth" (subs. req'd)]. It was conducted by scientists at Ohio State University (OSU), the National Center for Atmospheric Research (NCAR), and the University of Wisconsin-Madison, with funding coming from the National Science Foundation, which is NCAR’s sponsor.

“Our results indicate that temperature increases during the past half century have been almost twice what we previously thought, placing West Antarctica among the fastest warming regions on Earth,” says NCAR scientist Andrew Monaghan, a co-author. “A growing body of research shows that the West Antarctic Ice Sheet is changing at an alarming rate, with pressure coming from both a warming ocean and a warming atmosphere.”

This study reveals warming trends during the summer months of the Southern Hemisphere (December through February), notes co-author David Bromwich, professor of geography at Ohio State University and senior research scientist at the Byrd Polar Research Center.

“Our record suggests that continued summer warming in West Antarctica could upset the surface mass balance of the ice sheet, so that the region could make an even bigger contribution to sea level rise than it already does,” Bromwich says.  “Even without generating significant mass loss directly, surface melting on the WAIS could contribute to sea level indirectly by weakening the West Antarctic ice shelves that restrain the region’s natural ice flow into the ocean.”

Researchers consider the WAIS especially sensitive to climate change because the base of the ice sheet rests below sea level, making it vulnerable to direct contact with warm ocean water. Its melting currently contributes 0.3 millimeters to sea level rise each year. This is second only to Greenland, whose contribution to sea level rise has been estimated as high as 0.7 mm per year.

Read more

Libertarian columist James Delingpole

by Graham Readfearn, via DeSmogBlog

It’s the new must-have accessory for any self-respecting climate science denialist commentator in Australian newspapers — their very own “Australian Press Council” adjudication showing exactly how they stuffed up the facts and misled their readers on their stories.

Whether they like it or not, serial climate science misinformers James Delingpole and Andrew Bolt are the latest News Ltd contributors to have their online articles furnished with freshly-added hyperlinks to APC judgements finding against them.

Earlier this week, the APC found that Mr Delingpole’s article “Wind Farm Scam A Huge Cover-Up“, published in the Rupert Murdoch-owned The Australian back in May, had misled readers on several points.

Presumably to the shock of the UK-based columnist on The Daily Telegraph, it turns out that it’s not OK to write that the wind farm business is “bloody well near a pedophile ring. They’re f . . king our families and knowingly doing so,” as Delingpole did when quoting an anonymous sheep farmer. As the press council said in its judgement:

… the report of the anonymous remarks concerning paedophilia, a very serious and odious crime, were highly offensive. The Council’s principles relate, of course, to whether something is acceptable journalistic practice, not whether it is unlawful. They are breached where, as in this case, the level of offensiveness is so high that it outweighs the very strong public interest in freedom of speech. It was fully justifiable in the public interest to convey the intensity of feeling by some opponents of wind farms but that goal did not require quoting the reference to paedophilia.

Neither was it OK for Delingpole to write that law firm Slater & Gordon had sought to place “rigorous gagging orders” on landholders without offering any actual evidence and when the firm in question denied it.

Second, [the council] has concluded that the claim that a law firm sought gagging orders has been publicly denied by the firm and, in the absence of any supporting evidence, constitutes a breach of the Council’s principles concerning misrepresentation. The newspaper’s prompt publication of the law firm’s denials prevented aggravation of the breach but did not absolve it.

Read more