Here are some more quotes, progs. All of them, including your Mr. Parkinson, concur it is the thinness of the ice.
Quote:Comments from Arctic Experts
Several Arctic sea ice experts have weighed in on the record-breaking minimum in 2012 and the effects of the summer storm on this record. According to NSIDC Director Mark Serreze,
"The previous record, set in 2007, occurred because of near perfect summer weather for melting ice. Apart from one big storm in early August, weather patterns this year were unremarkable. The ice is so thin and weak now, it doesn't matter how the winds blow."
NSIDC scientist Walt Meier said,
"...in the context of what's happened in the last several years and throughout the satellite record, it's an indication that the Arctic sea ice cover is fundamentally changing....The Arctic used to be dominated by multiyear ice, or ice that stayed around for several years. Now it's becoming more of a seasonal ice cover and large areas are now prone to melting out in summer."
Dr. Julienne Stroeve (another NSIDC scientist) said,
"The acceleration of the loss of the extent of the ice is mostly because the ice has been so thin. This would explain why it has melted so much this year. By June the ice edge had pulled back to where it normally is in September,"
"The 2007 record was set when you had weather conditions which were perfect for melting. This year we didn't have those. It was mixed. So this suggests the ice has got to a point where it's so thin it doesn't matter what the weather is, it's going to melt in the summer. This could become the new normal"
NSIDC Arctic sea ice news and analysis:
"Other than the August storm, the pressure pattern in 2012 does not appear to have been as favorable in promoting ice loss as was the case in 2007, and yet a new record low occurred."
Claire Parkinson, a climate scientist at NASA Goddard Space Flight Center said,
"The storm definitely seems to have played a role in this year's unusually large retreat of the ice. But that exact same storm, had it occurred decades ago when the ice was thicker and more extensive, likely wouldn't have had as prominent an impact, because the ice wasn't as vulnerable then as it is now."
Paul A. Newman, chief scientist for Atmospheric Sciences at NASA's Goddard Space Flight Center estimated that there have been about eight storms of similar strength during the month of August in the last 34 years of satellite records - one every 4 to 5 years.