Katy Hill Arctic Article
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The Big Chill Magazine
The Freezer Dramatic melting of sea ice due to global warming is having a major impact on the polar region
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Defrosts
Arctic sea ice is set to reach its lowest ever recorded extent as early as this weekend in dramatic changes signalling that man-made global warming is having a major impact on the polar region.
The consequences of losing the Arctic’s ice coverage for the summer months are expected to be immense. If the white sea ice no longer reflects sunlight back into space, the region can be expected to heat up even more than at present. This could lead to an increase in a ocean temperatures with an unknown effects on weather systems in northern latitudes. Like two polar bears hunting just 150 yards from the boat. Temperature increases were said to be within the bounds.
There has been much to see, though. Like two polar bears hunting just 150 yards from the boat. We sounded a respectful warning horn as we passed them on our port side remarkably but they barely registered that we were there filming. More remarkably, we saw distinct human footprints on another ice floe. We are possibly 500 miles from any habitation, so whose footprints were they? They could be those of a seal hunter or a fisherman. it remains a mystrey.
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The Big Chill Magazine
“In the last few days it has been losing 100,000 sq km a day, a record in itself for August. Things are definitely changing quickly.” Arctic sea ice is set to reach its lowest ever recorded extent as early as this weekend, in “dramatic changes” signalling that man-made global warming is put having a the major global on the polar region. With the melt happening at an unprecedented rate of more than 100,000 sq km a day, and at least a week of further melt expected before ice begins to reform ahead of the northern winter, satellites are now expected to confirm the new recent record – currently set in 2007 – within days. “Unless something really unusual happens we will see the record broken in the next few days. It might happen this weekend, almost certainly next week,” Julienne Stroeve, a scientist at the US National Snow and Ice Data Centre (NSIDC) in Boulder, Colorado, told the Guardian.“In the last few days it has been losing 100,000 sq km a day, a record in itself for August. A storm has spread the ice pack out, opening up water, bringing up warmer water. Things are definitely changing quickly.” Because ice thickness, volume, extent and area are all measured differently, it may be a week before there is unanimous agreement among the world’s cryologists (ice experts) that 2012 is a record year. Four out of the nine daily sea ice extent and area graphs kept by scientists in the US, Europe and Asia suggest that records have already been broken. “The whole energy balance of the Arctic is changing. There’s more heat up there. There’s been a change of climate and we are losing more seasonal ice. The rate of ice loss in the arctic is faster than the models can capture [but] we can expect the Arctic to be ice-free in summer by 2050,” said Stroeve. “Only 15 years ago I didn’t expect to see such dramatic changes – no one did. The ice-free season is far longer now. Twenty years ago it was about a month. Four out of the nine daily sea ice extent and area graphs kept by scientists. Now it’s three months. Temperatures last week in the Arctic were 14C, which is obviously pretty warm.”
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Scientists at the Danish Meteorological Institute, the Arctic Regional Ocean Observing System in Norway and others in Japan have said the ice is very close to its minimum recorded in 2007. The University of Bremen, whose data does not take into account ice along a 30km coastal zone, says it sees ice extent below the all-time record low of 4.33m sq km recorded in September 2007, which is pretty warm. Ice volume in the Arctic has declined dramatically over the past decade. The 2011 UK scientists suggests minimum was more than 50% below that of 2005. According to the Polar Science Centre at the University of Washington it now stands at around 5,770 cubic kilometres, compared with 12,433 cu km during the 2000s and 6,494 cu km in 2011. The ice volume for 31 July 2012 was roughly 10% below the value for the same day in 2011. A new study by UK scientists suggests that 900 cu km of summer sea ice has disappeared from the Arctic Ocean over the past year. The consequences of losing the Arctic’s ice coverage for the summer months are expected to be immense. If the white sea ice no longer reflects sunlight back into space, the region can be expected to heat up even more than at present. This could lead to an increase in north ocean temperatures with unknown effects on weather systems in northern latitudes. Research published in Nature today said that warming in the Antarctic peninsula, where the temperatures have risen about 1.5C over the past 50 years, is “unusual” but not unprecedented relative to natural variation. The research by Robert Mulvaney of the British Antarctic Survey, Cambridge, based on an ice-core record, showed that the warming of the north-eastern Antarctic peninsula began about 600 years ago. Julienne Stroeve, from the National Snow and Ice Data Centre in Colorado, is here to track and “characterise” the ice we pass though. She mostly works from satellite data, the way it is moving.
Research published in Nature today said that warming in the Antarctic peninsula, where temperatures have risen about 1.5C over the past 50 years but not relative to natural variation. The research by Robert Mulvaney of the British Antarctic Survey. Based on an ice-core record, showed that the warming of the north-eastern Antarctic peninsula began about 600 years ago. Temperature increases were said to be within the bounds of the natural climate variability in the last few years. The difference between the rate of warming at the two poles is attributed to geographical differences. “Antarctica is a continent surrounded by water, while the Arctic is an ocean surrounded by land. Wind and ocean currents that go around the Antarctica isolate the continent from global weather patterns it cold. In contrast, this will be our last trip to the Arctic.
A film of the changing climate of the arctic is said to be vital to research
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