Glaciers in Norway Growing Again. And Alaskan Glaciers Grow for First Time in 250 years

”A bitterly cold Alaskan summer has had surprising results. For the first time in the area’s recorded history (250 years), area glaciers have begun to expand, rather than shrink. Summer temperatures, which were some 3 degrees below average, allowed record levels of winter snow to remain much longer, leading to the increase in glacial mass.”

”In general, the weather this summer was the worst I have seen in at least 20 years”.

”Since 1946, the USGS has maintained a research project measuring the state of Alaskan glaciers. This year saw records broken for most snow buildup. It was also the first time since any records began being that the glaciers did not shrink during the summer months.

Those records date from the mid 1700s, when the region was first visited by Russian explorers. ”

Global Warming Anyone?

Isbreene vokser igjen

http://www.nrk.no/nyheter/1.6322673

Nå vokser isbreene!

http://www.nrk.no/nyheter/distrikt/hordaland/1.6117664

The Article from DailyTech here:

http://www.dailytech.com/Glaciers+in+Norway+Growing+Again/article13540.htm

Glaciers in Norway Growing Again

Michael Asher (Blog) – November 27, 2008 8:47 PM

A glacial region in Norway  (Source: NRK)Scandinavian nation reverses trend, mirrors results in Alaska, elsewhere.

After years of decline, glaciers in Norway are again growing, reports the Norwegian Water Resources and Energy Directorate (NVE). The actual magnitude of the growth, which appears to have begun over the last two years, has not yet been quantified, says NVE Senior Engineer Hallgeir Elvehøy.

The flow rate of many glaciers has also declined. Glacier flow ultimately acts to reduce accumulation, as the ice moves to lower, warmer elevations.

The original trend had been fairly rapid decline since the year 2000. 

The developments were originally reported by the Norwegian Broadcasting Corporation (NRK).

DailyTech has previously reported on the growth in Alaskan glaciers, reversing a 250-year trend of loss. Some glaciers in Canada, California, and New Zealand are also growing, as the result of both colder temperatures and increased snowfall.

Ed Josberger, a glaciologist with the U.S. Geological Survey, says the growth is ”a bit of an anomaly”, but not to be unexpected.

Despite the recent growth, most glaciers in the nation are still smaller than they were in 1982. However, Elvehøy says that the glaciers were even smaller during the ‘Medieval Warm Period’ of the Viking Era, prior to around the year 1350.

Not all Norwegian glaciers appear to be affected, most notably those in the Jotenheimen region of Southern Norway.

And here:

http://www.dailytech.com/Alaskan+Glaciers+Grow+for+First+Time+in+250+years/

article13215.htm

Alaskan Glaciers Grow for First Time in 250 years

Michael Asher (Blog) – October 16, 2008 9:48 AM

Glacier Bay National Park. Two and a half centuries ago, the entire area was covered by thick sheets of ice.High snowfall and cold weather to blame.

A bitterly cold Alaskan summer has had surprising results. For the first time in the area’s recorded history, area glaciers have begun to expand, rather than shrink. Summer temperatures, which were some 3 degrees below average, allowed record levels of winter snow to remain much longer, leading to the increase in glacial mass.

”In mid-June, I was surprised to see snow still at sea level in Prince William Sound”, said glaciologist Bruce Molnia. ”In general, the weather this summer was the worst I have seen in at least 20 years”.

”On the Juneau Icefield, there was still 20 feet of new snow on the surface [in] late July. At Bering Glacier, a landslide I am studying [did] not become snow free until early August.”

Molnia, who works for the US Geological Survey, said it’s been a ”long time” since area glaciers have seen a positive mass balance — an increase in the total amount of ice they contain.

Since 1946, the USGS has maintained a research project measuring the state of Alaskan glaciers. This year saw records broken for most snow buildup. It was also the first time since any records began being that the glaciers did not shrink during the summer months.

Those records date from the mid 1700s, when the region was first visited by Russian explorers.  Molnia estimates that Alaskan glaciers have lost about 15% of their total area since that time — an area the size of Connecticut.

One of the largest areas of shrinkage has been at the national park of Glacier Bay. When Alexei Ilich Chirikof first arrived in 1741, the bay didn’t exist at all — only a solid wall of ice. From that time until the early 1900s, the ice retreated some 50 miles, to form the bay and surrounding area.

Accordingly to Molnia, a difference of just 3 or 4 degrees is enough to shift the mass balance of glaciers from rapid shrinkage to rapid growth. From the 1600s to the 1900s, that’s just the amount of warming that was seen, as the planet exited the Little Ice Age.

Molnia says one cold summer doesn’t mean the start of a new climatic trend. At least years like this, however, might mark the beginning of another Little Ice Age.

As DailyTech reported earlier, Arctic sea ice this year has also increased substantially from its low in 2007.

Läs även andra bloggares åsikter om <a href=”http://bloggar.se/om/milj%F6 rel=”tag”>miljö</a> 

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2 svar to “Glaciers in Norway Growing Again. And Alaskan Glaciers Grow for First Time in 250 years”

  1. North Pole Sea Ice TWICE AS THICK as expected « UD/RK Samhälls Debatt Says:

    […] Glaciers in Norway Growing Again. And Alaskan Glaciers Grow for First Time in 250 years […]

  2. Climate Gate – All the manipulations and lies revealed 118 « UD/RK Samhälls Debatt Says:

    […] Glaciers in Norway Growing Again. And Alaskan Glaciers Grow for First Time in 250 years […]

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