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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.



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RE: YAWN...
By masher2 (blog) on 11/28/2008 12:25:46 AM , Rating: 4
> "Here is something far more interesting: http://news.nationalgeographic.com/news/2008/11/08..."

That's actually a very interesting study. It's simply modelling, of course, not hard science -- but its some of the first modelling that doesn't clash with the hard facts of earth's history.

Paleoclimatology tells us that ice ages didn't begin until CO2 levels dropped to a certain point, causing the earth's climate to enter a chaotic state. We also know that extremely high levels of CO2 never caused runaway warming either. The obvious assumption to be drawn is that CO2 is a strong GHG when temperatures are very cold and water vapor levels low. But when temperatures are higher, water vapor predominates; it's a much stronger, more more prevalent gas, and it absorbs in a much wider spectrum, leaving little for CO2 to do.

The study you cite is one of the first that begins to duplicate what we actually know has happened in the earth's past. We're still of course many decades from being able to accurate model climate...but this work is real progress on that front.


RE: YAWN...
By inighthawki on 11/28/08, Rating: 0
RE: YAWN...
By inighthawki on 11/28/08, Rating: 0
"We don't know how to make a $500 computer that's not a piece of junk." -- Apple CEO Steve Jobs

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