1930s photos show Greenland glaciers retreating faster than today
But nobody thought it was a big deal
Recently unearthed photographs taken by Danish explorers in the 1930s show glaciers in Greenland retreating faster than they are today, according to researchers.
We're not worried about rising sea levels. Well, we are in a seaplane.
The photos in question were taken by the seventh Thule Expedition to Greenland led by Dr Knud Rasmussen in 1932. The explorers were equipped with a seaplane, which they used to take aerial snaps of glaciers along the Arctic island's coasts.
After the expedition returned the photographs were used to make maps and charts of the area, then placed in archives in Denmark where they lay forgotten for decades. Then, in recent years, international researchers trying to find information on the history of the Greenland glaciers stumbled across them.
Taken together the pictures show clearly that glaciers in the region were melting even faster in the 1930s than they are today, according to Professor Jason Box, who works at the Byrd Polar Research Center at Ohio State uni.
There's much scientific interest in the Greenland ice sheet, as unlike most of the Arctic ice cap it sits on land: thus if it were to melt, serious sea level rises could occur (though the latest research says that this doesn't appear to be on the cards).
It's difficult to know exactly what's happening to the Greenland ice in total and very different estimates have been produced in recent times. However Professor Box says that many glaciers along the coasts have started retreating in the past decade.
It now appears that the glaciers were retreating even faster eighty years ago: but nobody worried about it, and the ice subsequently came back again. Box theorises that this is likely to be because of sulphur pollution released into the atmosphere by humans, especially by burning coal and fuel oils. This is known to have a cooling effect.
Unfortunately atmospheric sulphur emissions also cause other things such as acid rain, and as a result rich Western nations cracked down on sulphates in the 1960s. Prof Box believes that this led to warming from the 1970s onward, which has now led to the glaciers retreating since around 2000.
Other scientists have said recently that late-20th-century temperature rises in the Arctic may result largely from clean-air legislation intended to deal with acid rain: some have even gone so far as to suggest that rapid coal- and diesel-fuelled industrialisation in China is serving to prevent further warming right now.
Still other scientists, differing with Prof Box, offer another picture altogether of Arctic temperatures, in which there were peaks both in the 1930s and 1950s and cooling until the 1990s: and in which the warming trend which resulted in the melting seen by Rasmussen's expedition actually started as early as 1840, before the industrial revolution and human-driven carbon emission had even got rolling. In that scenario, variations in the Sun seem to have much more weight than is generally accepted by today's climatologists.
At any rate, the new information from the old Danish pictures adds some more data to the subject. The new study by Box and his co-authors is published by Nature Geoscience, here. ®
Re: Was it only me.....
"the ad-hom's against Lewis (and Andrew Orlowski etc.. ) are from mindless ecotards who don't read the article .."
A lot of us are old time Vulture readers fucking annoyed with Lewis and Orlowski hijacking the site for their own personal and deliberately divisive crusades. I want the old 'us against the IT industry' Reg back, I can read biased shit anywhere and it's annoying everywhere it stains the web.
FFS they were both too busy to track the Oracle vs Google case, beyond reprinting whatever Mueller or Naughton were paid to say (Oracle & Microsoft payroll respectively) . One of the most significant lawsuits ever for IT and no research done at all. WTF were they doing? Not their jobs.
You're missing the point
Poking fun at the established popular view is a key charm of El Reg. It's the spice that makes the meal. If they stop this they will have no special offer.
If you don't like that why are you here? There are many places where you can get your preferred pablum bland though it may be. That is the common fare. Why do you have to come here and demand the common gruel when there is no lack of supply elsewhere?
Is there some drive in you that insists that because you cannot bear spice that there must be none anywhere? What right have you to impose on all the world your intolerance of variety?
Re: Dear Reg editors :-
What exactly do you expect the reg editors to do about Greenland's glaciers?