1930s photos show Greenland glaciers retreating faster than today
AGGGHHH Global Warming, I mean Climate Change I mean ManBearPig!!! We're all going to die unless we give all of our money to the government and live like cavemen! :rolleyes:
[QUOTE] Original URL: [URL]http://www.theregister.co.uk/2012/06/02/1930s_greenland_glacier_retreat/[/URL]
[B]1930s photos show Greenland glaciers retreating faster than today[/B]
But nobody thought it was a big deal
By [URL="http://forms.theregister.co.uk/mail_author/?story_url=/2012/06/02/1930s_greenland_glacier_retreat/"]Lewis Page[/URL]
Posted in [URL="http://www.theregister.co.uk/science/"]Science[/URL], [URL="http://www.theregister.co.uk/2012/06/02/"]2nd June 2012 09:07 GMT[/URL]
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 [URL="http://www.theregister.co.uk/2012/05/04/greenland_the_glaciers_are_ok/"]doesn't appear to be on the cards[/URL] ).
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.
[B]Other scientists [URL="http://www.theregister.co.uk/2009/04/09/arctic_aerosols_goddard_institute/"]have said recently[/URL]  that late-20th-century temperature rises in the Arctic may result largely from clean-air legislation intended to deal with acid rain[/B]: [B]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.[/B]
Still other scientists, differing with Prof Box, offer [URL="http://www.theregister.co.uk/2010/08/02/arctic_treering_cooling_research/"]another picture altogether[/URL]  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 [I]Nature Geoscience[/I], [URL="http://www.nature.com/ngeo/journal/v5/n6/full/ngeo1481.html"]here[/URL] . ®
[LIST][*] [URL="http://www.theregister.co.uk/2012/05/04/greenland_the_glaciers_are_ok/"]Greenland glaciers not set to cause disastrous sea level rises - study[/URL] (4 May 2012)[URL]http://www.theregister.co.uk/2012/05/04/greenland_the_glaciers_are_ok/[/URL][*] [URL="http://www.theregister.co.uk/2012/02/09/grace_data_himalayas_not_melting/"]New sat data shows Himalayan glaciers hardly melting at all[/URL] (9 February 2012)[URL]http://www.theregister.co.uk/2012/02/09/grace_data_himalayas_not_melting/[/URL][*] [URL="http://www.theregister.co.uk/2012/01/06/beaufort_freshwater_russian_rivers/"]Arctic freshening not due to ice melt after all, says NASA[/URL] (6 January 2012)[URL]http://www.theregister.co.uk/2012/01/06/beaufort_freshwater_russian_rivers/[/URL][*] [URL="http://www.theregister.co.uk/2011/02/10/no_tipping_point_for_arctic_sea_ice/"]No 'tipping point' for Arctic sea ice - latest science[/URL] (10 February 2011)[URL]http://www.theregister.co.uk/2011/02/10/no_tipping_point_for_arctic_sea_ice/[/URL][*] [URL="http://www.theregister.co.uk/2010/09/07/revised_ice_loss_estimates/"]Greenland ice loss rates 'one-third' of what was thought[/URL] (7 September 2010)[URL]http://www.theregister.co.uk/2010/09/07/revised_ice_loss_estimates/[/URL][/LIST]
[QUOTE][B]Heavy ice could delay start of Shell Alaska's Arctic drilling
By KIM MURPHY
Los Angeles Times
Published in the Miami Herald
SEATTLE -- The heaviest polar ice in more than a decade could postpone the start of offshore oil drilling in the Arctic Ocean until the beginning of August, a delay of up to two weeks, Shell Alaska officials said.
Unveiling a newly refurbished ice-class rig that is poised to begin drilling two exploratory wells this summer in the Beaufort Sea, Shell executives said Friday that the unusually robust sea ice would further narrow what already is a tight window for operations. The company's $4-billion program is designed to measure the extent of what could be the United States' most important new inventory of oil and gas.[/B][/QUOTE]
[QUOTE=Warfish;4483682]I continue to believe that a large portion of the "Cimate Change" movement is more about political and socio-economic agenda than it is about long-term understanding of Earth's climate.
I fully support Govt. spending on better understanding the massive complexity that is our planetary climate.
I do not support short-term socio-political actions based on a very short-term and incomplete understanding of said climate.[/QUOTE]
Not to mention, tweaked, adjusted and outright faked data to prove points to force that short term socio-political action. Do you think that it is possible at this point to get an honest account of the global climate record? Supposedly the data that the current tweaked numbers are based on are "missing" like just so much police shooting surveillance video in Las Vegas.
[QUOTE=detjetsfan;4484928]Global Warming is a myth. Hell, even if it's not a myth all that would happen is the creation of thousands of square miles of new fertile,forest land in Russia, Canada and Alaska.
I plan on continuing to drive my SUV. Gets 17 mpg HWY. Take that libs.[/QUOTE]
Another good one Vincenzo.
Paddle a canoe down to Brazil and ask them why they logged the equivalent of one fifth of the entire landmass of Alaska in 15 years.
[QUOTE]The team digitized the images and used software to study differences in the southeast Greenland coastline where ice meets the ocean. They found two periods of significant glacier retreat -- one in 1933-1934 and a second from 2000 to 2010.
In the 1930s, fewer glaciers were melting than are melting today, and most of those that were melting terminated on land. The glaciers were retreating at an average of about 20 yards per year, with the fastest retreating about 375 yards per year. In the last decade, the melting glaciers were primarily those that terminated in the ocean. They were retreating at an average rate of about 50 yards per year, with the fastest melting rates close to 900 yards per year.