[Vision2020] "Damn the torpedoes, full speed ahead!"
Art Deco
deco at moscow.com
Sun Oct 9 17:02:30 PDT 2005
Ted, et al,
I've been meaning to post this for awhile. Your timely remarks offer a context.
Art Deco (Wayne A. Fox)
deco at moscow.com
http://www.newscientist.com/article/mg18725124.500.html
Climate warning as Siberia melts
a.. 11 August 2005
b.. NewScientist.com news service
c.. Fred Pearce
THE world's largest frozen peat bog is melting. An area stretching for a million square kilometres across the permafrost of western Siberia is turning into a mass of shallow lakes as the ground melts, according to Russian researchers just back from the region.
The sudden melting of a bog the size of France and Germany combined could unleash billions of tonnes of methane, a potent greenhouse gas, into the atmosphere.
The news of the dramatic transformation of one of the world's least visited landscapes comes from Sergei Kirpotin, a botanist at Tomsk State University, Russia, and Judith Marquand at the University of Oxford.
Kirpotin describes an "ecological landslide that is probably irreversible and is undoubtedly connected to climatic warming". He says that the entire western Siberian sub-Arctic region has begun to melt, and this "has all happened in the last three or four years".
What was until recently a featureless expanse of frozen peat is turning into a watery landscape of lakes, some more than a kilometre across. Kirpotin suspects that some unknown critical threshold has been crossed, triggering the melting.
Western Siberia has warmed faster than almost anywhere else on the planet, with an increase in average temperatures of some 3 °C in the last 40 years. The warming is believed to be a combination of man-made climate change, a cyclical change in atmospheric circulation known as the Arctic oscillation, plus feedbacks caused by melting ice, which exposes bare ground and ocean. These absorb more solar heat than white ice and snow.
Similar warming has also been taking place in Alaska: earlier this summer Jon Pelletier of the University of Arizona in Tucson reported a major expansion of lakes on the North Slope fringing the Arctic Ocean.
The findings from western Siberia follow a report two months ago that thousands of lakes in eastern Siberia have disappeared in the last 30 years, also because of climate change (New Scientist, 11 June, p 16). This apparent contradiction arises because the two events represent opposite end of the same process, known as thermokarsk.
In this process, rising air temperatures first create "frost-heave", which turns the flat permafrost into a series of hollows and hummocks known as salsas. Then as the permafrost begins to melt, water collects on the surface, forming ponds that are prevented from draining away by the frozen bog beneath. The ponds coalesce into ever larger lakes until, finally, the last permafrost melts and the lakes drain away underground.
Siberia's peat bogs formed around 11,000 years ago at the end of the last ice age. Since then they have been generating methane, most of which has been trapped within the permafrost, and sometimes deeper in ice-like structures known as clathrates. Larry Smith of the University of California, Los Angeles, estimates that the west Siberian bog alone contains some 70 billion tonnes of methane, a quarter of all the methane stored on the land surface worldwide.
His colleague Karen Frey says if the bogs dry out as they warm, the methane will oxidise and escape into the air as carbon dioxide. But if the bogs remain wet, as is the case in western Siberia today, then the methane will be released straight into the atmosphere. Methane is 20 times as potent a greenhouse gas as carbon dioxide.
In May this year, Katey Walter of the University of Alaska Fairbanks told a meeting in Washington of the Arctic Research Consortium of the US that she had found methane hotspots in eastern Siberia, where the gas was bubbling from thawing permafrost so fast it was preventing the surface from freezing, even in the midst of winter.
An international research partnership known as the Global Carbon Project earlier this year identified melting permafrost as a major source of feedbacks that could accelerate climate change by releasing greenhouse gases into the atmosphere. "Several hundred billion tonnes of carbon could be released," said the project's chief scientist, Pep Canadell of the CSIRO Division of Marine and Atmospheric Research in Canberra, Australia.
----- Original Message -----
From: Tbertruss at aol.com
To: vision2020 at moscow.com
Sent: Sunday, October 09, 2005 3:32 PM
Subject: [Vision2020] "Damn the torpedoes, full speed ahead!"
Dear Fellow Oil Hogs-
"Within a century the melting could lead to summertime ice-free ocean conditions not seen in the area in a million years, the group said Tuesday."
Above quote from this web link:
http://www.msnbc.msn.com/id/9053898/
Global warming? Just a questionable theory, like evolution! There are too many gaps in the fossil record to really say for sure for the heck happened! And don't forget, how do you explain the "evolution" of a complex molecule like DNA? Those silly scientists! And the "law of gravity," also, just a theory, supported by sampling a very small percentage of all the possible samples of matter in the billions of light years of volume and billions of years of time passed in our universe...Well, that is, unless the universe popped into existence just a few thousand years ago, which is entirely "possible," with all memories and evidence to indicate otherwise just a fantastic trick to test our faith. That's what those pre-homo sapien sapien hominid remains (my "mother" Lucy!) from millions of years ago are there for, correct?
http://www.asu.edu/clas/iho/lucy.html
http://www.d.umn.edu/cla/faculty/troufs/anth1602/pctimes.html
What do these elitist scientists know, anyway? Why, they have no "absolute proof" that suddenly gravity will not suddenly weaken, that evolution resulted in human intelligence, nor that the Earth will not soon become colder, making a fool of those who think the best scientific evidence indicates major climate change will likely kick humanity's ass in the next century or two, caused in large part by human activity.
I hope "intelligent design" is true, in some sense. Then perhaps whatever or whoever is behind "intelligent design" can now induce the advent of "intelligence" on Earth. As implied by the comedy act once done by Tily Tomlin, "The Search for Signs of Intelligent Life in the Universe," whether "intelligence" exists seems open to question. Current human responses from the most powerful in the bastions of political/economic/ideological hegemony to the coming crisis caused by melting ice raising ocean levels appears to indicate minds ruled by instinctual short sighted immediate gain, a characteristic of "lower" life forms, rather than leaving behind a better world for future generations not yet born.
Now, on to my fire breathing CO2 belching dragon (usually referred to as a "car") to be a good American consumer!
"Damn the torpedoes, full speed ahead!"
Admiral David G. Farragut Mobile Bay,
Alabama August 5, 1864.
-------------------------------
Ted Moffett
------------------------------------------------------------------------------
_____________________________________________________
List services made available by First Step Internet,
serving the communities of the Palouse since 1994.
http://www.fsr.net
mailto:Vision2020 at moscow.com
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.fsr.com/pipermail/vision2020/attachments/20051009/46f0559e/attachment-0001.htm
More information about the Vision2020
mailing list