Global Warming

fifthcolumn · Post by **fifthcolumn** » 02 Nov 2009, 18:26

According to some Swedish researcher, we're at a point in history unprecedented where human emissions are reversing what would have otherwise been global cooling.

Do we really want to be cutting emissions?

snow hope · Post by **snow hope** » 02 Nov 2009, 23:24

This kind of post needs a link.

But to try and answer the question, it depends on whether you think it is okay for homo sapiens to try and reverse the direction of spin of the earth! Personally, I don't think it is.

I'm for adaption.

Mind you if I lived in Canada, which has snow on the gound for 5 or 6 months a year, I might be more inclined to agree with your new viewpoint!

RenewableCandy · Post by **RenewableCandy** » 03 Nov 2009, 14:10

That might explain why the average Canadian, with their genuine love of all things Nature, drives around in a SUV with freshly-installed patio-heater on top

What it fails to explain is why the average Aussie does the same

fifthcolumn · Post by **fifthcolumn** » 03 Nov 2009, 19:42

snow hope wrote:This kind of post needs a link.

linky: (from "Science" journal)
http://www.sciencemag.org/cgi/content/a ... /5945/1236

Recent Warming Reverses Long-Term Arctic Cooling
Darrell S. Kaufman,1,* David P. Schneider,2 Nicholas P. McKay,3 Caspar M. Ammann,2 Raymond S. Bradley,4 Keith R. Briffa,5 Gifford H. Miller,6 Bette L. Otto-Bliesner,2 Jonathan T. Overpeck,3 Bo M. Vinther,7 Arctic Lakes 2k Project Members

The temperature history of the first millennium C.E. is sparsely documented, especially in the Arctic. We present a synthesis of decadally resolved proxy temperature records from poleward of 60°N covering the past 2000 years, which indicates that a pervasive cooling in progress 2000 years ago continued through the Middle Ages and into the Little Ice Age. A 2000-year transient climate simulation with the Community Climate System Model shows the same temperature sensitivity to changes in insolation as does our proxy reconstruction, supporting the inference that this long-term trend was caused by the steady orbitally driven reduction in summer insolation. The cooling trend was reversed during the 20th century, with four of the five warmest decades of our 2000-year-long reconstruction occurring between 1950 and 2000.