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Polar Bears Survived the Ice Free Arctic

Posted By admin On July 15, 2010 @ 4:32 am In Sci Tech | Comments Disabled

Steve Goddard
Watts Up With That? [1]
July 15, 2010

In part two of Dr. Meier’s post [2] , he mentioned :

“Examination of several proxy records (e.g., sediment cores) of sea ice indicate ice-free or near ice-free summer conditions for at least some time during the period of 15,000 to 5,000 years ago”

WUWT Reader David Penny astutely noted the implication that Polar Bears must have already survived an ice free Arctic in the not too distant past. According to Wikipedia [3] :

…the polar bear diverged from the brown bear, Ursus arctos, roughly 150,000 years ago

That must mean it is OK to take Polar Bears of the endangered species list. But the decision to put them on the list never had anything to do with science anyway.

The other implication of Dr. Meier’s statement is that a warmer, ice free Arctic occurred when CO2 levels were less than 290 ppm. This implies that there is no long term correlation between CO2 and Arctic temperatures.

Conversely, there was an ice age during the Ordovician 450 million years ago, when CO2 levels were 10X higher than today

Polar Bears Survived the Ice Free Arctic [4]

http://ff.org/centers/csspp/library/co2weekly/2005-08-18/dioxide_files/image002.gif [5]

Conclusion: There is no evidence that Arctic warming over the last 30 years has anything to do with CO2. If it were CO2 causing it, we would see warming at both poles.

Polar Bears Survived the Ice Free Arctic 260310banner2 [6]


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URLs in this post:

[1] Watts Up With That?: http://wattsupwiththat.com/2010/07/15/polar-bears-survived-the-ice-free-arctic/

[2] two of Dr. Meier’s post: http://wattsupwiththat.com/2010/07/14/nsidcs-dr-walt-meier-part-2

[3] According to Wikipedia: http://en.wikipedia.org/wiki/Polar_bear

[4] Image: http://climateinsiders.files.wordpress.com/2010/07/image002.gif

[5] http://ff.org/centers/csspp/library/co2weekly/2005-08-18/dioxide_files/image002.gif: http://ff.org/centers/csspp/library/co2weekly/2005-08-18/dioxide_files/image002.gif

[6] Image: http://purewaterfreedom.com/

[7] Scientists say polar bears have survived climate change before: http://www.prisonplanet.com/scientists-say-polar-bears-have-survived-climate-change-before.html

[8] Penguins, Polar Bears, Glaciers, Arctic Ice All Thriving: http://www.prisonplanet.com/penguins-polar-bears-glaciers-arctic-ice-all-thriving.html

[9] Eco-Zealots In Overdrive: Let’s Kill The Polar Bears: http://www.prisonplanet.com/eco-zealots-in-overdrive-let%e2%80%99s-kill-the-polar-bears.html

[10] Population Of Polar Bears “Booming”; More Now Than 30 Years Ago: http://www.prisonplanet.com/population-of-polar-bears-booming-more-now-than-30-years-ago.html

[11] More “Global Warming Is Killing Polar Bears” Propaganda: http://www.prisonplanet.com/more-global-warming-is-killing-polar-bears-propaganda.html

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