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Lag in rise of CO2

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Apr2-09, 12:40 AM
P: 555
The fact that atmospheric CO2 lagged behind the initial change in climate at the end of past ice ages is a red herring frequently tossed around by global warming skeptics. No scientist that I know believes that changes in CO2 provided the initial cause of glacial-interglacial climate change. Rather, CO2 represents a feedback that amplified
climate change that was triggered by other processes. It was recognized decades ago that insolation alone is likely insufficient to drive the changes in earth’s climate between glacial and interglacial periods. Scientists were looking for a feedback mechanism to
amplify the effects of insolation before the first ice core records revealed that atmospheric CO2 was lower during glacial periods. It seems that CO2 provides that amplifier.
Bob Anderson: March 14,2009


Here is an interesting paper by Dr. Anderson about a new theory on the role of wind:

http://www.sciencemag.org/cgi/conten.../323/5920/1443

Here is a free link that reviews the same topic:

http://chriscolose.wordpress.com/200...cial-co2-rise/


This link is a paper from Nature providing an overview of how CO2 changes:

http://faculty.washington.edu/battis...nBoyle2000.pdf


This link is from 2007, about recent changes in upwelling off the coast of Africa:

http://www.sciencemag.org/cgi/reprint/315/5812/637.pdf


Bottom line: The oceans are the only source of CO2 large enough to naturally
shift atmospheric CO2 concentrations by the amounts recorded during glaciations/de-glaciations. Changes in CO2 caused between 15 to 30% of the temperature change during ice age glaciations/de-glaciations. The initiator and majority of the change was a shift in earths orbit.
Phys.Org News Partner Earth sciences news on Phys.org

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