A massive outpouring of carbon dioxide from the deep ocean may have helped end the last ice age, scientists report today.
There is strong evidence that changes in Earth's orbit set the pace of the planet's ice ages, by altering how much sunlight reaches the Northern Hemisphere. Yet, carbon dioxide levels in the atmosphere also wobble with the advance and retreat of massive ice sheets, according to observations of ice cores and old ocean sediments. Carbon dioxide levels are lower during an ice age and higher when an ice age ends.
Now, scientists have documented a source for the massive exhalations of potent climate-altering gas seen at the end of the last ice age, about 16,000 years ago. [Photos: The 8 Coldest Places on Earth]
"The oceans are leaking carbon dioxide to the atmosphere," said study co-author Gavin Foster from the University of Southampton in the United Kingdom.
HA, and that massive outpouring of CO2 from the ocean at the end of the last glacial maximum couldn’t possibly have helped end the last ice age …. given the fact their aforesaid CO2 didn’t start outpouring until about 16,000 years ago …… which was about 7,000 years after the glacial ice began rapidly melting.
And “YES”, CO2 levels in the atmosphere should have wobbled up n’ down with the advance and retreat of massive ice sheets.
“DUH”, that “up n’ down” wobbling of atmospheric CO2 is a simple FACT of science.
The “advance” of those massive ice sheets is accompanied by a decrease in the temperature of the ocean water ….. which causes a massive “sucking” (ingassing) of CO2 out of the atmosphere.
And conversely, ….. the “retreat” of those massive ice sheets is accompanied by an increase in the temperature of the ocean water ….. which causes a massive “leaking” (outgassing) of CO2 out of the ocean water into the atmosphere.
See "time-line" proxy graph of the melting of those massive ice sheets via this "link", to wit: