There have been some extremely deep ice cores taken in Antarctica at Dome C that go back 800,000 or 900,000 years. I understand that the Dome C record shows very clearly that we've got more CO2 in our atmosphere now than at any time in 800,000 years.Read the entire article at the link above. And then sit dowm and weep - not necessarily in Grand Central Station. Once you've expressed your anger and sorrow, write the Honorable Stephen Harper and demand that he revise Canada's climate change policies . Check out Transition Towns and work on an energy descent plan for your local community. Push your pension plan to de-invest in companies that commit ecocide - like BP. Revamp your RRSP holdings - click on the Corporate, Environmental and Social Responsibility link on my blogroll to vet a company. Educate other people. Make social connections. Eat local food. Devote your time, money , and energy to any cause that makes the world better - like http://www.350.org/.
Mosley-Thompson: Oh yeah. Very clearly. If you look back over the eight glacial/interglacial cycles, you essentially see that CO2 never rises above 300 parts per million and we're at about 389 now. Methane never rises above about 800 parts per billion, and I think we're at about 1,700 parts per billion. So we're clearly outside the range of natural variability. I personally think that graph simply showing the natural fluctuations in those two important greenhouse gases, over almost a million years of Earth history — and then you see the two dots [today] that are so much higher than anything that we see in that near-million history — tells us very clearly that we have a serious problem.
Tuesday, May 4, 2010
Ice Core Records for the Last 800,000 Years