CO2 - 450,000 Years of History - Swivel

This scatter plot depicts carbon dioxide (CO2) concentration in parts-per-million by volume (ppmv) of Vostok Ice Core samples. The historical atmospheric record captured in the ice goes back 450,000 years before present (BP). As shown, CO2 peaks near 300 ppmv, but more recently CO2 has increased "from about 278 ppmv to 378.9 ppmv in 2005, the highest level on record" according to the The San Francisco Chronicle. They further state that "if carbon dioxide levels reach 560 parts per million by 2060 as projected, temperatures could increase by 12 degrees Fahrenheit above pre-industrial global temperatures."

450,000 Years of History - Swivel