Worldwide coal- and oil-production from 1700 until 2000, in GtCO2 / year (from: "Sustainable Energy — without the hot air", von D. J.C. MacKay, 2009). |
CO2-concentration (in "parts per million") in the atmosphere during the last 1100 years. The data are from ice cores (until 1977), and from direct recordings on Hawaii (since 1958) (from: "Sustainable Energy — without the hot air", von D. J.C. MacKay, 2009). |
Global temperature change since 1850: Recorded values, and simulation results from 2 current simulation models. (from: "Copenhagen Diagnosis", 2009). |