1. Climate Change 2014: Synthesis Report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change,2014
2. Extension and integration of atmospheric carbon dioxide data into a globally consistent measurement record
3. Climate Change 2007: The Physical Science Basis: Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Chang;Solomon,2007
4. Troubling milestone for CO2
5. The pre-industrial carbon dioxide level