Methodological issues under the Convention Common metrics to calculate the carbon dioxide equivalence of greenhouse gases Open English PDF 0.02 MB Symbol SBSTA51.DT.i10d Publication date 04 Dec 2019 Document type Draft negotiating texts Conference UN Climate Change Conference - December 2019 Session SBSTA 51 Author UNFCCC. Subsidiary Body for Scientific and Technological Advice (SBSTA) Topic GHG inventories Agenda item SBSTA 51 10 (d). Common metrics to calculate the carbon dioxide equivalence of greenhouse gases