Copenhagen Accord pledges are paltry

J. Rogelj, J. Nabel, C. Chen, W. Hare, K. Markmann, M. Meinshausen, M. Schaeffer, K. Macey, N.E. Hoehne

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Abstract

Nations will probably meet only the lower ends of their emissions pledges in the absence of a binding international agreement Nations can bank an estimated 12 gigatonnes of Co2 equivalents surplus allowances for use after 2012 Land-use rules are likely to result in further allowance increases of 0.5 GtCO2-eq per year Global emissions in 2020 could thus be up to 20% higher than today Current pledges mean a greater than 50% chance that warming will exceed 3°C by 2100 If nations agree to halve emissions by 2050, there is still a 50% chance that warming will exceed 2°C and will almost certainly exceed 1.5°C
Original languageEnglish
Pages (from-to)1126-1128
JournalNature
Volume464
DOIs
Publication statusPublished - 2010

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Rogelj, J., Nabel, J., Chen, C., Hare, W., Markmann, K., Meinshausen, M., ... Hoehne, N. E. (2010). Copenhagen Accord pledges are paltry. Nature, 464, 1126-1128. https://doi.org/10.1038/4641126a