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How much greenhouse gas will be emitted globally, in the calendar year 2030, in gigatonnes of CO₂ equivalent?

At the Paris climate conference (COP21) in December 2015, 195 countries adopted the first-ever universal, legally binding global climate deal. One of the key elements of the Paris agreement is global average temperature targeting:

Governments agreed to reduce emissions: with a long-term goal of keeping the increase in global average temperature to well below 2°C above pre-industrial levels, and to aim to limit the increase to 1.5°C, since this would significantly reduce risks and the impacts of climate change.

The annual UN Environment Emissions Gap Report presents an assessment of current national mitigation efforts and the ambitions countries have presented in their Nationally Determined Contributions, which form the foundation of the Paris Agreement. It also identifies the trajectory of annual greenhouse gas emissions consistent with achieving the mean global average temperature levels targeted by the Paris Agreement.

According to its 2018 scenario estimates, the trajectory required to achieve the 2°C target with a 66% chance is one in which emissions of all GHGs should not exceed 40 (range 38–45) gigatonnes of CO₂ equivalent (GtCO₂e) in the year 2030. It provides a snapshots for the year 2030 of the relevant abatement paths:

  • 40 GtCO₂e (90% CI: 38–45) emitted in 2030 is consistent with path that achieves below 2.0°C temperature rise in 2100 (66% chance)
  • 34 GtCO₂e (90% CI: 30–40) emitted in 2030 is consistent with path that achieves below 1.8°C temperature rise in 2100 (66% chance)
  • 24 GtCO₂e (90% CI: 22–30) emitted in 2030 emitted in 2030 is consistent with path that achieves below 1.5°C temperature rise in 2100 (66% chance)

How much GHG will be emitted globally in the calendar year 2030, in gigatonnes of CO₂ equivalent?


This question resolves as the amount of global GHG emissions in gigatonnes of CO₂ equivalent emitted in the calendar year 2030, according to credible estimates, such as those reported by the World Bank. Other sources of data on global emissions may be used, provided it estimates are <25% removed from those displayed by the World Bank for the 2009 to 2012 period.


World Bank data can be accessed here. Please make a copy by clicking "file" and then "make a copy" if you wish to edit it. If you make useful additions to the dataset, please share the file in the comments.

*Carbon dioxide equivalency (CO₂e) describes, for a given mixture and amount of greenhouse gases, the amount of CO2 that would have the same global warming ability, when measured over a specified time period. For our purposes, greenhouse gas emissions are the sum of the basket of greenhouse gases listed in Annex A to the Kyoto Protocol, expressed as CO2e assuming a 100-year global warming potential.


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