Australia

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Critically Insufficient4°C+ World

NDCs with this rating fall well outside of a country’s “fair share” range and are not at all consistent with holding warming to below 2°C let alone with the Paris Agreement’s stronger 1.5°C limit. If all government NDCs were in this range, warming would exceed 4°C.

Highly insufficient< 4°C World

NDCs with this rating fall outside of a country’s “fair share” range and are not at all consistent with holding warming to below 2°C let alone with the Paris Agreement’s stronger 1.5°C limit. If all government NDCs were in this range, warming would reach between 3°C and 4°C.

Insufficient< 3°C World

NDCs with this rating are in the least stringent part of a country’s “fair share” range and not consistent with holding warming below 2°C let alone with the Paris Agreement’s stronger 1.5°C limit. If all government NDCs were in this range, warming would reach over 2°C and up to 3°C.

2°C Compatible< 2°C World

NDCs with this rating are consistent with the 2009 Copenhagen 2°C goal and therefore fall within a country’s “fair share” range, but are not fully consistent with the Paris Agreement long term temperature goal. If all government NDCs were in this range, warming could be held below, but not well below, 2°C and still be too high to be consistent with the Paris Agreement 1.5°C limit.

1.5°C Paris Agreement Compatible< 1.5°C World

This rating indicates that a government’s NDCs in the most stringent part of its “fair share” range: it is consistent with the Paris Agreement’s 1.5°C limit.

Role model<< 1.5°C World

This rating indicates that a government’s NDC is more ambitious than what is considered a “fair” contribution: it is more than consistent with the Paris Agreement’s 1.5°C limit.

Global Warming Potentials

Previous assessments of the Climate Action Tracker used the global warming potentials (GWPs) from the IPCC’s Second Assessment Report (SAR). For this assessment, we have updated all figures and time series to GWPs from the Fourth Assessment Report (AR4).

Historical emissions

Historical data were obtained from the UNFCCC GHG inventory (UNFCCC, 2018).

Pledge

Targets for 2030 were calculated using CRF 2018 data that is converted from AR4 into SAR by our scientific collaborator, the Potsdam Institute for Climate Impact Research (PIK). For a detailed description on the assumptions used regarding base year emissions, emissions data sources, LULUCF accounting rules supporting this analysis please consult our Australia report.

Current policy projections

The current policy projection is based on the Australia’s December emissions projections 2017. The CAT always provides current policy projections excluding LULUCF. To this end, we subtracted the projections provided for LULUCF.

For the purposes of this analysis growth rates were applied onto the historical CRF 2018 data.