What is CAT?
The Climate Action Tracker (CAT) is an independent scientific analysis produced by three research organisations tracking climate action since 2009. We track progress towards the globally agreed aim of holding warming well below 2°C, and pursuing efforts to limit warming to 1.5°C.
CAT quantifies and evaluates climate change mitigation commitments, and assesses, whether countries are on track to meeting those. It then aggregates country action to the global level, determining likely temperature increase by the end of the century. CAT also develops sectoral analysis to illustrate required pathways for meeting the global temperature goals.
CAT tracks 32 countries covering around 80% of global emissions
CAT covers all the biggest emitters and a representative sample of smaller emitters covering about 80% of global emissions and approximately 70% of global population. The national actions we track are:
- Effect of current policies on emissions: The policies a government has implemented or enacted and how these are likely to affect national emission over the time period to 2030, and where possible beyond.
- Impact of pledges, targets and (I)NDCs on national emissions over the time period to 2030, and where possible beyond.
- Fair share and comparability of effort: Whether a government is doing its “fair share” compared with others towards the global effort to limit warming consistent with the Paris Agreement.
CAT calculates global warming consequence and emissions gaps
The Climate Action Tracker assesses the total global effort of (I)NDCs, pledges and current policies on:
- Global warming over the 21st century. Global emissions pathways consistent with government actions are analyzed and climate consequences projected using a carbon-cycle / climate model (MAGICC).
- Emissions Gap: The gap in 2020, 2025 and 2030 between the emissions levels needed to limit warming below a 2°C increase above pre-industrial levels (and to bring warming below 1.5°C by 2100) and the emissions that are projected to result from (I)NDCs, pledges and current policies.
CAT constantly expands its analysis to adjust to the political landscape.
- Can countries do more? Comparison of (I)NDCs and current policies to emission reduction potentials based on a literature review and additional economic analysis.
- Tracking decarbonisation progress: Comparison of (I)NDCs and current policies with national and sectoral decarbonisation rates consistent with the Paris Agreement.
The Climate Action Tracker is made possible due to generous support from the ClimateWorks Foundation and the German Ministry for Environment, Nature Conservation and Nuclear Safety (BMU) via the International Climate Initiative. Past supporters include the European Climate Foundation and the Children’s Investment Fund Foundation.
Past consortium members have included the Potsdam Institute for Climate Impact Research (2009–2016).