The Climate Action Tracker

What is CAT?

The Climate Action Tracker is an independent scientific analysis that tracks government climate action and measures it against the globally agreed Paris Agreement aim of "holding warming well below 2°C, and pursuing efforts to limit warming to 1.5°C." A collaboration of two organisations, Climate Analytics and New Climate Institute, the CAT has been providing this independent analysis to policymakers since 2009.

CAT quantifies and evaluates climate change mitigation targets, policies and action. It also aggregates country action to the global level, determining likely temperature increases during the 21st century using the MAGICC climate model. CAT further develops sectoral analysis to illustrate required pathways for meeting the global temperature goals.

CAT tracks 39 countries and the EU 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 climate policies and action 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 NDCs on national emissions over the time period to 2030, and where possible beyond.
  • Comparability of effort against countries’ fair share and modelled domestic pathways: Whether a government is doing its “fair share” compared with others towards the global effort to limit warming consistent with the Paris Agreement , and whether its mitigation efforts on its own territory are in line with global least cost pathways.

CAT calculates global warming consequence and emissions gaps

The Climate Action Tracker assesses the total global effort of 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 the carbon-cycle / climate model MAGICC .
  • Emissions Gap: The gap in 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 NDCs, pledges and current policies.

Funding sources

The Climate Action Tracker is made possible due to generous support from foundations and governments, including the European Climate Foundation (aviation, shipping, Thailand, Iran, Nigeria, Colombia, Germany, UK, Vietnam, Kenya, governments reactions to the COVID-19 pandemic and climate governance) and the German Ministry for Environment, Nature Conservation and Nuclear Safety (BMU) via the International Climate Initiative (other elements).

Past consortium members have included the Potsdam Institute for Climate Impact Research (2009–2016) and Ecofys, a Navigant company (2009–2019).

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