National climate facts key

Population = National population data for 2020 Gini index = Distribution of national income across a population. High Gini (poor distribution) can be an indicator of sub-national populations being very vulnerable to climate impacts. (UK = 35.1; USA = 41.4; Norway = 27.6). T CO2eq = Tonnes of carbon dioxide equivalent emissions produced nationally (including all other greenhouse gas emissions), excluding emissions from deforestation. Data from 2018, unless stated otherwise. World CO2eq emissions were 45.87 GT CO2eq (45.87 billion T CO2eq) in 2018. This excludes a very uncertain additional figure of 5.5 GT CO2eq emissions from global deforestation and land use change.