Research, published in the journal Science, analysed the declining extent of Arctic sea ice from 1953 to 2015 and found it tracked the emissions of CO2 from fossil fuel burning and other human activities. The relationship fits well with the underlying physics.
As a result, it is possible to calculate how much Arctic sea ice is lost as a result of an individual’s emissions. The average annual emissions of a citizen of the 35 rich nations in the Organisation for Economic Co-operation and Development (OECD) is 10 tonnes per year, leading to 30 sq m of ice being lost. Citizens of the US, Canada and Australia have a higher carbon footprint – about 16 tonnes – each causing almost 50 sq m of ice loss per year. In the UK, the average emissions are 7.5 tonnes per year, meaning 22.5 sq m of ice loss.
So we should all do our best to reduce our carbon footprint, every little helps.