Canada's Population Share Emission Gaps

The limit on the amount of CO2 that the atmosphere can safely contain is known as the carbon budget. There will be different limits depending upon the maximum global temperature increase that is acceptable.

How long before Canada uses up its population-based share of the carbon budget?

Canada used up our population-based share of the global carbon budget for a 66% chance of keeping global temperatures from rising above 1.5C before 2014. Our share is 2,000 MtCO2 but our cumulative emissions were 2,270 MtCO2 by 2014.

If Canada follows our current targets we will exceed our share (based on our share of the global population) of the global carbon budget for keeping global temperature increases less than 2C before 2020.

A comparison of possible population-based share targets

This table compares our current emission reduction targets with what they should be to if we want to remain under our population-based share of the carbon budgets for keeping global temperature increases below 2C.

Current targets
Below 2C
2020 17% 63%
2025   100%
2030 30%  
2050 80%