Global emissions have to flatten quickly to limit warming to 1.5C

cumulative emissions since 1960, gigatonnes of CO2

2,500

2,000

Total CO2 emissions since 1960

Carbon budget within which there is a ‘high’ chance of limiting warming to 1.5C

1,500

1,000

500

0

1960

1980

2000

2020

2040

2,500

2,000

Carbon budget within which there is a ‘high’ chance of limiting warming to 1.5C

Total CO2 emissions since 1960

1,500

1,000

500

0

1960

1980

2000

2020

2040