Just years to curb global warming

Without rapid carbon dioxide emission cuts, the world has only a 50% chance of limiting global temperature rises to 1.5°C above preindustrial levels before 2030, according to a new study
 

Global mean temperature increase (degrees Celsius*)

2030-2046 +2.00°C	+2°C
2021-2029 +1.50°C
2000-2020 +0.8°C	+1°C

2020: Second warmest year since 1880.
Just 0.02°C below record of +1.00°C set in 2016

1880-1999 +0.41°C	+0°C

+0.08°C 
Global annual temperature increase per decade since 1880

*land and ocean combined above long-term average


Carbon budget (estimate of CO2 emissions to limit global warming, gigatonnes†) 

1,200
2046 Budget for 50% chance of limiting warming to 2°C will be used up if CO2 emissions remain at current levels
 
250          
2029 Budget for 50% chance of limiting warming to 1.5°C will be exhausted if CO2 emissions remain at 2022 levels of around 40GT per year


†1 gigatonne (GT) is unit of mass equal to 1 billion tonnes


Sources: Imperial College London, Nature, NOAA 
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