According to Climate Watch data, in 2020 the world produced 47.5 gigatons of carbon dioxide equivalent (Gt CO2e) in greenhouse gas emissions, with 75% originating from the energy sector (35.48 Gt CO2e).
Then, 12% of global greenhouse gas emissions in 2020 came from the agriculture sector (5.87 Gt CO2e), 6.6% from industrial processes (3.13 Gt CO2e), 3.5% from waste (1.65 Gt CO2e), and 2.9% from land use and forestry (1.39 Gt CO2e).
Cumulatively, global greenhouse gas emissions in 2020 decreased by 4.8% compared to 2019.
This emission reduction was due to the Covid-19 pandemic situation, which triggered restrictions on industrial activities and public mobility in various parts of the world.
"Reduced oil consumption in the transportation sector contributed more than 50% of the total reduction in global emissions in 2020," said the International Energy Agency (IEA) in its report *CO2 Emissions in 2020*.
However, according to the latest IEA data, in the last two years emissions from the energy sector and global industrial activities have increased again, along with the easing of the pandemic.
"Carbon dioxide emissions from global energy combustion and industrial processes increased in 2022, reaching a new all-time high," said the IEA in its report *CO2 Emissions in 2022*.