The Global Carbon Dioxide Emissions By Year

The Global Carbon Dioxide Emissions By Year

The Global Carbon Project released it’s Global Carbon Budget 2021 in November 2021, and it came to the following conclusions:

Over 277 parts per million (ppm) of CO2 were present in the atmosphere on average around the world in 1750. By 2020, that number had risen to 414 ppm (up 49 percent )

Global CO2 emissions from fossil fuels fell by 5.4 percent to 34.8 GtCO2 in 2020 from 36.7 GtCO2 in 2019.

Global CO2 emissions from fossil fuels are anticipated to increase by 4.9 percent in 2021 to 36.4 GtCO2, which is 0.8 percent less than the level in 2019. (The 1.6 GtCO2 increase in 2021 is comparable to the growth seen in 2010 following the 2008–2009 global financial crisis: 1.7 GtCO2, or 5.5 percent above 2009 levels.)

Following an exceptional decline in 2020, global fossil CO2 emissions are expected to bridge the gap with pre-COVID levels in 2021. Oil consumption continues to result in lower emissions than in 2019, but emissions from the use of coal and gas are expected to increase in 2021 rather than decrease.

In 2020, emissions dropped by a record-breaking 1.9 billion tonnes of CO2 (GtCO2), or -5.4 percent, from 36.7 GtCO2 in 2019 to 34.8 GtCO2. In 2021, emissions are anticipated to increase by 4.9 percent (4.1 percent to 5.7 percent), reaching 36.4 GtCO2.

Global emissions in 2021 are still 0.8% lower than they were in 2019. The 1.6 GtCO2 increase in 2021 is comparable to the growth seen in 2010 after the 2008–2009 global financial crisis (1.7 GtCO2; 5.5 percent above 2009 levels).

                 Annual Global CO2 Emissions (2011-2021)*

                               2021 Global Carbon Budget (November 2021)

                                                 Gigatonne (Gt) is equal to one billion tonnes.

Fuel* (Gt)
Land Use
Change (Gt)

Total* (Gt)
2021  36.4* 4.9 36.7
2020 34.8 3.2 38.0
2019 36.7 3.8 40.5
2018 36.6 3.9 40.5
2017 35.9 3.7 39.6
2016 35.5 3.7 39.2
2015 35.5 4.8 40.3
2014 35.5 4.6 40.1
2013 35.3 4.3 39.6
2012 35.0 4.7 39.7
2011 34.5 4.8 39.3

national emissions + global statistics + data supplement

(1) GtCO2 values in the above table were computed using CO2.

When calculating total emissions for the planet Earth, carbon emissions in the linked Excel data file are multiplied                    by 3.664 and added to emissions from fossil fuels and land-use change.

(2) Cement carbonation is not affected by sinks due to fossil fuel emissions.

(3) Projected global fossil fuel emissions for 2021

2021 Global Carbon Budget

The information below provides an overview of all human-caused CO2 emission sources and worldwide sinks (where the CO2 goes). The figures show the yearly average over a ten-year period (2011 to 2020). The Global Carbon Project‘s Global Carbon Budget 2021 was released on November 5, 2021, and contains the data.

Co2 Emissions from Human Activity Worldwide

When fossil fuels that have been stored in the Earth’s crust for a long time are burned, the majority of CO2 emissions into the atmosphere that is generated by humans occur. Only a minor portion of all fossil fuels come through the use of fresh cement.

The Location of CO2 Emissions

The terrestrial biosphere and oceans absorbed around 55 percent of global emissions between 2011 and 2020. The remaining parts were added to the atmosphere’s growing CO2 concentration. Continuous rises in the atmospheric CO2 concentration have been seen to be caused by this accumulation.

Budget Stabilization

The figures for the global carbon budget listed above were determined using the most accurate scientific data at the time they were published. The estimated global sources and sinks are 3 percent (-1.0 GtCO2/yr) out of equilibrium, according to scientists. For details on the data reporting procedures and uncertainties, consult Friedlingstein et aldata .’s description paper, Global Carbon Budget 2021.

Emissions Gap Reports from UNEP

“according to The Emissions Gap Report 2021, the World Is on Track for An Increase in Global Temperature of 2.7°c by The End of The Century Notwithstanding New National Climate Commitments and Other Mitigation Actions. that Would Result in Drastic Changes to The Earth’s Climate and Is Much Above the Targets of The Paris Climate Pact. in Order to Achieve the Paris Agreement’s Aspirational Target of Keeping Global Warming Below 1.5°c This Century, Annual Greenhouse Gas Emissions Must Be Cut in Half During the Next Eight Years.”

2021 UNEP Emissions Gap Report (web: Oct 26, 2021)

The Most Recent UNEP Emissions Gap Report States that 55 Percent Is Required to Achieve the 1.5°c Paris Objective, New and Updated Nd Cs only Reduce Expected 2030 Emissions by 7.5 Percent.

— UNEP Press Statement (web: Oct 26, 2021)

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