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Fossil carbon dioxide emissions, world (Global Carbon Budget)

Carbon dioxide released each year since 1959 by burning fossil fuels, making cement and other industrial processes, minus the carbon dioxide that cement takes back up as it ages. This is the Global Carbon Budget's headline fossil emissions value.

Latest value

37.8Gt CO₂/yr

World, 2024. Version 2025 v1.0.

Fossil carbon dioxide emissions, world (Global Carbon Budget) (billion tonnes of carbon dioxide per year)

66 values from 1959 to 2024.
Show as a table
Fossil carbon dioxide emissions, world (Global Carbon Budget), every value
PeriodValue (Gt CO₂/yr)Status
19598.8final
19609.3final
19619.4final
19629.7final
196310.2final
196410.8final
196511.2final
196611.8final
196712.2final
196812.8final
196913.7final
197014.8final
197115.4final
197216.1final
197317.0final
197416.9final
197516.9final
197617.7final
197718.2final
197818.9final
197919.4final
198019.2final
198118.7final
198218.6final
198318.7final
198419.3final
198520.0final
198620.3final
198720.9final
198821.7final
198922.0final
199022.5final
199123.0final
199222.3final
199322.5final
199422.7final
199523.3final
199624.0final
199724.1final
199824.0final
199924.5final
200025.2final
200125.4final
200225.9final
200327.3final
200428.2final
200529.2final
200630.2final
200731.0final
200831.6final
200931.0final
201032.8final
201133.9final
201234.3final
201334.6final
201434.8final
201534.7final
201634.7final
201735.3final
201836.0final
201936.3final
202034.4final
202136.0final
202236.7final
202337.3final
202437.8final
Calculated by Environment Dashboard from Global Carbon Project data: Supplemental data of Global Carbon Budget 2025 (Version 1.0), ICOS Carbon Portal, doi:10.18160/GCP-2025, CC BY 4.0. Friedlingstein et al. (2026), Global Carbon Budget 2025, Earth Syst. Sci. Data 18, 3211–3288, doi:10.5194/essd-18-3211-2026. Changes: cement carbonation sink subtracted from fossil emissions; converted from billion tonnes of carbon to billion tonnes of carbon dioxide (× 3.664). CC BY 4.0 (ICOS CCBY4 Data Licence).

Where it comes from

Producer
Global Carbon Project · Global Carbon Budget 2025: global sources and sinks of carbon dioxide
Version
2025 v1.0
Fetched
2026-10-04 (automatically), 480,363 bytes
Fingerprint
sha256 a928cf06c57576b66761d1fec8224c9a41a781eb63442afc03ba902858dd64a9ETag "d62ae19e36bfa4d1" · Last-Modified Sun, 17 May 2026 16:23:09 GMT
Copies
No Wayback copy recorded yet.Our copy of the exact file
Cite the producer
Global Carbon Project. (2026). Supplemental data of Global Carbon Budget 2025 (Version 1.0) [Data set]. Global Carbon Project. https://doi.org/10.18160/gcp-2025

What was done to it

  1. Read the sheet 'Global Carbon Budget' of Global_Carbon_Budget_2025_v1.0.xlsx (Global Carbon Budget 2025 v1.0, ICOS object qSjPBsV1drZnYdH-yCJMmkGn): one row per year 1959–2024, in billion tonnes of carbon per year. Sinks are positive numbers in the sheet and stay positive here.

    Code: pipeline/src/envdash/transforms/emissions/gcb_global.py · code sha256 63ef45577c93e407… · inputs a928cf06c575…

  2. Checked the sheet's definition of the budget imbalance on every year: fossil emissions plus land-use change emissions, minus atmospheric growth, ocean sink, land sink and cement carbonation sink, equals the imbalance column (largest difference 3.3e-14 GtC/yr). This confirms that the fossil column is before the cement carbonation sink is subtracted.

    Code: pipeline/src/envdash/transforms/emissions/gcb_global.py · code sha256 63ef45577c93e407… · inputs a928cf06c575…

  3. Subtracted the cement carbonation sink from fossil emissions (excluding carbonation) for each year, which gives the Global Carbon Budget's headline fossil value.

    Code: pipeline/src/envdash/transforms/emissions/gcb_global.py · code sha256 63ef45577c93e407… · inputs a928cf06c575…

  4. Converted from billion tonnes of carbon to billion tonnes of carbon dioxide by multiplying by 3.664, the factor the sheet states ("multiply the numbers below by 3.664"), with exact decimal arithmetic on the stored values.

    Code: pipeline/src/envdash/transforms/emissions/gcb_global.py · code sha256 63ef45577c93e407… · inputs a928cf06c575…

What it covers

Geography
World
Land use, land-use change and forestry
excluded
Basis
Carbon dioxide from fossil fuels and industry, net of the cement carbonation sink.
Unit
billion tonnes of carbon dioxide per year (Gt CO₂/yr)