CO₂ emissions from transport

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About this data

CO₂ emissions from transport
Emissions are measured in tonnes.
Climate Watch (2023) – with major processing by Our World in Data
Last updated
October 31, 2023
Next expected update
October 2024
Date range

Sources and processing

This data is based on the following sources

Climate Watch Historical Emissions data contains sector-level greenhouse gas (GHG) emissions data for 194 countries and the European Union for the period 1990-2020, including emissions of the six major GHGs from most major sources and sinks. Non-CO₂ emissions are expressed in CO₂ equivalents using 100-year global warming potential values from the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report.

More information about their data sources and methodology can be found in their FAQ page. Specifically, the definitions of all Climate Watch data sectors and their methodology are explained in this document.

Retrieved on
October 31, 2023
This is the citation of the original data obtained from the source, prior to any processing or adaptation by Our World in Data. To cite data downloaded from this page, please use the suggested citation given in Reuse This Work below.
Climate Watch. 2022. Washington, DC: World Resources Institute (WRI). Available online at:
Climate Watch data are derived from several sources.
  • Data on land-Use change and forestry, and agriculture, are sourced from the Food and Agriculture Organization of the United Nations, FAOSTAT Emissions Database.
  • Data on greenhouse gas emissions from fuel combustion are sourced from the OECD/IEA.

How we process data at Our World in Data

All data and visualizations on Our World in Data rely on data sourced from one or several original data providers. Preparing this original data involves several processing steps. Depending on the data, this can include standardizing country names and world region definitions, converting units, calculating derived indicators such as per capita measures, as well as adding or adapting metadata such as the name or the description given to an indicator.

At the link below you can find a detailed description of the structure of our data pipeline, including links to all the code used to prepare data across Our World in Data.

Read about our data pipeline

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  • All data produced by third-party providers and made available by Our World in Data are subject to the license terms from the original providers. Our work would not be possible without the data providers we rely on, so we ask you to always cite them appropriately (see below). This is crucial to allow data providers to continue doing their work, enhancing, maintaining and updating valuable data.
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How to cite this page

To cite this page overall, including any descriptions, FAQs or explanations of the data authored by Our World in Data, please use the following citation:

“Data Page: CO₂ emissions from transport”, part of the following publication: Hannah Ritchie, Pablo Rosado and Max Roser (2023) - “CO₂ and Greenhouse Gas Emissions”. Data adapted from Climate Watch. Retrieved from [online resource]
How to cite this data

In-line citationIf you have limited space (e.g. in data visualizations), you can use this abbreviated in-line citation:

Climate Watch (2023) – with major processing by Our World in Data

Full citation

Climate Watch (2023) – with major processing by Our World in Data. “CO₂ emissions from transport” [dataset]. Climate Watch, “Greenhouse gas emissions by sector” [original data]. Retrieved July 14, 2024 from