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 About WDCGG

The World Data Centre for Greenhouse Gases (WDCGG) is a World Data Centre (WDC) operated by the Japan Meteorological Agency (JMA) under the Global Atmosphere Watch (GAW) programme of the World Meteorological Organization (WMO). WDCGG collects, archives and distributes data provided by contributors on greenhouse gases (such as CO2, CH4, CFCs, N2O) and related gases (such as CO) in the atmosphere and elsewhere.

This website is operated by the JMA in collaboration with WMO.

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 Data Archive

The WDCGG data archive provides observation data on greenhouse gases and related gases along with basic associated information known as metadata.

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This website has a user registration function to help support contributors.

Many contributors face difficulties with ongoing monitoring due to economic and other limitations. Information on the timing and usage of data provided may help to validate the effectiveness of such work.

This information can also be used to improve services provided to users and contributors and to facilitate the fair use of data.

Against this background, WDCGG kindly invites users to register. User registration is free and easy, and is required for data file downloads.

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Contributors are institutes or organizations that collect and submit observation data.

 List of Contributors

To submit data, refer to the WDCGG Data Submission Manual and sign up for an account. We look forward to working with you.


WDCGG follows the GAW Data Policy, which is applied to all users.

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 WMO Greenhouse Gas Bulletin

The WMO Greenhouse Gas Bulletin reports on the latest trends and atmospheric burdens of the most influential long-lived greenhouse gases - carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) - and provides a summary of contributions from other greenhouse gases.

The latest WMO Greenhouse Gas Bulletin (No.19) was issued on 15 November 2023.
Observation data in the bulletin were provided by contributors around the world and archived/distributed by WDCGG.

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Information in the WDCGG data archive is provided by 131 contributors, including 74 data submitters.

The WDCGG website is supported by numerous open-source and commercial tools.
Some of the maps on the site were created using the Generic Mapping Tools open-source program (GMT; Wessel, P., W. H. F. Smith, R. Scharroo, J. Luis, and F. Wobbe, Generic Mapping Tools: Improved Version Released, EOS Trans. AGU, 94(45), p. 409-410, 2013. doi:10.1002/2013EO450001.).


The seven GAW World Data Centres (WDCs) archive one or more GAW observation parameters or types as administered by individual host institutions.

World Ozone and Ultraviolet Data Centre (WOUDC), Canada
World Data Centre for Precipitation Chemistry (WDCPC), USA
World Data Centre for Aerosols (WDCA), Norway
World Data Centre for Reactive Gases (WDCRG) , Norway
World Radiation Data Centre (WRDC), Russian Federation
World Data Centre for Remote Sensing of the Atmosphere (WDC-RSAT), Germany

See what's new in WDCGG. Also refer to "Data Update Information."
15 Nov. 2023
WMO Greenhouse Gas Bulletin No. 19 is released.

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Welcome to WDCGG!

ATTENTION Operation information page provides service status and maintenance information for the WDCGG website. If an error is displayed on the WDCGG website, please check the status on the page.

ATTENTION Reactive gases measurement data (except for CO) have been agreed to be transferred under the responsibility of the newly established GAW World Data Centre for Reactive Gases (WDCRG) hosted by the Norwegian Institute for Air Research (NILU).
Reactive gas data submitted to WDCGG before 1 January 2016 have been migrated to WDCRG.