WMO WDCGG Data Summary reports the annual results of global analyses of greenhouse and some related gas data submitted to WDCGG by contributing organizations.

The latest Data Summary covers monthly mean observational data collected at surface stations and on certain ships for the period from 1968 to 2022 and submitted to WDCGG by September 2023. Observational data and the results of related analysis indicate that mole fractions of major greenhouse gases (CO₂, CH₄, N₂O, SF₆ and certain HCFCs and HFCs) are increasing, while those of certain ozone-depleting substances (e.g., CFCs) are not. The globally averaged mole fractions of CO₂, CH₄ and N₂O reached new highs of 417.9±0.2 ppm, 1923±2 ppb and 335.8±0.1 ppb in 2022, corresponding to 150, 264 and 124% of pre-industrial levels, respectively.

No	Release Date	Details	PDF(EN)/HTML
WDCGG No.48	August 2024	103 pp., analysis based on data submitted by September 2023	PDF(11.2 MB)
WDCGG No.47	August 2023	103 pp., analysis based on data submitted by September 2022	PDF(11.3 MB)
WDCGG No.46	August 2022	105 pp., analysis based on data submitted by September 2021	PDF(10.2 MB)
WDCGG No.45	September 2021	97 pp., analysis based on data submitted by September 2020	PDF(16.3 MB)
WDCGG No.44	November 2020	95 pp., analysis based on data submitted by September 2019 Corrected on 18 March 2021. Please see the errata information for details.	PDF(9.7 MB)
WDCGG No.43	March 2020	91 pp., analysis based on data submitted by September 2018 Corrected on 3 June 2020. Please see the errata information for details.	PDF(9.4 MB)
WDCGG No.42	October 2018	97 pp., analysis based on data submitted by September 2017 Corrected on 19 February 2019. Please see the errata information for details.	PDF(10.4 MB)
WDCGG No.41	March 2017	95 pp., analysis based on data submitted by September 2016 Corrected on 31 August 2018. Please see the errata information for details.	PDF(11.8 MB)
WDCGG No.40	March 2016	134 pp., analysis based on data submitted by November 2015	PDF(20.8 MB)
WDCGG No.39	March 2015	130 pp., analysis based on data submitted by November 2014, except for the greenhouse gas species CO2, CH4, N2O, SF6 and halocarbons, for which the submission period ended in July 2014.	PDF(23.4 MB)
WDCGG No.38	March 2014	116 pp., analysis based on data submitted by November 2013 Corrected on 24 June 2014. Please see the errata information for details.	PDF(19.2 MB)
WDCGG No.37	March 2013	112 pp., analysis based on data submitted by October 2012	PDF(31.7 MB)
WDCGG No.36	March 2012	100 pp., analysis based on data submitted by November 2011	PDF(10.9 MB)
WDCGG No.35	March 2011	98 pp., analysis based on data submitted by November 2010	PDF(9.4 MB)
WDCGG No.34	March 2010	95 pp., analysis based on data submitted by September 2009	PDF(7.5 MB)
WDCGG No.33	March 2009	99 pp., analysis based on data submitted by September 2008	PDF(13.9 MB)
WDCGG No.32	March 2008	95 pp., analysis based on data submitted by September 2007	PDF(15.2 MB)
WDCGG No.31	March 2007	96 pp., analysis based on data submitted by September 2006	PDF(12.9 MB)
WDCGG No.30	March 2006	88 pp., analysis based on data submitted by September 2005	PDF(10.7 MB)
WDCGG No.29	March 2005	85 pp., analysis based on data submitted by December 2004	PDF(14.4 MB)
WDCGG No.28	March 2004	98 pp., analysis based on data submitted by December 2003	HTML
WDCGG No.27	March 2003	92 pp., analysis based on data submitted by September 2002	HTML
WDCGG No.26	March 2002	92 pp., analysis based on data submitted by December 2001	HTML
WDCGG No.22	March 2000	84 pp., analysis based on data submitted by June 1999	HTML
WDCGG No.15	March 1998	223 pp., analysis based on data submitted by January 1998
WDCGG No.8	March 1995	94 pp., analysis based on data in the period from 1972 to 1993

 Animation

The latitude distribution of mole fractions in the figure on the left includes all observational data collected at surface stations and on particular ships for 1984 – 2022 based on monthly mean valid data submitted to WDCGG by September 2023. Values not on the WMO scale are not converted to this scale.
Globally averaged mole fractions in the figure on the right are based on WMO Greenhouse Gas Bulletin No.19 of 2023. The values used are from selected stations as described in the Bulletin.

These animations indicate increasing mole fractions for CO₂, CH₄ and N₂O, with globally averaged figures reaching new greenhouse gas highs of 417.9±0.2 ppm, 1923±2 ppb and 335.8±0.1 ppb in 2022, respectively.

CO2

CH4

N2O

*These animations are not included in the Summary.
All data contribute to analysis on greenhouse gas distribution. See GAW report No. 184 for details of data selection and calculation.