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Since 2006, WMO has published annual Greenhouse Gas Bulletins. These Bulletins report on the latest atmospheric abundances and rates of change for the main long-lived greenhouse gases (LLGHGs) – carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) – and provide a summary of contributions from other greenhouse gases.
Detailed data from the latest WMO Greenhouse Gas Bulletin, including csv data files, are available on Current State of GHGs.

No Release Date Details PDF (EN) Contributor
/Station
No.19 15 November 2023 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2022 WMO website  list
No.18 26 October 2022 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2021 WMO website  list
No.17 25 October 2021 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2020 WMO website  list
No.16 23 November 2020 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2019 WMO website  list
No.15 25 November 2019 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2018 WMO website  list
No.14 22 November 2018 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2017 WMO website  list
No.13 30 October 2017 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2016 WMO website  list
No.12 24 October 2016 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2015 WMO website  list
No.11 9 November 2015 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2014 WMO website  list
No.10 6 November 2014 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2013 WMO website  list
No.9 6 November 2013 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2012 WMO website  list
No.8 19 November 2012 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2011 WMO website  list
No.7 21 November 2011 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2010 WMO website  list
No.6 24 November 2010 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2009 WMO website  list
No.5 23 November 2009 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2008 WMO website  list
No.4 14 November 2008 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2007 WMO website  list
No.3 23 November 2007 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2006 WMO website  list
No.2 1 November 2006 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2005 WMO website  list
No.1 14 March 2006 The State of Greenhouse Gases in the Atmosphere Using Global Observations up to December 2004 WMO website  list

The WMO Greenhouse Gas Bulletins translated into Japanese are available on the JMA website .