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News and Updates



26 July 2016: A Memorandum of Understanding has been signed between In-service Aircraft for Global Observing System (IAGOS) Association Internationale Sans But Lucratif (AISBL) and WMO/GAW.

11 July 2016: GAW Newsletter (e-zine) no. 5, June 2016 was published.

16 June 2016: The report of the Coupled Chemistry-Meteorology/ Climate Modelling (CCMM) Symposium is published.

14 June 2016: Bachok Marine Research Station, Malaysia was accepted as a GAW Regional station

21 May 2016: The Research Centre J├╝lich, Germany, in collaboration with the Universities of Cologne and Wuppertal,offers its annual Intensive Course "Atmospheric  Chemistry and Dynamics" from October 10th to 14th 2016.

19 May 2016: The 8th Asia-Pacific GAW Workshop on Greenhouse Gases will take place 17-21 October 2016 in Seoul, Republic of Korea. (Announcement and Registration Form)

For more news and for signing up to the e-zine, please go to NEWS-ARCHIVE

Strategic Documents

Draft GAW Implementation Plan for 2016-2023

Click here to download the draft GAW Implementation Plan

Integrated Greenhouse Gas Information System (IG3IS) Concept Paper


Download the concept paper as MS Word or PDF

Recent selected data plots

Click here to go to the plots page


The Global Atmosphere Watch (GAW) programme of WMO is a partnership involving the Members of WMO, contributing networks and collaborating organizations and bodies which provides reliable scientific data and information on the chemical composition of the atmosphere, its natural and anthropogenic change, and helps to improve the understanding of interactions between the atmosphere, the oceans and the biosphere.

GAW focal areas are aerosols, greenhouse gases, selected reactive gases, ozone, UV radiation and precipitation chemistry (or atmospheric deposition). GAW supports the WMO GAW Urban Research Meteorology and Environment (GURME) project and works together the Group of Experts on Scientific Aspects of Marine Environmental Protection (GESAMP) as well as provides Sand and Dust Storms Warning (SDS-WAS).

Greenhouse gases
Reactive gases
UV radiation
Acid deposition
Sand and Dust Storms

GAW is considered the atmospheric chemistry component of the Global Climate Observing System (GCOS).

Organizational components and structure of the Programme are presented under "Structure".

The GAW Programme operates according to WMO Global Atmosphere Watch (GAW) Strategic Pan: 2008-2015 and its Addendum.


Meetings & Training

Upcoming meetings (2016)
Materials of previous meetings
 GAW and related meeting lists (2009, 2010, 2011, 2012, 2013, 2014, 2015)

Draft GAW reports (open for comments):

Draft of GAW Report no. 227: WMO/GAW Aerosol Measurement Procedures, Guidelines and Recommendations, 2nd Edition, 2016





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