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News and Updates

Registration open for The 20th WMO/IAEA Meeting on Carbon Dioxide, Other Greenhouse Gases, and Related Measurement Techniques (GGMT-2019) on 2 - 5 September 2019 in Jeju, Republic of Korea;
"Low-cost sensors for the measurement of atmospheric composition: overview of topic and future applications"
Follow-up discussion forum:
"Guide to Integrated Urban Weather Environment Climate Services" (presented to EC-70)


31 August 2018: The World Data Centre for Greenhouse Gases (WDCGG) launched its new website:

31 July 2018: Torfhaus station, Germany was accepted as GAW Regional station.

31 July 2018: Graciosa station, Portugal was accepted as GAW Regional station.

3 July 2018: The Pic du Midi Observatory in the French Pyrenees mountain range was accepted as GAW Regional Station.

22 May 2018: The Research Vessel Investigator (Australia) was accepted as the first GAW Regional Mobile Station. For more information, see WMO's press release on the World Ocean Day.

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

Strategic Documents

GAW Implementation Plan for 2016-2023

GAW diagram

Click here to download the GAW Implementation Plan

Integrated Global Greenhouse Gas Information System (IG3IS) Implementation Plan

IG3IS draft Implementation Plan

Download the working draft Implementation Plan prepared for EC-70 PDF

Low cost sensors technologies

Sensors set

Reactive Gases Expert Group: Technical advice note on lower cost air pollution sensors


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). GAW recently initiated development of the system that uses observations of greenhouse gases, combining them with analysis and other information to improve estimates of the anthropogenic emissions (an Integrated Global Greenhouse Gas Information System).

Aerosols Greenhouse gases Reactive gases Ozone UV radiation Acid deposition
GURME Sand and Dust Storms Applications IG3IS GESAMP MAP-AQ



Some components op the GAW observational network are recognized as comprhensive and baseline networks of the Global Climate Observing System (GCOS).

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

The GAW Programme operates according to the GAW Implementation Plan 2016-2023.


Meetings & Training

Upcoming meetings
Materials of previous meetings
 GAW and related meeting lists (2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018)

Draft GAW reports (open for comments):







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