The WDCGG archives measurement data for greenhouse and related gases in the atmosphere and the ocean (77 gaseous species as of 31 December 2009). The data are classified into six categories according to the observation platforms or methods used (see WDCGG Data Submission and Dissemination Guide).
Air observation at stationary platform
Air observation by mobile platforms (e.g. aircraft, ships, etc.)
Vertical profile observation of air (e.g. multi-height observation using a tower)
Hydrographic sampling observation by ships
Ice core observation
Observation of surface seawater and overlying air
The World Data Centre for Greenhouse Gases (WDCGG) is one of the WDCs under the Global Atmosphere Watch (GAW) programme of World Meteorological Organization . It serves to gather, archive and provide data on greenhouse gases (CO2, CH4, CFCs, N2O, surface ozone, etc.) and related gases (CO, NOx, SO2, VOC, etc.) in the atmosphere and ocean, as observed under GAW and other programmes.