| AmeriFlux: Long-term measurements of carbon dioxide, water vapor, and energy exchange from different ecosystems, which are integrated into consistent, quality assured, and fully documented data sets. |
| ATMOS User Center: Provides the European atmospheric satellite data user community with direct and easy access to measurements and derived data products from satellite based sensors. |
| British Atmospheric Data Centre (BADC): The Natural Environment Research Council (NERC) designated data centre for the Atmospheric Sciences in the United Kingdom. |
| Carbon Dioxide Information Analysis Center (CDIAC): Global-change data and information analysis for the US Department of Energy (DOE). Compiles and maintains extensive international data sets on atmospheric chemistry, particularly atmospheric concentrations of carbon dioxide, methane & other radiatively active gases. |
| IMPROVE (Interagency Monitoring of Protected Visual Environments): This section provides access to the raw and validated data products of aerosol, light scatter and light extinction in National Parks and Wilderness areas across the United States. |
| Mauna Loa Atmospheric CO2 data: Time series record of carbon dioxide in the atmosphere. |
| MOPITT AT NCAR: Provides measurements of the global distributions of carbon monoxide (CO) and methane (CH4) in the troposphere. This is satellite data. |
Classical
