This section shows trends in greenhouse gases measured at Alert, Nunavut and greenhouse gases measured at select sites with data records of at least five years. The monthly averaged data were generated from quality controlled continuous hourly data or weekly flask data when the continuous data was not available. The CO2, CH4, CO and N2O data are relative to internationally assigned calibration scales.
- Atmospheric carbon dioxide measured at Alert, NU
- Carbon dioxide observations measured at multiple sites
- Atmospheric nitrous oxide measured at Alert, NU
- Nitrous oxide observations measured at multiple sites
Chlorofluorocarbon 11 and 12
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