O2 Mole Fraction
Measurement Instruments
Measurement Definition: 3D field of amount of O2 (Oxygen, expressed in moles) divided by the total amount of all constituents in dry air (also expressed in moles)
| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
| ACE-FTS | Operational | Measure and understand the chemical processes that control the distribution of ozone in the Earth's atmosphere, especially at high altitudes. Monitoring the Canadian Environmental Protection Act (CEPA), the UN Montreal Protocol, and Paris Climate Agreement. Contribute to GoC Methane Pledge | n/a |  |