H2o Mole Fraction
Measurement Instruments
Measurement Definition: 3D field of amount of H2O (Water, 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. | n/a |  |