So2 Mole Fraction
Measurement Instruments
Measurement Definition: 3D field of amount of SO2 (Sulfur dioxide, expressed in moles) divided by the total amount of all constituents in dry air (also expressed in moles) - Measuring Units molecules.cm-2, Uncertainty Units %
| Instrument | Status/
Accuracy | Instrument Description | Measurement Technology | Timeline |
| AHSI | Operational | Greenhouse Gases (CO2, CH4, N2O, etc), Atmospheric Pollutants (NO2, SO2, HCHO, etc) | n/a |  |
| EMI-2 | Operational | Ozone profile and total-column or gross profile of other species. Tracked species: BrO, ClO H2O, HCHO, NO, NO2, O3, SO2 and aerosol | n/a | |
| EPIC | Operational | Provides global spectral images of the entire sunlit face of Earth and insight into Earth's energy balance. EPIC's observations will provide a unique angular perspective, and will be used in science applications to measure ozone amounts, aerosol amounts, cloud height and phase, vegetation properties, hotspot land properties and UV radiation estimates of Earth's surface. | n/a | |
| GEMS | Operational | Measurements of atmospheric chemistry, precursors of aerosols and ozone in particular, in high temporal and spatial resolution over Asia. | n/a | |
| MLS (EOS-Aura) | Operational | Measures lower stratospheric temperature and concentration of H2O, O3, ClO, HCl, OH, HNO3, N2O and SO2. | n/a | |
| NACHOS Hyperspectral Imager | Operational | | n/a | |
| OMS-L | Operational | Ozone total column vertical profile measurements. | n/a | |
| OMS-N | Operational | SUVI uses extreme ultraviolet spectral lines to achieve long-term and continuous observations of the sun, so as to obtain high temporal and high spatial resolution images of the solar corona. | n/a | |
| TROPOMI | Operational | Supporting atmospheric composition and air quality monitoring services. | n/a | |
| UVN (Sentinel-4) | Being developed | Supporting atmospheric composition and air quality monitoring services. | n/a | |