Hcho Mole Fraction
Measurement Instruments
Measurement Definition: 3D field of amount of HCHO (Formaldehyde, 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 |
| 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 | |
| Spectrometer (TEMPO) | Operational | Hourly measurements of air pollution over North America, from Mexico City to the Canadian oil sands, at high spatial resolution. Measurements in ultraviolet and visible wavelengths will provide a suite of products including the key elements of tropospheric air pollution chemistry. Will be part of the first global geostationary constellation for pollution monitoring, along with European and Korean missions now in development. | 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 | |
| UVNS (Sentinel-5) | Being developed | Supporting atmospheric composition and air quality monitoring services. Measurements of atmospheric trace gases, primarily O3, NO2, SO2, HCHO, CH4, CO, CHOCHO as well as Aerosols and UV Index. | n/a | |