CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
Measurements > Atmosphere >
Trace gases (excluding ozone) >
SO2 Mole Fraction


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 %
InstrumentStatus/
Accuracy
Instrument DescriptionMeasurement TechnologyTimeline
AHSI
The Advanced Hyperspectral Imager
Operational
Greenhouse Gases (CO2, CH4, N2O, etc), Atmospheric Pollutants (NO2, SO2, HCHO, etc)n/a
EMI-2
Environment Monitoring Instrument-2
Operational
Ozone profile and total-column or gross profile of other species. Tracked species: BrO, ClO H2O, HCHO, NO, NO2, O3, SO2 and aerosoln/a
EPIC
Earth Polychromatic Imaging Camera
Operational
Diurnal measurements of ozone, sulfur dioxide, UV surface radiation, clouds, aerosols and vegetation.n/a
GEMS
Geostationary Environment Monitoring Spectrometer
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)
Microwave Limb Sounder (EOS-Aura)
Operational
Measures lower stratospheric temperature and concentration of H2O, O3, ClO, HCl, OH, HNO3, N2O and SO2.n/a
NACHOS Hyperspectral Imager
NACHOS Hyperspectral Imager
Operational
 n/a
TROPOMI
TROPOMI
Operational
Supporting atmospheric composition and air quality monitoring services.n/a
ACX
GeoXO Atmospheric Composition Instrument
Being developed
 n/a
* Description adapted from WMO.