THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – MEASUREMENT INSTRUMENTS
Measurements > Atmosphere >
Trace gases (excluding ozone) >
Atmospheric Chemistry - SO2 (column/profile)


Measurement Definition*: SO2 = Sulfur dioxide. Requested from surface to lower stratosphere (layers: LT, HT, LS) + Total column - Physical unit: [ ppm ] for profile, units of [1.3×1015 cm-2 ] for total column - Accuracy unit: [ % ] for profile, [1.3×1015 cm-2 ] for total column.
InstrumentStatus/
Accuracy
Instrument DescriptionMeasurement TechnologyTimeline
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
UVNS (Sentinel-5 precursor)
TROPOMI
Operational
Supporting atmospheric composition and air quality monitoring services.n/a
GEMS
Geostationary Environmental Monitoring Spectrometer
Being developed
Measurements of atmospheric chemistry, precursors of aerosols and ozone in particular, in high temporal and spatial resolution over Asia.n/a
UVAS
UVAS (Ultraviolet Visible and near-infrared Atmospheric Sounder)
Being developed
High spatial resolution observations of air quality and climate gases such as ozone (O3), nitrogen dioxide (NO2), sulphur dioxide (SO2), formaldehyde (HCHO) glyoxal (CHO-CHO), and aerosols over selected zones of interest (urban and industrialized areas, mayor motorways, and special events like forest fires, volcano eruption and sand storms). Also measurements of halogenated compounds will be performed, including bromine monoxide (BrO) and iodine monoxide (IO).n/a
UVNS (Sentinel-5)
Ultra-violet Visible Near-infrared Shortwave-infrared spectrometer
Being developed
Supporting atmospheric composition and air quality monitoring services. Measurements of atmospheric trace gases, primarily O3, NO2, SO2, HCHO, CH4 and CO.n/a
Microwave limb sounder (GACM)
Microwave limb sounder (GACM)
Proposed
Limb-viewing measurements of O3, N2O, temperature, water vapour, CO, HNO3, ClO, and volcanic SO2 in the.n/a
UV Spectrometer (GACM)
UV Spectrometer (GACM)
Proposed
Daytime measurements of O3, NO2, SO2, CH2O, and aerosols.n/a
UV/Vis Near IR Wide Imaging Spectrometer (Geo-Cape)
UV/Vis Near IR Wide Imaging Spectrometer (Geo-Cape)
Proposed
Measures natural and human-produced gases and aerosols in the atmosphere, including those that react in sunlight to form polluting low-level ozone.n/a
UVN (Sentinel-4)
UV-visible- near infrared imaging spectrometer (Sentinel-4)
Proposed
Supporting atmospheric composition and air quality monitoring services.n/a
* Description adapted from WMO.
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