BackForwardInstrument:  TANSO-3 

Instrument details
Acronym TANSO-3
Full name Total Anthropogenic and Natural emissions mapping SpectrOmeter
Purpose Measurements of CH4, CO2, H2O, O2, O3 and aerosol. Band 1 at around 0.45 µm for NO2, Band 2 at around 0.76 µm for O2, and Band 3 at around 1.6 µm for CO2 and CH4.
Short description

A grating spectrometer with the high spectral resolution in the wide spectral range from the visible to the short wave infrared regions (0.45 / 0.7 / 1.6 µm). Spectral resolution < 0.5 nm @ 0.45 µm,
Background

Development from TANSO-2.
Scanning Technique

Selectable, 911 km (Wide) or 90 km (Focus)
Resolution Selectable, 10 km (Wide) or 1 – 3 km (Focus)
Coverage / Cycle 3 day repeat cycle for orbits for daytime images.
Mass Power Data Rate

 

Providing Agency MOE
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2025 to 2032
Last update: 2025-09-29
Detailed characteristics
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Earth observation instrument
  • Passive optical radiometer or spectrometer
  • Cross-nadir infrared sounder, possibly including VIS channels
WIGOS Subcomponents
  • Subcomponent 2
  • NIR/SWIR imaging spectroscopy
  • NIR/SWIR imaging spectrometer
Mission objectives
Primary mission objectives
  • (14)CH4 Delta
  • (14)CO2 Delta
  • Aerosol column burden
  • Integrated Water Vapour (IWV)
  • O3 Total Column
Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
Note: * Primary mission objective.
VariableRelevance for measuring this variableOperational limitationsExplanation
Aerosol column burden*2 - very highCloud sensitive.. Daylight only.Opportunity information from greenhouse gas NIR/SWIR spectrometer
Aerosol effective radius2 - very highCloud sensitive.. Daylight only.Opportunity information from greenhouse gas NIR/SWIR spectrometer
Aerosol mass mixing ratio2 - very highCloud sensitive.. Daylight only.Opportunity information from greenhouse gas NIR/SWIR spectrometer
Aerosol Optical Depth2 - very highCloud sensitive.. Daylight only.Opportunity information from greenhouse gas NIR/SWIR spectrometer
Aerosol type2 - very highCloud sensitive.. Daylight only.Opportunity information from greenhouse gas NIR/SWIR spectrometer
CH4 mole fraction1 - primaryCloud sensitive.SWIR and MWIR very-high-resolution spectrometry. CH4 lines around 1.6, 2.3, 3.4 and 4.3 micrometers
Cloud drop effective radius4 - fairAt cloud top.. Daylight only.NIR and SWIR spectrometry
Cloud ice effective radius4 - fairAt cloud top.. Daylight only.NIR and SWIR spectrometry
CO2 mole fraction1 - primaryCloud sensitive.Very-high resolution SWIR and MWIR spectrometry. CO2 lines around 1.6, 2.1 and 4.3 micrometers
O3 Total Column*5 - marginalCloud sensitive.TIR channel(s). Ozone lines in band around 9.7 micrometers
Upward spectral radiance at TOA5 - marginalLimited to NIR and SWIR.NIR and SWIR spectrometry
Aerosol volcanic ash2 - very highCloud sensitive.. Daylight only.Opportunity information from greenhouse gas NIR/SWIR spectrometer
Aerosol volcanic ash Total Column2 - very highCloud sensitive.. Daylight only.Opportunity information from greenhouse gas NIR/SWIR spectrometer