BackForwardInstrument:  ERM-2 

Instrument details
Acronym ERM-2
Full name Earth Radiation Measurement - 2
Purpose Earth radiation budget
Short description
Background Evolution of ERM-1 flown on FY 3A, 3B, 3C
Scanning Technique TBD
Resolution TBD
Coverage / Cycle TBD
Mass Power Data Rate


Providing Agency CMA
Instrument Maturity Backed by strong heritage
Utilization Period: 2023 to 2029
Last update: 2021-06-15
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
  • Broadband Earth radiation radiometer
WIGOS Subcomponents
  • Subcomponent 1
  • Absolutely calibrated broadband radiometers, and TSI and SSI radiometers
  • Broadband radiometer (for ERB)
Mission objectives
Primary mission objectives
  • Upward long-wave irradiance at TOA
  • Upward short-wave irradiance at TOA
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
Upward short-wave irradiance at TOA*1 - primaryNo specific limitation.LW and Total (SW+LW) broadband channels. SW computed as difference Total - LW. Cross-track and bi-axial scanning for BRDF. Supporting narrow-bandwidth channel(s)
Upward long-wave irradiance at TOA*1 - primaryNo specific limitation.LW and Total (SW+LW) broadband channels with supporting narrow-bandwidth channel(s)