BackForwardInstrument:  LI 

Instrument details
Acronym LI
Full name Lightning Imager
Purpose Proxy for convective precipitation, proxy for NOx generation, study of Earth electric field
Short description CCD camera operating at 777.4 nm (O2) to count flashes and measure their intensity. Detection efficiency of triggered events > 90 % for events at 45°, and 70% in average over whole instrument coverage area
Background New development
Scanning Technique Electronic, 3-axis stabilised satellite, single detector matrix
Resolution 4.5 km at s.s.p.
Coverage / Cycle Full disk continuously observed (time resolution ~ 1 ms)
Mass 60 kg Power 60 W Data Rate ~ 500 kbps


Providing Agency ESA
Instrument Maturity Flown on operational programme
Utilization Period: 2023 to 2046
Last update: 2021-06-02
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
  • Lightning imager
WIGOS Subcomponents
  • Subcomponent 1
  • Lightning mappers [in GEO]
  • Lightning mapper [in GEO]
Mission objectives
Primary mission objectives
  • Total lightning density
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
Total lightning density*1 - primaryNo specific limitation.NIR channel. Continuous monitoring