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Instrument details
Acronym
GLM
Full name
Geostationary Lightning Mapper
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
Background
New development
Scanning Technique
Electronic, 3-axis stabilised satellite, single detector matrix
Resolution
8 km s.s.p.
Coverage / Cycle
Large fraction of the disk continuously observed (time resolution 2 ms)
Mass
65 kg
Power
260 W
Data Rate
5.5 Mbps
Providing Agency
NOAA
Instrument Maturity
Demonstrated by simulations
Utilization Period:
2017-12-18 to ≥2027
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]
Mission objectives
Tentative 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
Variable Relevance for measuring this variable Operational limitations Explanation
Total lightning density 1 - primary No specific limitation. NIR channel. Continuous monitoring
Instrument: GLM