Space Weather Suite / Ionospheric PhotoMeter
UV spectrometry of the ionosphere
Observation of the night-sky 135.6 nm oxygen airglow intensity for the retrieval of ionospheric total electrons and NmF2 (sensitivity ≥150 counts.s-1.R-1); and observation of the bright-day 135.6 nm oxygen air glow intensity and the nitrogen air glow intensity of LBH (140-180 nm）(sensitivity≥1 counts.s-1.R-1) for the retrieval of oxygen-nitrogen ratio at the ionospheric altitude.
Part of the SWS (Space Weather Suite) package
Ionospheric viewing from a sunsynchronous orbit. FOV: 3.5° (along-track) × 1.6° (cross-track)
30 km at the altitude of 300 km.
Coverage / Cycle
Global daily. Sampling at 20 s intervals (oxygen) and 2 s (nitrogen)
Backed by strong heritage
2018-02-10 to ≥2022
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
Solar and space environment monitors Space radiometer or spectrometer
Subcomponent 3 UV spectral imager [from GEO, HEO, MEO, LEO]
Tentative Evaluation of Measurements
The following list indicates which measurements can
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
UV flux 1 - primary No specific limitation. Earth's limb and surface observed, wide dynamic range
UV sky image 1 - primary No specific limitation. Earth's limb observed, high spatial resolution