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
No WIGOS subcomponents have been defined.
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