Tiny Ionosphere Photometer
To measure electron density in the upper atmosphere.
UV photometer operating at the 135.6 nm wavelength. This emission (airglow) is produced by the recombination of O+ ions and electrons and is proportional to the square of the electron density in the ionospheric F region. Applicable at night
Nadir only. Vertical domain: 90-750 km
Coverage / Cycle
Global in 2 weeks (comprehensive of the 6 satellites).
Flown on an R&D satellite
2006-07-28 to 2020-05-06
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 2 - very high No specific limitation. Earth's limb and surface observed, moderate dynamic range
UV sky image 1 - primary No specific limitation. Earth's limb observed, high spatial resolution