Particle Environment Monitor / Atmospheric X-ray Imaging Spectrometer
To measure X-ray spectra from the Earth atmosphere
Imaging spectrometer for X-rays of energy 3-100 keV in the range 0.012-0.41 nm.
Component of the UARS Particle Environment Monitor (PEM)
Imagery at 8-degree intervals across the nadir from a drifting LEO
80 km at s.s.p.
Coverage / Cycle
Global daily. Sampling at 60 s intervals
Flown on an R&D satellite
1991-12-12 to 2005-12-14
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
X-ray flux spectrum 3 - high No specific limitation. Earth's limb observed, high spectral resolution
X-ray flux 3 - high No specific limitation. X-ray imager observing the Earth's surface to detect Terrestrial Gamma-ray Flashes (TGF)
X-ray sky image 3 - high No specific limitation. Earth's limb observed, spectrometry with high spatial resolution