Spatial Heterodyne Imager for Mesospheric Radicals
Observation of the OH solar resonance fluorescence in the upper stratosphere and mesosphere.
Spatial Heterodyne Spectroscopy interferometer to measure UV emission in the spectral range 307.9-309.4 nm. Resolving power 25,000 enabling the removal of the scattered solar background from the spectra leaving the OH resonance fluorescence from which OH vertical density profiles can be inferred.
Follow-on of an experiment carried out on a Shuttle flight.
Limb sounding. Static interferometer for simultaneous observation of 2.2 km layers in the height range 30-100 km.
Vertical 2.2 km, horizontal 300 km
Coverage / Cycle
Latitudinally limited by the STPSat-1 orbital inclination of 35.4°. Coverage in about 3 days
Flown on an R&D satellite
2007 to 2009-10-07
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
Earth observation instrument Limb sounders Limb sounder
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
OH 4 - fair Limited to high atmosphere.. Daylight only. UV very-high resolution spectrometry in a band around 308.6 nm.