BackForwardInstrument:  HIRDLS 

Instrument details
Acronym HIRDLS
Full name High-Resolution Dynamics Limb Sounder
Purpose Chemistry of the high atmosphere. Tracked species: CFC-11, CFC-12, CH4, ClONO2, H2O, HNO3, N2O, N2O5, NO2, O3, temperature and aerosol
Short description 21-channel filter radiometer; range 6.12-17.76 mm. Spectral resolution about 5 cm-1
Background New development
Scanning Technique Limb scanning, 6 azimuth angles, swath 2000-3000 km
Resolution Vertical: 1 km, in the altitude range 10-100 km. Horizontal effective resolution: ~ 300 km (limb geometry)
Coverage / Cycle Global coverage each 12 hours for cells of 500 km side
Mass Power 220 W Data Rate 65 kbps


Providing Agency NASA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2004 to 2008
Last update: 2017-01-17
Detailed characteristics
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 future satellites

Instrument classification
  • Earth observation instrument
  • Limb sounders
  • Limb sounder
WIGOS Subcomponents
  • Subcomponent 2
  • UV/VIS/NIR/IR/MW limb sounders
  • UV/VIS/NIR/IR/MW scanning limb sounder
Mission objectives
No mission objectives have been defined.
Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

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Note: * Primary mission objective.