BackForwardInstrument:  SAGE-III 

Instrument details
Acronym SAGE-III
Full name Stratospheric Aerosol and Gas Experiment - III
Purpose Atmospheric chemistry in the stratosphere. Species: H2O, NO2, NO3, O3, OClO and aerosol
Short description UV/VIS/NIR/SWIR (280-1040 nm) 9-band solar and lunar occultation grating spectrometer. Spectral resolution from 1 to 2 nm. 87 channels.
Background Follow-on of SAGE-II flown on ERBS
Scanning Technique Sun and moon tracking during the occultation phase, 1-km step from ~ 10 to ~ 85 km
Resolution 300 km (horizontal), 1-2 km (vertical)
Coverage / Cycle N/A (few tens of events/day limited to latitudes above ~ 70° (Meteor-3M). For ISS global coverage at latitudes <70 deg in 1 month.
Mass 76 kg Power 80 W Data Rate 115 kbps

 

Providing Agency NASA
Instrument Maturity Backed by strong heritage
Utilization Period: 2002 to 2026
Last update: 2022-02-23
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 1
  • UV/VIS/NIR sounders, nadir and limb
  • UV/VIS/NIR occultation limb sounder
  • Subcomponent 2
  • UV/VIS/NIR/IR/MW limb sounders
  • UV/VIS/NIR/IR occultation limb sounder
Mission objectives
Primary mission objectives
  • BrO
  • ClO
  • H2O
  • HCHO
  • NO
  • NO2
  • O3
  • SO2
Evaluation of Measurements