WMO OSCAR | Details for Instrument SAGE-III

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Instrument: 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

Meteor-3M (RosHydroMet)
- Meteor-3M (see instrument status) Mar 2002 - Apr 2006
International Space Station (NASA)
- ISS SAGE-III (see instrument status) May 2017 - 2026

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

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.

Note: table can be sorted by clicking on the column headers
Note: * Primary mission objective.

Search:

Variable	Relevance for measuring this variable	Operational limitations	Explanation
Aerosol mass mixing ratio	5 - marginal	Limited to high atmosphere.. Limited to high latitudes.. Daylight only.	UV, NIR, SWIR limb sounding by solar occultation. Self-calibrating
BrO*	5 - marginal	Limited to high atmosphere.. Daylight only.	UV spectrometry. BrO lines around 300 nm. Limb sounding by solar occultation.. Self-calibrating
HCHO*	5 - marginal	Limited to high atmosphere.. Daylight only.	UV spectrometry. HCHO lines around 350 nm Limb sounding by solar occultation. Self-calibrating
ClO*	5 - marginal	Limited to high atmosphere.. Daylight only.	UV spectrometry. ClO lines around 300 nm. Limb sounding by solar occultation. Self-calibrating
NO*	5 - marginal	Limited to high atmosphere.. Daylight only.	UV spectrometry. NO lines around 250 nm. Limb sounding by solar occultation. Self-calibrating
NO2*	5 - marginal	Limited to high atmosphere.. Daylight only.	UV and VIS spectrometry. Several lines in the ranges around 220 nm and 400 nm. Limb sounding by solar occultation. Self-calibrating
O3*	5 - marginal	Limited to high atmosphere.. Daylight only.	UV and VIS spectrometry. Ozone lines in the bands around 260 nm (Hartley) and/or 340 nm (Huggins) and 600 nm (Chappuis). Limb sounding by solar occultation. Self-calibrating
PSC occurrence	5 - marginal	Limited to high atmosphere.. Daylight only.	UV and VIS spectrometry. Limb sounding by solar occultation. Self-calibrating
SO2*	5 - marginal	Limited to high atmosphere.. Daylight only.	UV spectrometry. SO2 lines around 350 nm. Limb sounding by solar occultation. Self-calibrating
H2O*	5 - marginal	Limited to high atmosphere.	Spectrometry in UV and VIS (weak bands), and NIR and SWIR (strong bands around 940 and 1380 nm). Limb sounding by solar occultation. Self-calibrating
Specific humidity	5 - marginal	Limited to high atmosphere.. Daylight only.	UV, VIS, NIR and SWIR spectrometry with several water vapour bands (main: around 940 and 1380 nm nm). Limb sounding by solar occultation, Self-calibrating
Aerosol volcanic ash	5 - marginal	Limited to high atmosphere.. Daylight only.	UV, NIR and SWIR spectrometry; limb sounding by solar occultation. Self-calibrating
Atmospheric temperature	5 - marginal	Limited to high atmosphere.. Daylight only.	VIS spectroscopy at lower resolution 10 nm

Showing 1 to 13 of 13 entries