CEOS Instrument: High Resolution Doppler Imager

Agency: NASA
Mission: UARS
Status:No longer operational
Type:Limb-scanning SW spectrometer
Description:Daytime wind measurements below 50km from Doppler shifts of molecular oxygen absorption lines. Day and night wind measurements above about 60 km from Doppler shifts of neutral and ionised atomic oxygen emission lines. Also measures temperature
Spatial Resolution: N/A
Swath Width: N/A
Wavebands: N/A
Technology: Limb-scanning SW spectrometer
Description: Spectrometers to cover bands in UV, Vis, NIR and SWIR with spectral resolution typically of 0.1-0.3 %, required for atmospheric chemistry. Designed to provide high vertical resolution in the upper troposphere and above by scanning the Earth’s limb. Also, scanning may be performed during occultation of the sun or the moon or bright stars. Thousands of channels. Spatial resolution typically 1-3 km vertical, 300-500 km horizontal. Applicable only in LEO.

Measurement List:

(select measurement name to view details)

CEOS Systems Engineering Office (SEO)

CEOS Data Base Version: 17 - Created: 2012-01-18