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Proceedings Paper

Cryogenic limb array etalon spectrometer: experiment description
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Paper Abstract

The CLAES measurement concept, instrument design, and performance are presented, and the scientific capabilities and measurement modes are discussed. The CLAES experiment involves remote measurement of earth-limb emission spectra. Characteristic vibration-rotation line spectral radiances are obtained between 3.5 and 13 microns and inverted through an iterative relaxation process to yield pressure, temperature, and species mixing ratio. The UARS limb-viewing instruments, including CLAES, combined with the 57-deg orbit inclination, allow for measurements to 80-deg latitudes. CLAES requires high spectral resolution and high radiometric sensitivity to isolate and accurately measure weak emissions from trace species such as HCl and NO against intense backgrounds from abundant emitters such as CO2, H2O, and O3. Accuracy and precision of retrieved quantities, observational modes, and calibration modes are also discussed.

Paper Details

Date Published: 1 September 1991
PDF: 13 pages
Proc. SPIE 1491, Remote Sensing of Atmospheric Chemistry, (1 September 1991); doi: 10.1117/12.46651
Show Author Affiliations
Aidan E. Roche, Lockheed Research & Development Div. (United States)
John B. Kumer, Lockheed Research & Development Div. (United States)

Published in SPIE Proceedings Vol. 1491:
Remote Sensing of Atmospheric Chemistry
James L. McElroy; Robert J. McNeal, Editor(s)

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