Abstract

Spectra from a 0.1-cm⁻¹ resolution absolutely calibrated emission interferometer installed near Eureka, Northwest Territories, Canada (80°N, 86°W), at the Arctic Stratospheric Observatory are presented. The Michelson-type interferometer has a maximum path difference of 10 cm and uses a liquid-N₂-cooled HgCdTe detector, which covers the spectral region from 650 to 1250 cm⁻¹. Spectral intervals containing CO₂, HNO₃, and ozone have been modeled with a line-by-line radiative-transfer code and column amounts retrieved for the latter two constituents. The instrument and initial measurements are described.

© 1996 Optical Society of America

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