CALIBRATED 0.1-CM(-1) IR EMISSION-SPECTRA FROM 80-DEGREES-N

Spectra from a 0.1-cm(-1) resolution absolutely calibrated emission in terferometer installed near Eureka, Northwest Territories, Canada (80 degrees N, 86 degrees W), at the Arctic Stratospheric Observatory are presented. The Michelson-type interferometer has a maximum path differ ence of 10 cm and uses a liquid-N-2-cooled Spectral intervals HgCdTe d etector, which covers the spectral region from 650 to 1250 cm(-1). Spe ctral intervals containing CO2, HNO3, and ozone have been modeled with a line-by-line radiative-transfer code and column amounts retrieved f or the latter two constituents. The instrument and initial measurement s are described. (C) 1996 Optical Society of America