Figure from High-resolution infrared spectroscopy at South Pole and McMurdo Stations
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Figure 1. Clear-sky emission spectrum from the South Pole on 26 February 1996, taken at 82.5 zenith angle. Expanded view of the 12-micron window, showing emission lines of nitric acid (HNO3) and water vapor (H2O). Solid line: calculated spectrum. Dashed line: measured spectrum. |