Fig. 3: Dependence of the atomic oxygen emission profile on concentration, temperature and height. | Communications Earth & Environment

Fig. 3: Dependence of the atomic oxygen emission profile on concentration, temperature and height.

From: Direct measurements of atomic oxygen in the mesosphere and lower thermosphere using terahertz heterodyne spectroscopy

Fig. 3

a–c Measured spectrum (black line) of atomic oxygen at 38.3° elevation (same spectrum as in Fig. 2) with several fits (blue, red, and green lines) based on concentration profiles and temperature profiles from NRLMSISE-00. a Atomic oxygen concentration is 120 or 80% of the nominal value (100%). b The temperature profile has been changed by ±5%. In this case large deviations occur at the peak of the line. c The peak of the nominal concentration profile is shifted by ±5 km. Again, large deviations occur at the peak. d–f The smallest residuals are obtained with the nominal 100% concentration and the largest deviations are in the wings of the line while the peak is not much affected.

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