Fig. 7: Influence of the pwv on the emission profile of atomic oxygen.

a Measured spectrum of atomic oxygen at 38.3° elevation (black line, same as in Figs. 2, 3) with several fits based on NRLMSISE-00 with the nominal atomic oxygen and temperature profiles used in Fig. 2b. The pwv has been changed by ±1 µm (green line: 12.1 µm pwv, red line: 11.1 µm pwv, blue line: 10.1 µm pwv). b Residual of measured and calculated emission profile (color code is the same as in a). Note that the residual changes mostly at the peak of the line.