Fig. 4

Example of a calculated transmittance (\( T_{\text{gas}} \), black spectrum), an observed transmittance (\( T_{\text{obs}} \), red spectrum), and a residual transmittance (\( T_{\text{haze}} \), dotted blue spectrum) measured at an altitude of 110.3 km corresponding to the observation obtained on Sep. 05, 2006 (order 149, orbit 137.1, latitude \( 79\,{\text{N}}^\circ \), longitude \( 237^\circ \)). These wavelengths are selected to visualize the analysis method