Figure 1: Typical example of averaged spectra from observation in the northern hemisphere during early summer, with the corresponding vertical profile of water vapor mixing ratio and a demonstration of sensitivity along the vertical for the synergy. Top left) SPICAM-IR spectrum. Top right) Averaged PFS spectrum. Data in black and fit in red for both panels. Bottom left) Vertical profile of water vapor as obtained from simultaneous retrieval of both spectral domains, along with MCD prior vertical profile. Bottom center) Averaging kernel for retrieval made with the spectral synergy method, SPICAM/NIR, and PFS/TIR. Bottom right) Posterior-to-prior error ratio by altitude for synergistic retrieval and single spectral domain retrievals.
3.2 Data selection scheme
The complete synergy dataset is shown in Figure 2, where the seasonal coverage for all synergy column abundance retrievals are displayed as a function of latitude. Retrievals from MY 27 encompass more than 30% of all co-located observations. The total water columns here are not corrected for topography.