872857.fig.006a
(a)
872857.fig.006b
(b)
872857.fig.006c
(c)
Figure 6: Relationship between clear sky coverage (in %) in each K-index range, with the variation of the brightness temperature at 6.7 μm wavelength (BT6.7) RMSE (between observations and models). The three classes KI < 0, 0 < KI < 20, and KI > 20 are, respectively, represented by KI < 273 K, 273 < KI < 293, and KI > 293 K.