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Progress in Earth and Planetary Science
Fig. 6 | Progress in Earth and Planetary Science

Fig. 6

From: Rapid, accurate computation of narrow-band sky radiance in the 940 nm gas absorption region using the correlated k-distribution method for sun-photometer observations

Fig. 6

Filter response functions (FWHM: 5, 10, and 15 nm). Black lines represent true filter response functions at central wavelengths of 936 and 940 nm. Blue, red, and green lines show stepwise functions integrated at the sub-band level for WV-CKD-2, -5, and -10, respectively. WV-CKD-2, -5, and -10 are lookup tables for the CKD method in the water vapor absorption region of 940 nm at 2-, 5-, and 10-\({\mathrm{cm}}^{-1}\) intervals, respectively. FWHM of (a) 5 nm, (b) 10 nm, and (c) 15 nm at a central wavelength of 936 nm; FWHM of (d) 5 nm, (e) 10 nm, and (f) 15 nm at a central wavelength of 940 nm

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