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Progress in Earth and Planetary Science
Fig. 8 | Progress in Earth and Planetary Science

Fig. 8

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. 8

Angular distributions of the simulated normalized radiances for the continental average aerosol (Table 6) in the almucantar plane with AOT of 0.02 and 0.20 at 940 nm. Simulations were conducted for a solar zenith angle of 70 degrees and PWV (\(w\)) = 0, 1, 2, 3, 4, and 5 cm. a, b Convolved normalized radiance, \(R\). c, d Ratio of \(R(w)\) to \(R(w = 0 \mathrm{cm})\). Solid lines show radiances obtained with the SN-CKD and dashed lines show radiances obtained with the WV-CKD-2. SN-CKD is a standard lookup table for the CKD method in the radiative transfer model RSTAR, and WV-CKD-2 is a lookup table for the CKD method in the water vapor absorption region of 940 nm at 2-\({\mathrm{cm}}^{-1}\) intervals

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