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Fig. 9 | Progress in Earth and Planetary Science

Fig. 9

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

Analytical flow of Momoi et al. (2020). SDF, CR, and NS ratio are aerosol volume size distribution, complex refractive index, and non-spherical ratio, respectively. Aerosol channels denote weak gas absorption bands (i.e., 340, 380, 400, 500, 675, 870, and 1020 nm). SKYMAP is a new on-site method for self-calibrating the water vapor channel of the sky-radiometer using diffuse radiances normalized by direct solar irradiance. DSRAD estimates AOT and PWV from the calibrated direct solar irradiance from sky-radiometer observations

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