Fig. 7
From: The open-ocean missing backscattering is in the structural complexity of particles
Modelled and measured bbp-to-cp ratios. a Percent ratios of particulate backscattering (\(Q_{{\mathrm{b}}_{\mathrm{b}}}\)) to the beam attenuation (Qc) efficiency factors at 532 nm, as a function of the particle diameter (D, units of µm). Qc is corrected for the acceptance angle effect (see Methods). The red solid line is the average ratio for the selected coated-sphere parameterisations and blue areas are the standard deviation. The black dashed line indicates the backscattering ratio for homogeneous spheres with equivalent volume-averaged refractive index. b Boxplot of percent ratios between particulate optical backscattering (bbp) and beam attenuation (cp) coefficients at 532 nm, as estimated using the coated-sphere model ensemble and measured in situ (AMT22 and AMT26 data). The thick black line indicates the median value. Upper and lower side of each box are the third and first quartiles, respectively. Vertical bars represent minimum and maximum values. Open circles are outliers
