“…The resulting volume scattering function β ( θ , λ ) includes both the particulate scattering signal and the scattering by pure seawater: β = β p + β sw (e.g., Stramski et al, ; Zhang et al, ). The scattering by seawater β sw was calculated using the model developed by Zhang et al (), using the calibrated temperature and salinity glider data (for calibration procedures, see Damerell et al, ), a depolarization ratio of 0.039, the wavelength λ of the respective sensor and an in‐water centroid angle θ of the ECOpuck scattering sensor of 124°. After subtraction of β sw , the particulate volume scattering function β p was converted to the particulate optical backscattering coefficient b bp , as (e.g., Briggs et al, ; Cetinić et al, ; Dall'Olmo & Mork, ), using a conversion coefficient χ p of 1.076 (for θ = 124°; Sullivan et al, ).…”