Parameter: Float_bbp

Particulate backscattering coefficient (bbp) Backscattering voltage was converted to beta at 140° by subtracting dark voltages (median in-situ dark voltage, 0.078 V) and multiplying by factory calibration scale factors, modified based on measurements and calculations of Sullivan et al. (subm.). The calibration factor did not change between pre-cruise and post-cruise factory calibration. at 140° was converted to bbp (m-1 or reciprocal meter) at 700 nm by subtracting of seawater (Zhang et al., 2009) and multiplying by 2pi beta(where beta = 1.132).