The particulate backscattering coefficient (bbp, units: m-1) quantifies light that is scattered by particles into a backwards-facing hemisphere relative to the path of an incoming beam of light. Field measurements of bbp are routinely measured in the visible range with fixed-angle volume scattering function (VSF) sensors at multi- or hyperspectral resolutions following community best practice. PACE OCI derives hyperspectral of bbp using the GIOP-DC* algorithm.
*We note that GIOP-DC is currently for oceanic waters.
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Particulate Backscattering Coefficient (bbp) Click to download data: Select bbp matchup statistics | Select bbp matchups |
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| Wavelength | Mean Bias | Limits of Agreement | Linear Slope | Linear Intercept | Linear Correlation | Rank Correlation | uRMSE [View plot] |
MedAE [View plot] |
Matchup Plots | |
| Low | High | |||||||||
| bbp_490 | 0.00127 | -999 | -999 | 12.9 | -0.0308 | 0.218 | 0.896 | 0.0103 | 0.00106 | Click here |
| bbp_510 | 0.00122 | -999 | -999 | 12.8 | -0.0294 | 0.226 | 0.925 | 0.01 | 0.000946 | Click here |
| bbp_560 | 0.00106 | -999 | -999 | 13.4 | -0.0291 | 0.214 | 0.935 | 0.00953 | 0.000759 | Click here |
| bbp_620 | 0.000623 | -999 | -999 | 6.84 | -0.0116 | 0.326 | 0.944 | 0.00655 | 0.000607 | Click here |
Disclaimer: The unbiased RMESs and Median Absolute Errors shown in the hyperspectral plots are preliminary. Visitors should expect updated values over time due to incoming datasets with different spatial and temporal variability coverages and dynamic ranges, as well as to algorithm refinements.
bbp Matchup Plots
The data plotted below are Bland-Altman plots and Scatter plots for select bbp matchups.
