Hyperspectral Non-algal Particle Plus Dissolved Organic Matter Absorption Coefficient (a_dg)

IOP | PACE Data Matchups

The absorption coefficient of non-algal particle plus dissolved organic matter (a_dg, units: m^-1) quantifies light that is absorbed by colored dissolved organic matter and non-algal pigmented particles in the near-surface layer. Field measurements of hyperspectral a_dg are routinely measured spectrophotometrically following the IOCCG Ocean Optics & Biogeochemistry Protocols for Satellite Ocean Colour Sensor Validation. PACE OCI derives hyperspectral of a_dg using the GIOP-DC* algorithm.

*We note that GIOP-DC is currently for oceanic waters.

Non-algal Particle Plus Dissolved Organic Matter Absorption Coefficient (a_dg) Click to download data: Select a_dg matchup statistics \| Select a_dg matchups
Wavelength	Mean Bias	Limits of Agreement		Linear Slope	Linear Intercept	Linear Correlation	Rank Correlation	uRMSE [View plot]	MedAE [View plot]	Matchup Plots
Wavelength	Mean Bias	Low	High	Linear Slope	Linear Intercept	Linear Correlation	Rank Correlation	uRMSE [View plot]	MedAE [View plot]	Matchup Plots
adg_400	0.262	-3.69	4.21	5.54	-2.77	0.578	0.875	1.36	0.219	Click here
adg_412	0.205	-2.98	3.39	5.55	-2.27	0.576	0.879	1.1	0.181	Click here
adg_443	0.102	-1.72	1.92	5.4	-1.33	0.574	0.865	0.625	0.109	Click here
adg_490	0.0222	-0.751	0.796	4.83	-0.597	0.567	0.84	0.264	0.0533	Click here
adg_510	0.00504	-5.32	0.542	4.45	-0.421	0.561	0.844	0.183	0.0515	Click here
adg_560	-0.0112	-999	-999	3.55	-0.173	0.547	0.822	0.0729	0.0298	Click here
adg_620	-0.0124	-999	-999	2.23	-0.0495	0.538	0.835	0.0276	0.0113	Click here
adg_665	-0.00942	-999	-999	1.6	-0.0198	0.535	0.768	0.0153	0.00628	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.