How to access chl and turbidity after C2RCC processing?

[marpet]

After processing with C2RCC you find several bands in the resulting product.
chl_a is provided in the band conc_chl.
By turbidity I’m not sure what you mean. There is the conc_tsm, which provides the Total Suspended Matter.
But there is also the kd_z90max. This provides the depth of the water column from which 90% of the water leaving irradiance comes from. A value which describes how deep you can look into the water.

conc_chl and conc_tsm are dervide from the iop values. the exponent and the factor can be provided in the GUI of the C2RCC processor. They might need to be adapted to you region.
See this discussion:

Calibration_C2RCC

Hello Monaliza, the elevation is taken from the altitude band of the OLCI product. So, it is not necessary to specify this value. The best exponent and factor can be found if you compare your in-situ data with the processing results in Excel. As chl_a is computed by default by this equation 21.0 ∗ (iop_apig)^1.04 you should start from the iop_apig values calculating the chl_a. You can compare the values in a plot and try finding better factor and exponent matching your in-situ data.