Calvalus CoastColour on-demand processing Help pages

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L2R Processing

The Level L2R product is the result of the atmospheric correction. It contains water leaving reflectance, normalised water leaving reflectance and different information about atmospheric properties.

Processor input: The processor takes L1 data as input:

1. this can be MERIS L1b in N1 format or
2. CoastColour L1P from L1P processing  alike.
   This is the only way to further process "ICOLized" products.

<Input from processings comes here>

Processor output: CoastColour L2R products in the selected format (NetCDF, GeoTIFF, or BEAM-DIMAP).

There is an important switch in the processor parameters: the type of the output reflectances. You can select if water leaving reflectances shall be written as radiances Rw or irradiances RLw. The irradiances ( = radiances multiplied by PI) are compatible with the standard MERIS product.
Pictured below are the two different input types and reflectances:

Selection of the L2R processor

In order to use the L2R processor for production, it must be selected from the Level-2 processors list. Make sure that the checkbox   is checked:

Parameters of the L2R processor

Below the processor selection area, there is a desription block which describes the processor and its parameters.
Unfold the text block for the contents to be displayed:

Please note that the processing steps of the L1P processor are implicitly included if the processing starts from a MERIS L1b product.
That's why they appear here as well. If you need to change the default values of the processor, you have two possibilities.
In the "Level-2 Parameters" section:

1. Upload a file containing the parameters in an XML structure.
   Pictured below, we have uploaded a file "L2R_params.xml". Or
2. Click on "Edit Parameters". This brings up the parameter editor.
   

Either way, after uploading or editing of the parameters, they are displayed in the text box in an XML structure: