Command line processing with C2RCC?


#1

I am using the C2RCC with the GUI. Is there (or will there be) a way to do this via command line? Thanks,

Dan


C2RCC for processing S2 data over complex turbid water
#2

Sure, it works as for any other processor.
You can use gpt to invoke this processor.
Type gpt -h to get general help and a list of operators
Type e.g. gpt C2RCC.OLCI -h for special help for this operator.


#3

Thank you, Marco

One other question. I tried the C2RCC with S2-MSI data, but found it to be
very slow and it could never finish. The only thing I need is nLw at the
surface, so really just atmospheric correction. Is there a way to speed
this up? Or perhaps use another processor? I did subset and resample the
scene to a relatively small area.

Dan


#4

We have also noticed that it is slow for S2 data. But this is probably not caused by the processor.
When resampling and subsetting your data, have you stored it to disk before doing the processing?
Try DIMAP or NetCDF as file format.

You can disable all options except Output normalized water leaving reflectances. Then only the necessary parts are computed.
But I think it will not speed up the processing dramatically.
But the water retrieval bands can not be disabled because they are the essential output of the processor. Maybe we can think about this.


#5

Yes, that helps a lot. I just saved the subsetted resampled product as a
NetCDF, then closed all other files and ran the C2RCC. It ran much, much
faster. Thanks, Marco!

Dan


#6

Does anyone know where I can find detailed documentation on the algorithms used to create geophysical products (concentration of chl, tsm, adg absorption) in C2RCC? Thanks,

Dan


#7

These documents are not yet available, because the processor is not yet officially released.