Page 1 of 1

l2gen processing

Posted: Fri Apr 08, 2022 5:08 pm America/New_York
by aliolive
I am running some tests regarding the IOP processing (MODIS).
1- Setting the suite=IOP and then selecting all the iops at the visible wavelength for _giop.
2- Setting the suite=OC and selecting the iops at the visible wavelength for _giop.
Both ways run as expected. But the values for aph, for instance, are slightly different.
Is the second approach wrong?
What is causing the observed differences in the values estimated?

Thank you!

Re: l2gen processing

Posted: Mon Apr 11, 2022 10:20 am America/New_York
by OB SeaDAS - xuanyang02
The selected suite defines all the parameter defaults.

When suite=IOP, the iop_opt's default is 7 -GIOP on l2gen's IOP Options tab.

When suite=OC, the iop_opt's default is 0 -None

Re: l2gen processing

Posted: Mon Apr 11, 2022 5:30 pm America/New_York
by aliolive
OK. Thank you for your answer.
If set the suite=OC and set the iop_opt to 7-GIOP, should it be similar to set suite=IOP?
For the IOPs I mean.

Re: l2gen processing

Posted: Wed Apr 13, 2022 12:53 pm America/New_York
by OB SeaDAS - knowles
When you choose a suite in l2gen it applies the values in the particular suite parameter file.

So for example for modis the suite files are:
IOP: $OCSSWROOT/share/modis/msl12_defaults_IOP.par
GSM: $OCSSWROOT/share/modis/msl12_defaults_GSM.par
OC: $OCSSWROOT/share/modis/msl12_defaults_OC.par

You can take a look at the files to see the configuration and what's different between the suites.

Re: l2gen processing

Posted: Sun Apr 17, 2022 3:59 pm America/New_York
by aliolive
Thank you for answering! :)