l2gen processing

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aliolive
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Joined: Fri Mar 24, 2017 5:08 pm America/New_York

l2gen processing

by aliolive » Fri Apr 08, 2022 5:08 pm America/New_York

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!

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OB SeaDAS - xuanyang02
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Answers: 1

Re: l2gen processing

by OB SeaDAS - xuanyang02 » Mon Apr 11, 2022 10:20 am America/New_York

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

aliolive
Posts: 9
Joined: Fri Mar 24, 2017 5:08 pm America/New_York

Re: l2gen processing

by aliolive » Mon Apr 11, 2022 5:30 pm America/New_York

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.

OB SeaDAS - knowles
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Re: l2gen processing

by OB SeaDAS - knowles » Wed Apr 13, 2022 12:53 pm America/New_York

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
etc.

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

aliolive
Posts: 9
Joined: Fri Mar 24, 2017 5:08 pm America/New_York

Re: l2gen processing

by aliolive » Sun Apr 17, 2022 3:59 pm America/New_York

Thank you for answering! :)

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