Why would a_qaa be an "Invalid product name?"

[blesht]

Hi.  I'm trying to generate some MODIS L2 files that have only the Lee IOP values (a_qaa and bb_qaa).  I have a script that invokes l2gen.  The script has the following line:

  echo l2prod=a_qaa bb_qaa l2_flags >> .parin

However, the script fails as below:

Opening: /Volumes/3TBDrive/MODIS/L2v73qaa/Michigan/2016/A2016001182500.L2.hdf
Reading Thuillier_F0.dat
The following products will be included in /Volumes/3TBDrive/MODIS/L2v73qaa/Michigan/2016/A2016001182500.L2.hdf.
0 a_qaa
1 bb_qaa
2 l2_flags

/Users/seadas/ocssw/build/src/l2gen/get_l2prod_index.c - Invalid product name : a_qaa

Why would this happen?

[OB.DAAC - SeanBailey]

The product is wavelength-specific, you need to specify the wavelength of interest:

a_nnn_qaa
bb_nnn_qaa

where nnn is replaced by the integer wavelength (e.g. a_412_qaa).
If you leave nnn it will try to generate products for bands for which it cannot.
But you can replace nnn with vvv to get all the visible wavelengths

Sean

[blesht]

Thanks, Sean.  That would explain why, in an older version of the code (I just uncovered), I requested "a_488_qaa."   I was using the SeaDAS7.3.2 l2gen GUI to explore product options and didn't notice anything that suggested I needed to specify the wavelength.  Should have figured that out, I guess.

Best, Barry

[OB.DAAC - SeanBailey]

You're welcome...BTW, the GUI *does* indicate the product is wavelength specific:

[blesht]

Hmmm.   That's not what I see (SeaDAS7.3.2 on Mac under Sierra 10.12.3). The a_qaa choice indicate it can be expanded.  I have a screen shot but need to figure out how to post it.

B.

[OB.DAAC - SeanBailey]

You need to load a file (enter an input file) for the GUI to know what wavelengths you've got to work with...

[blesht]

Ah - thanks!