Search found 6 matches

by eli_tes
Wed Nov 29, 2023 7:52 am America/New_York
Forum: Questions/Comments
Question: Adjusting L2gen gain factors for different atmospheric corrections
Replies: 1

Adjusting L2gen gain factors for different atmospheric corrections

Hi, I'm using MODIS-Aqua data in SeaDAS (in Ubuntu 22.04). I'm wondering about how to adjust the gain factors in the l2gen processor. Did I understand correctly that I need to change the gain factors anytime I use a different atmospheric correction (meaning select a different aer_opt that uses diffe...
by eli_tes
Wed Nov 29, 2023 7:40 am America/New_York
Forum: Questions/Comments
Question: L2gen output missing OLCI bands >709 nm
Replies: 3

Re: L2gen output missing OLCI bands >709 nm

Thank you, that's much faster!
by eli_tes
Wed Nov 15, 2023 9:26 am America/New_York
Forum: Questions/Comments
Question: L2gen output missing OLCI bands >709 nm
Replies: 3

Re: L2gen output missing OLCI bands >709 nm

If anyone encounters the same problem: I had to check the bands in Products -> Radiances/Reflectances -> Rrs too, and not just on the right side of the Products tab!
by eli_tes
Tue Nov 14, 2023 11:46 am America/New_York
Forum: Questions/Comments
Question: L2gen output missing OLCI bands >709 nm
Replies: 3

L2gen output missing OLCI bands >709 nm

Hi, I'm using L2gen in the SeaDAS GUI (version 8.4.0) in Ubuntu. I've noticed that after correcting OLCI images (using aer_opt -3, -10 or -17), the output product doesn't contain any bands > Rrs_709. All bands are selected in the L2gen products tab. One of the products I'm having this problem with: ...
by eli_tes
Mon Nov 13, 2023 10:03 am America/New_York
Forum: Questions/Comments
Question: Band maths before L2gen
Replies: 2

Re: Band maths before L2gen

Hi Sean, thank you, this is very helpful!

Could you elaborate on how to rederive the other gains? Is there somewhere I can read up on this?
by eli_tes
Thu Nov 09, 2023 12:11 pm America/New_York
Forum: Questions/Comments
Question: Band maths before L2gen
Replies: 2

Band maths before L2gen

Hi, I'm using MODIS-Aqua data in Seadas (in Ubuntu 22.04) and would like to change some bands before atmospheric correction. Specifically, I want to decrease/increase reflectance in the SWIR bands and then use the SWIR atmospheric correction. I did "Math band" but I think the results are n...