Landsat 8 Ocean Color initially succesful for 2018 5th march

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jcoca
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Joined: Thu Feb 11, 2021 6:51 am America/New_York

Landsat 8 Ocean Color initially succesful for 2018 5th march

by jcoca » Thu Mar 22, 2018 2:32 pm America/New_York

Dear All

Recently I have done some test to retrieve ocean color variables from Landsat 8, using SeaDAS. I am surprised, because I started doing two test and the processing was succesful. Some days later, I tried to process other data and the processing failed. Due to that , I tried to process again the data previously succesful, and the processing failed those time. After that, I have tested in 3 computers (similar configuration SeaDAS 7.4 on Linux Ubuntu 16.04) without success in any of them. Since then any attemp has been unsuccesful.

The error is the same reported at the post  https://oceancolor.gsfc.nasa.gov/forum/oceancolor/topic_show.pl?pid=28109;hl=ERROR%20Input%20ODL%20overflows%20allocated%20space

In this post, I read that the problem related to the changes in the Collection 1 data, that is expected to be solved in SeDAS7.5 release (https://oceancolor.gsfc.nasa.gov/forum/oceancolor/topic_show.pl?tid=8199).

The fact, is that all my test have been done using data of march 2018, that are suposed to be in Collection 1 format. Acording to the post, the processing should have failed. So, why did the processing successed the first time?

Please find enclosed the Landsat 8 image with one succesful test:
LC08_L1TP_205041_20180305_20180305_01_RT.tar.gz
LC08_L1TP_205041_20180305_20180305_01_RT_MTL.txt (the metafile)

Te correspondind SeaDAS output, using defaults (including the default name):
L2018064112332.L2_LAC_OC
A map with the result;
L2018064112332_chlor_a.jpg

Please find also  enclosed, the SeaDAS processed chlorophyll-a  image (Aqua MODIS) of 5th March 2018.

Regards
Josep


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OB SeaDAS - dshea
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Landsat 8 Ocean Color initially succesful for 2018 5th march

by OB SeaDAS - dshea » Fri Mar 23, 2018 12:44 pm America/New_York

I don't know how the current OLI reader in l2gen from SeaDAS 7.4 could have read a collection 01 file.  The collection 01 *MTL.txt file is different enough that the reader parses it incorrectly.  The behavior you are experiencing now (read failure) is what I would expect.

don

jcoca
Posts: 12
Joined: Thu Feb 11, 2021 6:51 am America/New_York

Landsat 8 Ocean Color initially succesful for 2018 5th march

by jcoca » Fri Mar 23, 2018 3:49 pm America/New_York

Hello

Unbelievable!!!!
Thank you very much for your answer, Due to the unexpected result, I enclosed the images.
I will wait for seadas 7.5:wink:

Josep

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