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Nomenclature of VIIRS L2 differs by 1 sec from L1A and GEO

https://forum.earthdata.nasa.gov/viewtopic.php?t=3541

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Nomenclature of VIIRS L2 differs by 1 sec from L1A and GEO

Posted: Mon Oct 03, 2022 9:26 am America/New_York
by jstum
Hello,

Just to warn you that about half of VIIRS Level-2 files have nomenclature finishing by 01 (the corresponding L1A and GEO files are ending with 00). This was not the case with the old nomenclature.

Regards,
Jacques

Re: Nomenclature of VIIRS L2 differs by 1 sec from L1A and GEO

Posted: Mon Oct 03, 2022 1:20 pm America/New_York
by OB.DAAC - SeanBailey
This is not unexpected. The same issue exists with the MODIS filenames. Both MODIS and VIIRS L1 files are "chopped" into 5 (or 6) minute granules, but the scan rate for the sensors does not fall exactly on the 5 (or 6) minute boundaries. The L2 filenames are derived from the actual time of the first scan in the file. Sometimes this rounds to 1 second later than the nominal 5 (or 6) minute boundary.

Sean
All times are UTC-04:00
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