HYGEOS support forum

Hi,

I have processed OLCI Level1 data to Level2 with v4.12 and v4.13. I can detect a maximum of 6% difference between the two versions output. Can anyone tell me why this is happening and if this is logical?
You can see some example attached.

Best,
Ehsan

Btw, the charts are showing the percentage difference between v4.12 and v4.13.

As I am checking now there is the new version 4.14, does it highly effect OLCI on open-ocean applications?

Hello,
Did you use ERA5 ancillary data ?
If so, that would explain the difference. See https://www.hygeos.com/static/polymer/CHANGELOG.TXT for more information about the product evolutions between each versions.
Cheers,
François