Difference Between OLCI output on v4.12 and v4.13

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Ehsan Mehdipour
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Joined: Fri Oct 08, 2021 9:37 am
company / institution: Alfred Wegener Institute of Polar and Marine Science
Location: Bremerhaven

Difference Between OLCI output on v4.12 and v4.13

Post by Ehsan Mehdipour »

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
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Ehsan Mehdipour
Posts: 5
Joined: Fri Oct 08, 2021 9:37 am
company / institution: Alfred Wegener Institute of Polar and Marine Science
Location: Bremerhaven

Re: Difference Between OLCI output on v4.12 and v4.13

Post by Ehsan Mehdipour »

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?
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fsteinmetz
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company / institution: Hygeos
Location: Lille, France
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Re: Difference Between OLCI output on v4.12 and v4.13

Post by fsteinmetz »

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
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