Banding artifacts in Sentinel-2 L1C imagery

Hi everyone!

I am currently using SNAP for ocean monitoring using Sentinel-2 L1C products, and I have noticed that some products are not fully homogeneous, with visible bands appearing across the image (see attached image).

Does anyone know whether this effect is inherent to the MSI sensor, or if there is a way to correct or reduce it using SNAP?

NB: I am processing data at high latitudes (~64°N)

Thanks in advance for your help!