Sentinel 3 SLSTR Data different resolution

Hi dears,
I’m using Sentinel 3 SLSTR products.
in the same region, I using SLSTR Level 2 data, but recently I noticed that the resolution of this data doesn’t same!!! Day time LST product has 500 m resolution but Night time data has 1 km resolution!
while the user guide of SLSTR says that, The LST products have 1 km spatial resolution, What is the reason for this difference?

Thanks all


For such question it is best to contact Copernicus/ESA directly. (
In general I can say that the LST should be 1km resolution. The SLSTR L1b data has a mixed resolution of 500m and 1km.

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Thanks dear Mr @marpet