I’m new on sentinel-3 imagery processing. I am a bit confused by the resolution of Sentinel-3 Level 2 products. In the user guide OLCI has a resolution of 300m, but in the metadata of the nc files of OL_2_WFR and OL_2_LFR the resolution is [270, 294]. Also, the resolution of Synergy products are derived from OCLI and SLSTR (written here), but the metadata of the nc files of SY_2_SYN actually states the resolution as [300, 300] for data derived from OLCI and SLSTR (e.g., Syn_Oa21_reflectance_Data and Syn_S1N_reflectance_Data).
Besides, I’ve seen articles using Ground Sampling Distance and it is defined as the distance between two neighbouring pixel centre. Is is the same as the resolution stated in the metatdata of the nc files of S3 products? I also found Spatial Sampling interval at Sub-satellite point in the specification of OLCI and SLSTR. Does it mean the same thing as Ground Sampling Distance?
They all have different definition but quite similar in some way, and I am totally confused.
Thank you all in advance