The SYN Level-1 radiometric measurements are derived from full resolution OLCI Level-1B (~300 m) and SLSTR Level-1B products (500 m for S1-S6 and 1000 m for S7-S8 and F1-F2). The misregistrations or correspondence grids are provided on the SYN reference grid, i.e. the OLCI acquisition geometry:
At Level-2, a resampling to the OLCI L1b image grid is performed, taking into account the mis-registration and DEM-corrected geolocation information included in the SYN Level-1 product. All datasets are then provided in full resolution (~300 m) on the ortho-geolocated OLCI L1B image grid.
VGK, VGT-P and VGT-S products are provided on a regular latitude-longitude grid, with an equatorial sampling distance of 1 km (i.e. the 1km Plate Carrée grid).
The SYN AOD products are provided on a wider resolution, created from OLCI image grid. Each super pixel is representing 15 by 15 300m OLCI pixels. Resolution is then 4.5 km.