Sentinel-3 is a newly launched satellite implemented by the European Space Agency (ESA) for global observation. The Ocean and Land Colour Imager (OLCI) sensor onboard provides 21 band images with fine spectral resolution of great value ocean, land atmospheric monitoring. two platforms (Sentinel-3A -3B) can provide OLCI at an almost daily temporal resolution. coarse spatial (i.e., 300 m), howeve...