https://podaac.jpl.nasa.gov/dataset/OSTIA-UKMO-L4-GLOB-v2.0
same as
https://resources.marine.copernicus.eu/product-detail/SST_GLO_SST_L4_REP_OBSERVATIONS_010_011/INFORMATION


RESULT
dimension [nx ny], nx=7200, ny=3600
dx=0.05;
lon5km=-179.9750:dx:180;
lat5km= -89.9750:dx:90;

@ 5km/OSTIA_LLC_SST_{YYYYMMDD}.mat

        sst_ostia 	OSTIA SST @5km resolution
        sst_llc 	LLC2160 SST @5km resolution