PML Catalog https://vortices.npm.ac.uk/thredds/catalog/cci/v6.0-release/geographic/annual/iop/2021/catalog.html

Dataset Size Last Modified
     Folder  2021   --
         ESACCI-OC-L3S-IOP-MERGED-1Y_YEARLY_4km_GEO_PML_OCx_QAA-2021-fv6.0.nc 2.886 Gbytes 2022-10-25T15:44:08.616Z

PML RSG THREDDS Data Server at Plymouth Marine Laboratory see Info
THREDDS Data Server [Version 4.6.11 - 2017-12-04T16:22:46-0700] Documentation