CCI THREDDS Data Server Catalog https://data.cci.ceda.ac.uk/thredds/catalog/esacci/aerosol/data/AATSR_ORAC/L2/catalog.html

Dataset Size Last Modified
     Folder  L2   --
         Folder  v4.01/   --
         Folder  v3.02/   --

CCI THREDDS Data Server at CEDA see Info
Documentation