NOAA/PSL Catalog http://psl.noaa.gov/thredds/catalog/Datasets/icoads/catalog.html

Dataset Size Last Modified
     Folder  icoads   --
         Folder  1degree/   --
         Folder  2degree/   --

NOAA/PSL at NOAA PSL see Info
THREDDS Data Server [Version 4.6.15-SNAPSHOT - 2020-01-28T04:01:10+0000] Documentation