We gathered over 600,000 temperature/salinity profiles and time series observations of essential ocean variables (here ocean temperature, salinity, pressure and currents) that are reposited in various data centres and in various formats across the world. This heterogeneity creates a significant barrier for researchers trying to obtain a circumpolar view of ocean processes. Here, we provide version 1 of two compilation datasets merging observations from an extensive set of sources, and attempting to be as complete as possible. This open dataset will provide the observational backbone for OCEAN:ICE analysis and hopefully many other projects around the world. We are looking for continuing expanding both the profile compilations with the addition of early temperature measurement collected using eXpendable BathyThermograph (XBT), Mechanical Bathythermograph (MBT), early salinity measurement from bottle measurements, remaining mooring time series that is under embargo or under-processing with our contributor as listed above.