To rectify this the Argo project placed 3500 buoys in the oceans to record temperature, salinity, acidity and flow but these have only been on operation since 2004 which only gives us ten years of data and they only go down 1800 metres. This still leave big areas of the vital Southern Ocean with few records and almost nothing of the ocean deeps.
The warmer deep water is melting the ice shelves from below and going to give us a nasty surprise so what else does the ocean have in store for us?