Monthly and annual mean seawater temperature, salinity and density from 26 tide gauge sites during 1855-1993 (NCEI Accession 0000817)
Tidal observers at primary tide gauges of the United States Coast and Geodetic Survey (now the NOAA National Ocean Service) routinely measured seawater temperature and density throughout most of the 20th century with select sites well before. All available records for 26 sites have been digitized, although more paper …