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 file records may still exist for others. Students at Florida Institute of Technology provided the key entry and quality control. The purpose was to study trends in sea water temperature and density in support of increasing the scientific understanding of low-frequency changes across a wide spatial domain of the coastal United States.