The SeaDataCloud Temperature and Salinity Historical Data Collection for the North Atlantic Ocean includes open access in situ data on temperature and salinity of water column in the North Atlantic Ocean (from 10°N to 62°N for the east part and including the Labrador Sea for the west part) for period 1900 – 2017. The data were retrieved from the SeaDataNet infrastructure at the end of October 2017. The dataset format is ODV binary collections [1]. The quality control of the data has been performed with the help of ODV software. Data Quality Flags have been revised and set up using recommended QC procedures defined during SeaDataNet2 in conjunction with the visual expert check.