The SDC_BLS_CLIM_TS_V1 product contains Temperature and Salinity Climatologies for the Black Sea including seasonal and monthly fields covering 3 time spans: 1955-1994, 1995-2017, and 1955-2017 and seasonal fields for 6 decades starting from 1955 to 2014. The climatological fields were computed from the merged Black Sea dataset that combines data extracted from 3 major sources: 1) SeaDataNet infrastructure, 2) World Ocean Database 2018, and 3) Coriolis Ocean Dataset for Reanalysis. The computation was done with the DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.3.1.