The SDC_BLS_CLIM_TS_V2 product contains Temperature and Salinity Climatologies for Black Sea including seasonal and monthly fields covering the 3 time spans: 1955-1994, 1995-2019, and 1955-2019 and seasonal fields for 5 decades starting from 1955 to 2004 plus 15 years period 2005-2019. 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, and 3) Coriolis Ocean Dataset for Reanalysis. The computation was done with the DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.6.2.