A New Global Ocean Climatology

A new global ocean temperature and salinity climatology is proposed for two time periods: a long mean using multiple sensor data the 1900–2017 period shorter only profiling float 2003–2017 period. We use historical database of World Ocean Database 2018. The estimation approach novel as an additional quality control procedure implemented, along with mapping algorithm based on Data Interpolating Variational Analysis. procedure, in addition to traditional approach, resulted low sensitivity terms first guess field choice. roughness index root square residuals are indices applied selection free parameters experiments. Overall, estimates were consistent previous climatologies, but several differences found. cause these discrepancies difficult identify due procedures. To minimise uncertainties, multi-model ensemble least uncertain estimate climatology.