Modes of the BiOS-driven Adriatic Sea thermohaline variability

In this study the impact of Adriatic-Ionian Bimodal Oscillating System (BiOS) on interannual to decadal variability Adriatic Sea thermohaline circulation is quantified during 1987–2017 period with numerical results and Coast (AdriSC) historical kilometer-scale climate simulation. The time series associated first five Empirical Orthogonal Functions (EOFs) computed from salinity, temperature current speed monthly detrended anomalies at 1-km resolution are correlated BiOS signal. First, it found that AdriSC model capable reproduce BiOS-driven phases derived in-situ observations along a long-term monitoring transect in middle Adriatic. Then, for entire basin, high correlations 2-year delayed signal obtained salinity two EOF 100 m depth sea-bottom. Finally, physical interpretation spatial patterns reveals bottom temperatures more influenced by dense water than BiOS. These findings confirmed generalized known dynamics previously observations, can thus be used better understand past future processes Sea.