Table 5 Summary table of the trends observed in our data that agreed with other studies, and the percentage of regions (over the total 9 regions) for which we found trend confirmation in other studies.

From: Global-scale parameters for ecological models

Parameter name

Confirmed trends from other studies

Confirmation percentage across the regions

Sea-surface temperature

Averagely increasing trend

56%

Sea-bottom temperature

Averagely increasing trend

89%

Net primary production

Averagely increasing trend, with local decrease in the Adriatic, Aegean, and the Black Sea

100%

Sea-bottom dissolved oxygen

Global decreasing trend, with decrease in 2020 in all regions

100%

Sea-surface salinity

Averagely decreasing trend, with increase in the Black Sea regions

67%

Sea-bottom salinity

Averagely decreasing trend

56%

Sea ice concentration

Averagely increasing trend up to 2019 and then decreasing; overall decrease in the North Sea and Black Sea regions

100%