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The average salinity of seawater is S = 35 which means that SW is 3.5% salt and 96.5% H2O by weight. Why is salinity important? 1. Salinity, along with temperature, determines the density of seawater, and hence its vertical flow patterns in thermohaline circulation. 2. Salinity records the physical processes affecting a water mass when it was ...
Important state variables measured for parcels of water in the ocean are therefore temperature, which is related to the heat content, salinity, which is related to the amount of dissolved...
Temperature, Salinity, and Water Density. Key Ideas. Ocean water circulates in currents. Surface currents are driven by wind and affect the uppermost 10% of the ocean. Circulation of the other 90% of the ocean is driven by gravity, as dense water sinks and less dense water rises.
Temperature and salinity control seawater's density. The weight of seawater determines whether it sinks or floats, helping to drive deep ocean circulation. At the sea surface, wind and waves move seawater — and the heat it carries — around our globe.
temperature, salinity, and density. Since WOA13, the ocean variable analyses are produces on 102 depth levels from the surface to 5,500 m (previously 33 levels within the same depth limits).
As with temperature and density, salinity increases rapidly from 100–1000 m (330–3300 ft), then remains nearly uniform below 1000 m (3300 ft). The zone where the most rapid changes in salinity with depth occur is called the halocline (halo- for halite, the mineral name for common table salt).
The WOA18 series includes analysis for temperature (Locarnini et al., 2019); salinity (this atlas); dissolved oxygen (Garcia et al., 2019a); and dissolved inorganic nutrients (Garcia et al., 2019b). This atlas presents annual, seasonal, and monthly climatologies and related statistical fields for salinity.
