🔹 1. Units of Salinity in SeawaterSalinity refers to the concentration of dissolved salts (mainly sodium chloride) in water. It can be expressed in several units:① PSU (Practical Salinity Unit)The most commonly used unit.Based on electrical conductivity measurements.It is dimensionless, but "PSU" is used conventionally.Example: 35 PSU means approximately 35 grams of salt per 1 kg of seawater.② ..
