The formation of seaice causes the concentration of salt in surface waters to increase; less seaice would mean a smaller increase in the concentration of salt.
海冰的形成导致表水中盐的浓度增加;海冰的减少意味着盐浓度的增加幅度较小。
2
The yellow outline shows the median seaice extent observed by satellite sensors in September and March from 1979-2000. "extent" is the total area with an ice concentration of at least 15 percent.