| Term: | Subantarctic upper water |
| Definition: |
The water mass of the subantarctic zone. It has a temperature of 4-10C in winter (August) and 4-14C in summer (January) and a salinity of 33.9-34.9 psu in winter, which can decrease to 33.0 in summer from the melting of ice. AMSglossary
GCW |