The Ross Sea receives meltwater from the Ross Ice shelf, a major continental glacier on Antarctica. Measurements by Jacobs et al (2002) over the last four decades reveal a trend toward decreased salinity. This enhancement of freshwater is a result of a combination of factors including increased precipitation, reduced sea-ice production, and increased melting of the West Antarctic sheet. These factors are consistent with an acceleration of global warming.
Reference
Jacobs, S.S., C.F. Guilivi, and A.A. Mele, 2002: the Ross Sea during the late 20th Century. Science, 297, 386-389.