Direct Observations of North Pacific Ventilation: Brine Rejection in the Okhotsk Sea
Andrey Y. Shcherbina,
Lynne D. Talley,*
Daniel L. Rudnick
Brine rejection that accompanies ice formation in coastal polynyas
is responsible for ventilating several globally important water
masses in the Arctic and Antarctic. However, most previous studies
of this process have been indirect, based on heat budget analyses
or on warm-season water column inventories. Here, we present
direct measurements of brine rejection and formation of North
Pacific Intermediate Water in the Okhotsk Sea from moored winter
observations. A steady, nearly linear salinity increase unambiguously
caused by local ice formation was observed for more than a month.
Scripps Institution of Oceanography, University of California, San Diego, USA.
* To whom correspondence should be addressed. E-mail: ltalley{at}uscd.edu