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The amount of fresh water measured across the Fairfield line can vary greatly from year to year: as an example of interannual variability we show the years 1998 (a strong El-Nino year) and 1999 (a very La-Nina year). The difference in salinity here is measured to be 0.3 PSU. The baroclinic transport associated with this salt difference leads to a deficit of nearly 50% in 1999, about 200,000 m3/s less transport. In terms of fresh water, we have 15,000 m3/s less fresh water transport- equivalent to about TWO Columbia River discharges.

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