Browsing by Keyword "Variational analysis"
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The mean age of ocean waters inferred from radiocarbon observations : sensitivity to surface sources and accounting for mixing histories (American Meteorological Society, 2012-02)A number of previous observational studies have found that the waters of the deep Pacific Ocean have an age, or elapsed time since contact with the surface, of 700–1000 yr. Numerical models suggest ages twice as old. Here, ...