Preferential uptake of NH4 + over NO3 2 - in marine ecosystem models: A simple and more consistent parameterization

S. M. Vallina, C. Le Quéré

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11 Citations (Scopus)


Here we present and analyse the behaviour of four different parameterizations of the preferential uptake of NH4+ over NO32 -. The first three (Wroblewski-Fasham, Spitz, Hurtt and Armstrong) are commonly used in current marine ecosystem models. However, they show either formulational inconsistencies (e.g. Wroblewski-Fasham), unrealistic features (e.g. Spitz) or structural rigidity (e.g. Hurtt and Armstrong). We therefore suggest a newer parameterization by slightly modifying the Wroblewski-Fasham formulation that easily overcome these deficiencies and could be used in the next generation of marine ecosystem models.
Original languageEnglish
Pages (from-to)393-397
Number of pages5
JournalEcological Modelling
Issue number3-4
Publication statusPublished - 10 Nov 2008

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