aou

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Acronym OverUsage

Abbreviation for Apparent Oxygen Utilization, defined as the difference between the observed oxygen content and the saturation oxygen content of a sample of sea water This is a method of estimating the amount of dissolved oxygen utilized by organisms via respiration, although it is called "apparent" for a reason Surface waters may more than likely carry more than the saturation amount of oxygen due to the nonlinearity in the solubility of oxygen with temperature The effects of this nonlinearity are small, though, and the AOU is usually quite close to TOU, the True Oxygen Utilization See Broecker and Peng (1982)