NAEC normal atmospheric equilibrium

NAEC, normal atmospheric equilibrium concentration The gas concentration that a water mass would attain if it reached equilibrium with the atmosphere. The NAEC of a gas is a function of water temperature and salinity as well as the partial pressure of the gas in the atmosphere. 

Because Pj = 1 atm, these concentrations are called normal atmospheric equilibrium concentrations, or NAEC. NAECs for the most common gases in seawater (35%o) over the range of temperatures encountered in the surfece ocean are shown in Table 6.2. 

Normal atmospheric equilibrium concentrations (NAEC) concentrations based on expected equilibrium conditions, between water and atmosphere, at a particular pressure, temperature, salinity, and humidity. 

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