Project Deliverable D50 Report on Best Practices ... - ESONET NoE
Project Deliverable D50 Report on Best Practices ... - ESONET NoE
Project Deliverable D50 Report on Best Practices ... - ESONET NoE
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Major evoluti<strong>on</strong>s :<br />
• The SCOR/IAPSO WG 127 (UNESCO) decided that :<br />
- Absolute salinity S A must be used to process thermodynamic properties of<br />
seawater.<br />
-S A is recognise to be more accurate that practical salinity S.<br />
- A reference salinity has been defined from a determined compositi<strong>on</strong> of dissolved<br />
substances. It is calculated with :<br />
SR = (35,165 04/35). S en g/kg<br />
- S is always derived from c<strong>on</strong>ductivity measurements and from the PSS-78.<br />
- Absolute salinity is defined by :<br />
SA = SR + δSA(ϕ, λ, p)<br />
Where : ϕ = latitude, λ = l<strong>on</strong>gitude, p = pressure.<br />
<str<strong>on</strong>g>Deliverable</str<strong>on</strong>g> #50 - update October 2010 66
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