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From "Martin Desruisseaux (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SIS-413) Units.PSU should have a scale value of 1/1000
Date Thu, 19 Jul 2018 14:48:00 GMT

     [ https://issues.apache.org/jira/browse/SIS-413?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Martin Desruisseaux resolved SIS-413.
-------------------------------------
    Resolution: Fixed

> Units.PSU should have a scale value of 1/1000
> ---------------------------------------------
>
>                 Key: SIS-413
>                 URL: https://issues.apache.org/jira/browse/SIS-413
>             Project: Spatial Information Systems
>          Issue Type: New Feature
>          Components: Utilities
>    Affects Versions: 0.8
>            Reporter: Martin Desruisseaux
>            Assignee: Martin Desruisseaux
>            Priority: Major
>             Fix For: 1.0
>
>
> Sea Water Salinity was used to be measured in g/kg, with values sometime written with
the "‰" symbol (e.g. "35‰"). In modern oceanography, this has been replaced by _Practical
Salinity Unit_ (PSU), with values written without symbol (e.g. "35"). Strictly speaking, PSU
units are not convertible to g/kg. However the PSU scale is by design very close to the old
scale. If someone nevertheless attempts a conversion between those two scales, we want it
to be close to the identity operation. Currently, the conversion wrongly multiply or divide
values by 1000.



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