Parameter: sigma-theta potential density (deprecated)

Use Instead: 
sigma-theta
Short Description: 
sigma-theta potential density
Short Name: 
sigma_theta
Official Name: 
sigma_theta
Units: 
kilograms per meter cubed - 1000
Graphable: 
Yes
No Data Value: 
nd
External Identifier:
» rdfs:seeAlso http://vocab.nerc.ac.uk/collection/P01/current/SIGTPR01
Description

sigma_theta density. [The density calculated with in situ salinity, potential temperature, and pressure = 0, minus 1000 kg/m3. If a pressure reference level other than the surface is used, it will be indicated by using the reference level as the subscript for sigma. When comparing the density of water samples from different depths, it is preferable to use sigma-theta. - added 11/15/2013, njc from the Naval Postgraduate School, http://www.oc.nps.edu/nom/day1/parta.html]