gsw_entropy_from_t
specific entropy of seawater
Contents
USAGE:
entropy = gsw_entropy_from_t(SA,t,p)
DESCRIPTION:
Calculates specific entropy of seawater.
INPUT:
SA = Absolute Salinity [ g/kg ]
t = in-situ temperature (ITS-90) [ deg C ]
p = sea pressure [ dbar ]
( i.e. absolute pressure - 10.1325 dbar )
SA & t need to have the same dimensions.
p may have dimensions 1x1 or Mx1 or 1xN or MxN, where SA & t are MxN.
OUTPUT:
entropy = specific entropy [ J/(kg*K) ]
EXAMPLE:
SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
t = [28.7856; 28.4329; 22.8103; 10.2600; 6.8863; 4.4036;]
p = [ 10; 50; 125; 250; 600; 1000;]
entropy = gsw_entropy_from_t(SA,t,p)
entropy =
1.0e+002 *
4.003894252787245
3.954381784340642
3.198664981986740
1.467908815899072
0.986473408657975
0.627915087346090
AUTHOR:
David Jackett, Trevor McDougall and Paul Barker [ help@teos-10.org ]
VERSION NUMBER:
3.05 (16th February, 2015)
REFERENCES:
IOC, SCOR and IAPSO, 2010: The international thermodynamic equation of
seawater - 2010: Calculation and use of thermodynamic properties.
Intergovernmental Oceanographic Commission, Manuals and Guides No. 56,
UNESCO (English), 196 pp. Available from the TEOS-10 web site.
See section (2.10) of this TEOS-10 Manual.
The software is available from http://www.TEOS-10.org