gsw_t_from_pt0
in-situ temperature from potential temperature with p_ref = 0 dbar
Contents
USAGE:
t = gsw_t_from_pt0(SA,pt0,p)
DESCRIPTION:
Calculates in-situ temperature from potential temperature with a
reference pressure of 0 dbar of seawater.
It is also possible to calculate in-situ temperature from potential
temparature using the function gsw_pt_from_t. In this case it would be
called with Absolute Salinity, SA, potential temperature referenced to
0 dbar, pt0, and the in-situ pressure (i.e. gsw_pt_from_t(SA,pt0,0,p)).
INPUT:
SA = Absolute Salinity [ g/kg ]
pt0 = potential temperature [ deg C ]
with reference sea pressure (pr) = 0 dbar.
Note. The reference sea pressure of the output, pt0, is zero dbar.
p = sea pressure [ dbar ]
( i.e. absolute pressure - 10.1325 dbar )
SA & pt0 need to have the same dimensions.
p may have dimensions 1x1 or Mx1 or 1xN or MxN, where SA and pt0 are MxN.
OUTPUT:
t = in-situ temperature (ITS-90) [ deg C ]
EXAMPLE:
SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
pt0 = [28.8099; 28.4392; 22.7862; 10.2262; 6.8272; 4.3236;]
p = [ 10; 50; 125; 250; 600; 1000;]
t = gsw_t_from_pt0(SA,pt0,p)
t =
28.812304839034994
28.451122322781689
22.811570627670207
10.255668503647893
6.884260601542640
4.402682363977228
AUTHOR:
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 sections 3.1 and 3.3 of this TEOS-10 Manual.
The software is available from http://www.TEOS-10.org