convert_StoR {marelac} | R Documentation |
Estimates the conductivity ratio from salinity, temperature and pressure.
The equation is valid over ranges of temperature from -2 to 35 degrees C, pressure of 0 - 1000 bar and salinity 2-42 in the world ocean.
convert_StoR(S = 35, t = 25, p = max(0, P-1.013253), P = 1.013253)
S |
(practical) Salinity, -, |
t |
Temperature, degrees C, |
P |
True Pressure, bar, |
p |
Gauge (or applied) pressure, the pressure referenced against the local atmospheric pressure, bar. |
The conductivity ratio (-), this is the conductivity at (S, t, p), divided by the conductivity at S = 35, t = 15, p = 0.
Pressure here is true pressure, 1 bar (at sea surface), in contrast to hydrostatic pressure in dbar of original formula.
The conductivity ratio for Salinity = 40, t = 40, p
=
1000 is 1.888091.
Karline Soetaert <k.soetaert@nioo.knaw.nl>
Fofonoff NP and Millard RC Jr, 1983. Algorithms for computation of
fundamental properties of seawater. UNESCO technical papers in marine
science, 44, 53 pp.
http://unesdoc.unesco.org/images/0005/000598/059832EB.pdf
convert_AStoPS
, convert_PStoAS
,
convert_RtoS
,
convert_StoCl
,
convert_p
, convert_T
,
convert_StoR(S = 40, t = 40, p = 1000) convert_StoR(S = 35, t = 15, p = 0) # Check values: convert_StoR(S=25,t=10,p=0) # 0.654990 convert_StoR(S=25,t=10,p=100) # 0.662975 convert_StoR(S=25,t=10,p=1000) # 0.712912 convert_StoR(S=35,t=10,p=100) # 0.897778 convert_StoR(S=40,t=10,p=100) # 1.011334