gsw_frazil_ratios_adiabatic_poly {gsw} | R Documentation |
Ratios of changes in SA
, CT
and p
that occur
when frazil ice forms due to changes in pressure upon
the mixture of seawater and ice.
gsw_frazil_ratios_adiabatic_poly(SA, p, w_Ih)
SA |
Absolute Salinity [ g/kg ] |
p |
sea pressure [dbar], i.e. absolute pressure [dbar] minus 10.1325 dbar |
w_Ih |
initial mass fraction (ice) / (water + ice) |
The present R function works with a wrapper to a C function contained within the GSW-C system (Version 3.05-4 dated 2017-08-07, available at https://github.com/TEOS-10/GSW-C, as git commit '5b4d959e54031f9e972f3e863f63e67fa4f5bfec'), which stems from the GSW-Fortran system (https://github.com/TEOS-10/GSW-Fortran) which in turn stems from the GSW-Matlab system (https://github.com/TEOS-10/GSW-Matlab). Consult http://www.teos-10.org to learn more about these software systems, their authorships, and the science behind it all.
a list containing dSA_dCT_frazil
, dSA_dP_frazil
and dCT_dP_frazil
.
http://www.teos-10.org/pubs/gsw/html/gsw_frazil_ratios_adiabatic_poly.html
SA <- c( 34.7118, 34.8915, 35.0256, 34.8472, 34.7366, 34.7324) p <- c( 10, 50, 125, 250, 600, 1000) w_Ih <- c( 0.9, 0.84, 0.4, 0.25, 0.05, 0.01) r <- gsw_frazil_ratios_adiabatic_poly(SA, p, w_Ih) expect_equal(r$dSA_dCT_frazil, c(3.035308957896530, 1.932631198810934, 0.613220785586734, 0.516106221687200, 0.436657158542033, 0.425827675768018)) expect_equal(r$dSA_dP_frazil/1e-6, c(-0.197512213108610, -0.133280971893621, -0.045599951957139, -0.038820466574251, -0.033548047632788, -0.033352365425407)) expect_equal(r$dCT_dP_frazil/1e-7, c(-0.650715350062703, -0.689634794137768, -0.743613932027895, -0.752179782823459, -0.768292629045686, -0.783236208526200))