Detailed Description

Compute the specific volume of sea water (in m^3/kg), or its anomaly from a reference value, using a simple linear equation of state from salinity (in psu), potential temperature (in deg C) and pressure [Pa].

Definition at line 34 of file MOM_EOS_linear.F90.

Private functions
subroutine	calculate_spec_vol_scalar_linear (T, S, pressure, specvol, Rho_T0_S0, dRho_dT, dRho_dS, spv_ref)
	This subroutine computes the in situ specific volume of sea water (specvol in [m3 kg-1]) from salinity (S [PSU]), potential temperature (T [degC]) and pressure [Pa], using a trivial linear equation of state for density. If spv_ref is present, specvol is an anomaly from spv_ref. More...

subroutine	calculate_spec_vol_array_linear (T, S, pressure, specvol, start, npts, Rho_T0_S0, dRho_dT, dRho_dS, spv_ref)
	This subroutine computes the in situ specific volume of sea water (specvol in [m3 kg-1]) from salinity (S [PSU]), potential temperature (T [degC]) and pressure [Pa], using a trivial linear equation of state for density. If spv_ref is present, specvol is an anomaly from spv_ref. More...

Detailed Description

Compute the specific volume of sea water (in m^3/kg), or its anomaly from a reference value, using a simple linear equation of state from salinity (in psu), potential temperature (in deg C) and pressure [Pa].

Definition at line 34 of file MOM_EOS_linear.F90.

Functions and subroutines

◆ calculate_spec_vol_array_linear()

subroutine mom_eos_linear::calculate_spec_vol_linear::calculate_spec_vol_array_linear	(	real, dimension(:), intent(in)	T,
		real, dimension(:), intent(in)	S,
		real, dimension(:), intent(in)	pressure,
		real, dimension(:), intent(out)	specvol,
		integer, intent(in)	start,
		integer, intent(in)	npts,
		real, intent(in)	Rho_T0_S0,
		real, intent(in)	dRho_dT,
		real, intent(in)	dRho_dS,
		real, intent(in), optional	spv_ref
	)

private

This subroutine computes the in situ specific volume of sea water (specvol in [m3 kg-1]) from salinity (S [PSU]), potential temperature (T [degC]) and pressure [Pa], using a trivial linear equation of state for density. If spv_ref is present, specvol is an anomaly from spv_ref.

Parameters

[in]	t	potential temperature relative to the surface [degC].
[in]	s	Salinity [PSU].
[in]	pressure	Pressure [Pa].
[out]	specvol	in situ specific volume [m3 kg-1].
[in]	start	the starting point in the arrays.
[in]	npts	the number of values to calculate.
[in]	rho_t0_s0	The density at T=0, S=0 [kg m-3].
[in]	drho_dt	The derivatives of density with temperature [kg m-3 degC-1].
[in]	drho_ds	The derivatives of density with salinity [kg m-3 ppt-1].
[in]	spv_ref	A reference specific volume [m3 kg-1].

Definition at line 136 of file MOM_EOS_linear.F90.

   real, dimension(:), intent(in)  :: T        !< potential temperature relative to the surface
                                               !! [degC].
   real, dimension(:), intent(in)  :: S        !< Salinity [PSU].
   real, dimension(:), intent(in)  :: pressure !< Pressure [Pa].
   real, dimension(:), intent(out) :: specvol  !< in situ specific volume [m3 kg-1].
   integer,            intent(in)  :: start    !< the starting point in the arrays.
   integer,            intent(in)  :: npts     !< the number of values to calculate.
   real,               intent(in)  :: Rho_T0_S0 !< The density at T=0, S=0 [kg m-3].
   real,               intent(in)  :: dRho_dT  !< The derivatives of density with temperature [kg m-3 degC-1].
   real,               intent(in)  :: dRho_dS  !< The derivatives of density with salinity [kg m-3 ppt-1].
   real,     optional, intent(in)  :: spv_ref  !< A reference specific volume [m3 kg-1].
   ! Local variables
   integer :: j
  
   if (present(spv_ref)) then ; do j=start,start+npts-1
     specvol(j) = ((1.0 - rho_t0_s0*spv_ref) + spv_ref*(drho_dt*t(j) + drho_ds*s(j))) / &
                  ( rho_t0_s0 + (drho_dt*t(j) + drho_ds*s(j)))
   enddo ; else ; do j=start,start+npts-1
     specvol(j) = 1.0 / ( rho_t0_s0 + (drho_dt*t(j) + drho_ds*s(j)))
   enddo ; endif
  

◆ calculate_spec_vol_scalar_linear()

subroutine mom_eos_linear::calculate_spec_vol_linear::calculate_spec_vol_scalar_linear	(	real, intent(in)	T,
		real, intent(in)	S,
		real, intent(in)	pressure,
		real, intent(out)	specvol,
		real, intent(in)	Rho_T0_S0,
		real, intent(in)	dRho_dT,
		real, intent(in)	dRho_dS,
		real, intent(in), optional	spv_ref
	)

private

This subroutine computes the in situ specific volume of sea water (specvol in [m3 kg-1]) from salinity (S [PSU]), potential temperature (T [degC]) and pressure [Pa], using a trivial linear equation of state for density. If spv_ref is present, specvol is an anomaly from spv_ref.

Parameters

[in]	t	potential temperature relative to the surface [degC].
[in]	s	Salinity [PSU].
[in]	pressure	Pressure [Pa].
[out]	specvol	In situ specific volume [m3 kg-1].
[in]	rho_t0_s0	The density at T=0, S=0 [kg m-3].
[in]	drho_dt	The derivatives of density with temperature [kg m-3 degC-1].
[in]	drho_ds	The derivatives of density with salinity [kg m-3 ppt-1].
[in]	spv_ref	A reference specific volume [m3 kg-1].

Definition at line 109 of file MOM_EOS_linear.F90.

   real,    intent(in)  :: T        !< potential temperature relative to the surface
                                    !! [degC].
   real,    intent(in)  :: S        !< Salinity [PSU].
   real,    intent(in)  :: pressure !< Pressure [Pa].
   real,    intent(out) :: specvol  !< In situ specific volume [m3 kg-1].
   real,    intent(in)  :: Rho_T0_S0 !< The density at T=0, S=0 [kg m-3].
   real,    intent(in)  :: dRho_dT  !< The derivatives of density with temperature [kg m-3 degC-1].
   real,    intent(in)  :: dRho_dS  !< The derivatives of density with salinity [kg m-3 ppt-1].
   real, optional, intent(in)  :: spv_ref  !< A reference specific volume [m3 kg-1].
   ! Local variables
   integer :: j
  
   if (present(spv_ref)) then
     specvol = ((1.0 - rho_t0_s0*spv_ref) + spv_ref*(drho_dt*t + drho_ds*s)) / &
              ( rho_t0_s0 + (drho_dt*t + drho_ds*s))
   else
     specvol = 1.0 / ( rho_t0_s0 + (drho_dt*t + drho_ds*s))
   endif
  

The documentation for this interface was generated from the following file:

/home/cermak/src/MOM6.devrob/src/equation_of_state/MOM_EOS_linear.F90

Detailed Description

Private functions

Detailed Description

Functions and subroutines

◆ calculate_spec_vol_array_linear()

◆ calculate_spec_vol_scalar_linear()