c enthalpy enthalpy_cold enthalpy_cts enthalpy_liquid enthalpy_permissive EnthalpyConverter is_temperate is_temperate_relaxed L m_beta m_c_i m_c_w m_do_cold_ice_methods m_g m_L m_p_air m_rho_i m_T_0 m_T_melting m_T_tolerance melting_temperature pressure pressure pressure_adjusted_temperature Ptr temperature temperature_cold validate_E_P validate_T_omega_P water_fraction ~EnthalpyConverter

enthalpy() double pism::EnthalpyConverter::enthalpy ( double  T, double  omega, double  P  ) const Compute enthalpy from absolute temperature, liquid water fraction, and pressure. This is an inverse function to the functions \(T(E,p)\) and \(\omega(E,p)\) [AschwandenBuelerKhroulevBlatter]. It returns: \[E(T,\omega,p) = \begin{cases} c_i (T - T_0), & T < T_m(p) \quad\text{and}\quad \omega = 0, \\ E_s(p) + \omega L, & T = T_m(p) \quad\text{and}\quad \omega \ge 0. \end{cases} \] Certain cases are not allowed and throw exceptions: \(T<=0\) (error code 1) \(\omega < 0\) or \(\omega > 1\) (error code 2) \(T>T_m(p)\) (error code 3) \(T<T_m(p)\) and \(\omega > 0\) (error code 4) These inequalities may be violated in the sixth digit or so, however. Definition at line 237 of file EnthalpyConverter.cc. References enthalpy_cold(), enthalpy_cts(), L(), melting_temperature(), and validate_T_omega_P(). Referenced by enthalpy_permissive().