MODULE icethd_zdf !!====================================================================== !! *** MODULE icethd_zdf *** !! sea-ice: master routine for vertical heat diffusion in sea ice !!====================================================================== !! History : 4.0 ! 2018 (C. Rousset) Original code SI3 !!---------------------------------------------------------------------- #if defined key_si3 !!---------------------------------------------------------------------- !! 'key_si3' SI3 sea-ice model !!---------------------------------------------------------------------- !! ice_thd_zdf : select the appropriate routine for vertical heat diffusion calculation !! ice_thd_zdf_BL99 : heat diffusion from Bitz and Lipscomb 1999 !! ice_thd_zdf_init : initialization !!---------------------------------------------------------------------- USE dom_oce ! ocean space and time domain USE phycst ! physical constants (ocean directory) USE ice ! sea-ice: variables USE icethd_zdf_BL99 ! sea-ice: vertical diffusion (Bitz and Lipscomb, 1999) ! USE in_out_manager ! I/O manager USE lib_mpp ! MPP library USE lib_fortran ! fortran utilities (glob_sum + no signed zero) IMPLICIT NONE PRIVATE PUBLIC ice_thd_zdf ! called by icethd PUBLIC ice_thd_zdf_init ! called by icestp INTEGER :: nice_zdf ! Choice of the type of vertical heat diffusion formulation ! ! associated indices: INTEGER, PARAMETER :: np_BL99 = 1 ! Bitz and Lipscomb (1999) !! INTEGER, PARAMETER :: np_XXXX = 2 !!** namelist (namthd_zdf) ** LOGICAL :: ln_zdf_BL99 ! Heat diffusion follows Bitz and Lipscomb (1999) !!---------------------------------------------------------------------- !! NEMO/ICE 4.0 , NEMO Consortium (2018) !! $Id$ !! Software governed by the CeCILL license (see ./LICENSE) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE ice_thd_zdf !!------------------------------------------------------------------- !! *** ROUTINE ice_thd_zdf *** !! !! ** Purpose : select the appropriate routine for the computation !! of vertical diffusion !!------------------------------------------------------------------- ! SELECT CASE ( nice_zdf ) ! Choose the vertical heat diffusion solver ! ! !-------------! CASE( np_BL99 ) ! BL99 solver ! ! !-------------! IF( .NOT.ln_cndflx ) THEN ! No conduction flux ==> default option CALL ice_thd_zdf_BL99( np_cnd_OFF ) ELSEIF( ln_cndflx .AND. .NOT.ln_cndemulate ) THEN ! Conduction flux as surface boundary condition ==> Met Office default option CALL ice_thd_zdf_BL99( np_cnd_ON ) ELSEIF( ln_cndflx .AND. ln_cndemulate ) THEN ! Conduction flux is emulated CALL ice_thd_zdf_BL99( np_cnd_EMU ) CALL ice_thd_zdf_BL99( np_cnd_ON ) ENDIF ! END SELECT ! END SUBROUTINE ice_thd_zdf SUBROUTINE ice_thd_zdf_init !!----------------------------------------------------------------------- !! *** ROUTINE ice_thd_zdf_init *** !! !! ** Purpose : Physical constants and parameters associated with !! ice thermodynamics !! !! ** Method : Read the namthd_zdf namelist and check the parameters !! called at the first timestep (nit000) !! !! ** input : Namelist namthd_zdf !!------------------------------------------------------------------- INTEGER :: ios, ioptio ! Local integer !! NAMELIST/namthd_zdf/ ln_zdf_BL99, ln_cndi_U64, ln_cndi_P07, rn_cnd_s, rn_kappa_i !!------------------------------------------------------------------- ! REWIND( numnam_ice_ref ) ! Namelist namthd_zdf in reference namelist : Ice thermodynamics READ ( numnam_ice_ref, namthd_zdf, IOSTAT = ios, ERR = 901) 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namthd_zdf in reference namelist' ) REWIND( numnam_ice_cfg ) ! Namelist namthd_zdf in configuration namelist : Ice thermodynamics READ ( numnam_ice_cfg, namthd_zdf, IOSTAT = ios, ERR = 902 ) 902 IF( ios > 0 ) CALL ctl_nam ( ios , 'namthd_zdf in configuration namelist' ) IF(lwm) WRITE( numoni, namthd_zdf ) ! IF(lwp) THEN ! control print WRITE(numout,*) WRITE(numout,*) 'ice_thd_zdf_init: Ice vertical heat diffusion' WRITE(numout,*) '~~~~~~~~~~~~~~~~' WRITE(numout,*) ' Namelist namthd_zdf:' WRITE(numout,*) ' Bitz and Lipscomb (1999) formulation ln_zdf_BL99 = ', ln_zdf_BL99 WRITE(numout,*) ' thermal conductivity in the ice (Untersteiner 1964) ln_cndi_U64 = ', ln_cndi_U64 WRITE(numout,*) ' thermal conductivity in the ice (Pringle et al 2007) ln_cndi_P07 = ', ln_cndi_P07 WRITE(numout,*) ' thermal conductivity in the snow rn_cnd_s = ', rn_cnd_s WRITE(numout,*) ' extinction radiation parameter in sea ice rn_kappa_i = ', rn_kappa_i ENDIF ! IF ( ( ln_cndi_U64 .AND. ln_cndi_P07 ) .OR. ( .NOT. ln_cndi_U64 .AND. .NOT. ln_cndi_P07 ) ) THEN CALL ctl_stop( 'ice_thd_zdf_init: choose 1 and only 1 formulation for thermal conduction (ln_cndi_U64 or ln_cndi_P07)' ) ENDIF ! !== set the choice of ice vertical thermodynamic formulation ==! ioptio = 0 IF( ln_zdf_BL99 ) THEN ; ioptio = ioptio + 1 ; nice_zdf = np_BL99 ; ENDIF ! BL99 thermodynamics (linear liquidus + constant thermal properties) !! IF( ln_zdf_XXXX ) THEN ; ioptio = ioptio + 1 ; nice_zdf = np_XXXX ; ENDIF IF( ioptio /= 1 ) CALL ctl_stop( 'ice_thd_init: one and only one ice thermo option has to be defined ' ) ! END SUBROUTINE ice_thd_zdf_init #else !!---------------------------------------------------------------------- !! Default option Dummy Module No SI3 sea-ice model !!---------------------------------------------------------------------- #endif !!====================================================================== END MODULE icethd_zdf