SUBROUTINE init_ocean !------------------------------------------------------------------------------! ! Actual revisions: ! ----------------- ! ! ! Former revisions: ! ------------------ ! $Id: init_ocean.f90 139 2007-11-29 09:37:41Z letzel $ ! ! 124 2007-10-19 15:47:46Z raasch ! Bugfix: Initial density rho is calculated ! ! 97 2007-06-21 08:23:15Z raasch ! Initial revision ! ! Description: ! ------------ ! Initialization of quantities needed for the ocean version !------------------------------------------------------------------------------! USE arrays_3d USE control_parameters USE eqn_state_seawater_mod USE grid_variables USE indices IMPLICIT NONE INTEGER :: k REAL :: sa_l, pt_l, rho_l ALLOCATE( hyp(nzb:nzt+1) ) ! !-- Set water density near the ocean surface rho_surface = 1027.62 ! !-- Calculate initial vertical profile of hydrostatic pressure (in Pa) !-- and the reference density (used later in buoyancy term) hyp(nzt+1) = surface_pressure * 100.0 hyp(nzt) = hyp(nzt+1) + rho_surface * g * 0.5 * dzu(nzt+1) rho_reference = rho_surface * 0.5 * dzu(nzt+1) DO k = nzt-1, 0, -1 sa_l = 0.5 * ( sa_init(k) + sa_init(k+1) ) pt_l = 0.5 * ( pt_init(k) + pt_init(k+1) ) rho_l = eqn_state_seawater_func( hyp(k+1), pt_l, sa_l ) hyp(k) = hyp(k+1) + rho_l * g * dzu(k+1) rho_reference = rho_reference + rho_l * dzu(k+1) ENDDO rho_reference = rho_reference / ( zw(nzt) - zu(nzb) ) ! !-- Calculate the reference potential density prho_reference = 0.0 DO k = 0, nzt sa_l = 0.5 * ( sa_init(k) + sa_init(k+1) ) pt_l = 0.5 * ( pt_init(k) + pt_init(k+1) ) prho_reference = prho_reference + dzu(k+1) * & eqn_state_seawater_func( hyp(0), pt_l, sa_l ) ENDDO prho_reference = prho_reference / ( zu(nzt) - zu(nzb) ) ! !-- Calculate the initial potential density, based on the initial !-- temperature and salinity profile CALL eqn_state_seawater END SUBROUTINE init_ocean