New URL for NEMO forge!   http://forge.nemo-ocean.eu

Since March 2022 along with NEMO 4.2 release, the code development moved to a self-hosted GitLab.
This present forge is now archived and remained online for history.
usrdef_sbc.F90 in branches/2016/dev_CNRS_2016/NEMOGCM/CONFIG/SAS_BIPER/MY_SRC – NEMO

source: branches/2016/dev_CNRS_2016/NEMOGCM/CONFIG/SAS_BIPER/MY_SRC/usrdef_sbc.F90 @ 7355

Last change on this file since 7355 was 7355, checked in by flavoni, 7 years ago

merge branch dev_CNRS_2016 & dev_CNRS_AGRIF_LIM3
File size: 6.7 KB
Line 
1MODULE usrdef_sbc
2   !!======================================================================
3   !!                       ***  MODULE  usrdef_sbc  ***
4   !!
5   !!                     ===  SAS_BIPER configuration  ===
6   !!
7   !! User defined :   surface forcing of a user configuration
8   !!======================================================================
9   !! History :  4.0   ! 2016-03  (S. Flavoni, G. Madec)  user defined interface
10   !!----------------------------------------------------------------------
11
12   !!----------------------------------------------------------------------
13   !!   usr_def_sbc    : user defined surface bounday conditions in SAS_BIPER case
14   !!----------------------------------------------------------------------
15   USE oce             ! ocean dynamics and tracers
16   USE dom_oce         ! ocean space and time domain
17   USE sbc_oce         ! Surface boundary condition: ocean fields
18   USE sbc_ice         ! Surface boundary condition: ice fields
19   USE phycst          ! physical constants
20   USE ice, ONLY       : pfrld, a_i_b
21   USE limthd_dh       ! for CALL lim_thd_snwblow
22   !
23   USE in_out_manager  ! I/O manager
24   USE lib_mpp         ! distribued memory computing library
25   USE lbclnk          ! ocean lateral boundary conditions (or mpp link)
26   USE lib_fortran     ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined)
27
28   IMPLICIT NONE
29   PRIVATE
30
31   PUBLIC   usrdef_sbc_oce      ! routine called by sbcmod.F90 for sbc ocean
32   PUBLIC   usrdef_sbc_ice_tau  ! routine called by sbcice_lim.F90 for ice dynamics
33   PUBLIC   usrdef_sbc_ice_flx  ! routine called by sbcice_lim.F90 for ice thermo
34
35   !! * Substitutions
36#  include "vectopt_loop_substitute.h90"
37   !!----------------------------------------------------------------------
38   !! NEMO/OPA 4.0 , NEMO Consortium (2016)
39   !! $Id$
40   !! Software governed by the CeCILL licence     (NEMOGCM/NEMO_CeCILL.txt)
41   !!----------------------------------------------------------------------
42CONTAINS
43
44   SUBROUTINE usrdef_sbc_oce( kt )
45      !!---------------------------------------------------------------------
46      !!                    ***  ROUTINE usr_def_sbc  ***
47      !!             
48      !! ** Purpose :   provide at each time-step the surface boundary
49      !!              condition, i.e. the momentum, heat and freshwater fluxes.
50      !!
51      !! ** Method  :   all 0 fields, for SAS_BIPER case
52      !!                CAUTION : never mask the surface stress field !
53      !!
54      !! ** Action  : - set to ZERO all the ocean surface boundary condition, i.e.   
55      !!                   utau, vtau, taum, wndm, qns, qsr, emp, sfx
56      !!
57      !!----------------------------------------------------------------------
58      INTEGER, INTENT(in) ::   kt   ! ocean time step
59      !!---------------------------------------------------------------------
60      !
61      IF( kt == nit000 ) THEN
62         !
63         IF(lwp)   WRITE(numout,*)' usrdef_sbc_oce : SAS_BIPER case: NO surface forcing'
64         ! --- oce variables --- !
65         utau(:,:) = 0._wp
66         vtau(:,:) = 0._wp
67         taum(:,:) = 0._wp
68         wndm(:,:) = 0._wp
69         !
70         emp (:,:) = 0._wp
71         sfx (:,:) = 0._wp
72         qns (:,:) = 0._wp
73         qsr (:,:) = 0._wp
74         !
75      ENDIF
76      !
77   END SUBROUTINE usrdef_sbc_oce
78
79   SUBROUTINE usrdef_sbc_ice_tau( kt )
80      !!---------------------------------------------------------------------
81      !!                     ***  ROUTINE usrdef_sbc_ice_tau  ***
82      !!
83      !! ** Purpose :   provide the surface boundary (momentum) condition over sea-ice
84      !!---------------------------------------------------------------------
85      INTEGER, INTENT(in) ::   kt   ! ocean time step
86      !!---------------------------------------------------------------------
87      IF( kt==nit000 .AND. lwp)   WRITE(numout,*)' usrdef_sbc_ice : SAS_BIPER case: NO stress forcing'
88      !
89      utau_ice(:,:) = 0._wp
90      vtau_ice(:,:) = 0._wp
91      !
92   END SUBROUTINE usrdef_sbc_ice_tau
93
94   SUBROUTINE usrdef_sbc_ice_flx( kt )
95      !!---------------------------------------------------------------------
96      !!                     ***  ROUTINE usrdef_sbc_ice_flx  ***
97      !!
98      !! ** Purpose :   provide the surface boundary (flux) condition over sea-ice
99      !!---------------------------------------------------------------------
100      REAL(wp), DIMENSION(:,:), POINTER ::   zsnw       ! snw distribution after wind blowing
101      INTEGER, INTENT(in) ::   kt   ! ocean time step
102      !!---------------------------------------------------------------------
103      CALL wrk_alloc( jpi,jpj, zsnw )
104      !
105      IF( kt==nit000 .AND. lwp)   WRITE(numout,*)' usrdef_sbc_ice : SAS_BIPER case: NO flux forcing'
106      !
107      ! ocean variables (renaming)
108      emp_oce (:,:)   = 0._wp   ! uniform value for freshwater budget (E-P)
109      qsr_oce (:,:)   = 0._wp   ! uniform value for     solar radiation
110      qns_oce (:,:)   = 0._wp   ! uniform value for non-solar radiation
111
112      ! ice variables
113      alb_ice (:,:,:) = 0.7_wp  ! useless
114      qsr_ice (:,:,:) = 0._wp   ! uniform value for     solar radiation
115      qns_ice (:,:,:) = 0._wp   ! uniform value for non-solar radiation
116      sprecip (:,:)   = 0._wp   ! uniform value for snow precip
117      evap_ice(:,:,:) = 0._wp   ! uniform value for sublimation
118
119      ! ice fields deduced from above
120      zsnw(:,:) = 1._wp
121      !!CALL lim_thd_snwblow( pfrld, zsnw )  ! snow distribution over ice after wind blowing
122      emp_ice  (:,:)   = SUM( a_i_b(:,:,:) * evap_ice(:,:,:), dim=3 ) - sprecip(:,:) * zsnw(:,:)
123      emp_oce  (:,:)   = emp_oce(:,:) - sprecip(:,:) * (1._wp - zsnw(:,:) )
124      qevap_ice(:,:,:) =   0._wp
125      qprec_ice(:,:)   =   rhosn * ( sst_m(:,:) * cpic - lfus ) * tmask(:,:,1) !  in J/m3
126      qemp_oce (:,:)   = - emp_oce(:,:) * sst_m(:,:) * rcp
127      qemp_ice (:,:)   =   sprecip(:,:) * zsnw * ( sst_m(:,:) * cpic - lfus ) * tmask(:,:,1) ! solid precip (only)
128
129      ! total fluxes
130      emp_tot (:,:) = emp_ice  + emp_oce
131      qns_tot (:,:) = pfrld(:,:) * qns_oce(:,:) + SUM( a_i_b(:,:,:) * qns_ice(:,:,:), dim=3 ) + qemp_ice(:,:) + qemp_oce(:,:)
132      qsr_tot (:,:) = pfrld(:,:) * qsr_oce(:,:) + SUM( a_i_b(:,:,:) * qsr_ice(:,:,:), dim=3 )
133
134      !--------------------------------------------------------------------
135      ! FRACTIONs of net shortwave radiation which is not absorbed in the
136      ! thin surface layer and penetrates inside the ice cover
137      ! ( Maykut and Untersteiner, 1971 ; Ebert and Curry, 1993 )
138      fr1_i0(:,:) = ( 0.18 * ( 1.0 - cldf_ice ) + 0.35 * cldf_ice )
139      fr2_i0(:,:) = ( 0.82 * ( 1.0 - cldf_ice ) + 0.65 * cldf_ice )
140
141      CALL wrk_dealloc( jpi,jpj, zsnw )
142
143   END SUBROUTINE usrdef_sbc_ice_flx
144
145
146   !!======================================================================
147END MODULE usrdef_sbc
Note: See TracBrowser for help on using the repository browser.