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usrdef_sbc.F90 in NEMO/branches/2019/dev_r10721_KERNEL-02_Storkey_Coward_IMMERSE_first_steps/tests/BENCH/MY_SRC – NEMO

source: NEMO/branches/2019/dev_r10721_KERNEL-02_Storkey_Coward_IMMERSE_first_steps/tests/BENCH/MY_SRC/usrdef_sbc.F90 @ 10976

Last change on this file since 10976 was 10976, checked in by acc, 4 years ago

2019/dev_r10721_KERNEL-02_Storkey_Coward_IMMERSE_first_steps : Convert usrdef routines in tests MY_SRC directories to enable SETTE compilation and testing of TEST-CASES (non-AGRIF varieties at least; enables ISOMIP, OVERFLOW and LOCK_EXCHANGE)

File size: 7.8 KB
Line 
1MODULE usrdef_sbc
2   !!======================================================================
3   !!                       ***  MODULE  usrdef_sbc  ***
4   !!
5   !!                      ===  BENCH configuration  ===
6   !!
7   !! User defined :   surface forcing of a user configuration
8   !!======================================================================
9   !! History :  4.0   !
10   !!----------------------------------------------------------------------
11
12   !!----------------------------------------------------------------------
13   !!   usr_def_sbc    : user defined surface bounday conditions in BENCH case
14   !!----------------------------------------------------------------------
15   USE par_oce        ! ocean space and time domain
16   USE dom_oce       
17   USE oce             ! ocean dynamics and tracers
18   USE sbc_oce         ! Surface boundary condition: ocean fields
19   USE sbc_ice         ! Surface boundary condition: ocean fields
20   USE in_out_manager  ! I/O manager
21   USE phycst          ! physical constants
22   USE lib_mpp         ! MPP library
23   USE lbclnk          ! lateral boundary conditions - mpp exchanges
24
25#if defined key_si3
26   USE ice, ONLY       : at_i_b, a_i_b
27#endif
28
29   IMPLICIT NONE
30   PRIVATE
31
32   PUBLIC   usrdef_sbc_oce      ! routine called in sbcmod module
33   PUBLIC   usrdef_sbc_ice_tau  ! routine called by sbcice_lim.F90 for ice dynamics
34   PUBLIC   usrdef_sbc_ice_flx  ! routine called by sbcice_lim.F90 for ice thermo
35
36   !!----------------------------------------------------------------------
37   !! NEMO/OPA 4.0 , NEMO Consortium (2016)
38   !! $Id$
39   !! Software governed by the CeCILL licence     (NEMOGCM/NEMO_CeCILL.txt)
40   !!----------------------------------------------------------------------
41CONTAINS
42
43   SUBROUTINE usrdef_sbc_oce( kt, Kbb )
44      !!---------------------------------------------------------------------
45      !!                    ***  ROUTINE usr_def_sbc  ***
46      !!             
47      !! ** Purpose :   provide at each time-step the surface boundary
48      !!              condition, i.e. the momentum, heat and freshwater fluxes.
49      !!
50      !! ** Method  :   all 0 fields, for BENCH case
51      !!                CAUTION : never mask the surface stress field !
52      !!
53      !! ** Action  : - set to ZERO all the ocean surface boundary condition, i.e.   
54      !!                   utau, vtau, taum, wndm, qns, qsr, emp, sfx
55      !!
56      !!----------------------------------------------------------------------
57      INTEGER, INTENT(in) ::   kt   ! ocean time step
58      INTEGER, INTENT(in) ::   Kbb  ! ocean time index
59      !!---------------------------------------------------------------------
60      !     
61      IF( kt == nit000 ) THEN
62         !
63         IF(lwp) WRITE(numout,*)' usr_sbc : BENCH case: surface forcing'
64         IF(lwp) WRITE(numout,*)' ~~~~~~~~~~~   vtau = taum = wndm = qns = qsr = emp = sfx = 0'
65         !
66         utau(:,:) = 0._wp
67         vtau(:,:) = 0._wp
68         taum(:,:) = 0._wp
69         wndm(:,:) = 0._wp
70         !
71         emp (:,:) = 0._wp
72         sfx (:,:) = 0._wp
73         qns (:,:) = 0._wp
74         qsr (:,:) = 0._wp
75         !
76         utau_b(:,:) = 0._wp 
77         vtau_b(:,:) = 0._wp
78         emp_b (:,:) = 0._wp
79         sfx_b (:,:) = 0._wp
80         qns_b (:,:) = 0._wp
81         !
82      ENDIF
83     
84      !
85   END SUBROUTINE usrdef_sbc_oce
86
87   
88   SUBROUTINE usrdef_sbc_ice_tau( kt )
89      !!---------------------------------------------------------------------
90      !!                     ***  ROUTINE usrdef_sbc_ice_tau  ***
91      !!
92      !! ** Purpose :   provide the surface boundary (momentum) condition over
93      !sea-ice
94      !!---------------------------------------------------------------------
95      INTEGER, INTENT(in) ::   kt   ! ocean time step
96      !
97      REAL(wp), DIMENSION(jpi,jpj) ::   z2d   ! 2D workspace
98      INTEGER  ::   ji, jj
99      !!---------------------------------------------------------------------
100#if defined key_si3
101      IF( kt==nit000 .AND. lwp)   WRITE(numout,*)' usrdef_sbc_ice : BENCH case: constant stress forcing'
102      !
103      ! define unique value on each point. z2d ranging from 0.05 to -0.05
104      DO jj = 1, jpj
105         DO ji = 1, jpi
106            z2d(ji,jj) = 0.1 * ( 0.5 - REAL( nimpp + ji - 1 + ( njmpp + jj - 2 ) * jpiglo, wp ) / REAL( jpiglo * jpjglo, wp ) )
107         ENDDO
108      ENDDO
109      utau_ice(:,:) = 0.1_wp +  z2d(:,:)
110      vtau_ice(:,:) = 0.1_wp +  z2d(:,:)
111
112      CALL lbc_lnk_multi( 'usrdef_sbc', utau_ice, 'U', -1., vtau_ice, 'V', -1. )
113#endif
114      !
115   END SUBROUTINE usrdef_sbc_ice_tau
116
117   
118   SUBROUTINE usrdef_sbc_ice_flx( kt, phs, phi )
119      !!---------------------------------------------------------------------
120      !!                     ***  ROUTINE usrdef_sbc_ice_flx  ***
121      !!
122      !! ** Purpose :   provide the surface boundary (flux) condition over
123      !sea-ice
124      !!---------------------------------------------------------------------
125      INTEGER, INTENT(in) ::   kt   ! ocean time step
126      REAL(wp), DIMENSION(:,:,:), INTENT(in)  ::   phs    ! snow thickness
127      REAL(wp), DIMENSION(:,:,:), INTENT(in)  ::   phi    ! ice thickness
128      !!
129      REAL(wp) ::   zfr1, zfr2                 ! local variables
130      REAL(wp), DIMENSION(jpi,jpj) ::   zsnw   ! snw distribution after wind blowing
131      !!---------------------------------------------------------------------
132      !
133#if defined key_si3
134      IF( kt==nit000 .AND. lwp)   WRITE(numout,*)' usrdef_sbc_ice : BENCH case: NO flux forcing'
135      !
136      ! ocean variables (renaming)
137      emp_oce (:,:)   = 0._wp   ! uniform value for freshwater budget (E-P)
138      qsr_oce (:,:)   = 0._wp   ! uniform value for     solar radiation
139      qns_oce (:,:)   = 0._wp   ! uniform value for non-solar radiation
140
141      ! ice variables
142      alb_ice (:,:,:) = 0.7_wp  ! useless
143      qsr_ice (:,:,:) = 0._wp   ! uniform value for     solar radiation
144      qns_ice (:,:,:) = 0._wp   ! uniform value for non-solar radiation
145      sprecip (:,:)   = 0._wp   ! uniform value for snow precip
146      evap_ice(:,:,:) = 0._wp   ! uniform value for sublimation
147
148      ! ice fields deduced from above
149      zsnw(:,:) = 1._wp
150      !!CALL lim_thd_snwblow( at_i_b, zsnw )  ! snow distribution over ice after
151      !wind blowing
152      emp_ice  (:,:)   = SUM( a_i_b(:,:,:) * evap_ice(:,:,:), dim=3 ) - sprecip(:,:) * zsnw(:,:)
153      emp_oce  (:,:)   = emp_oce(:,:) - sprecip(:,:) * (1._wp - zsnw(:,:) )
154      qevap_ice(:,:,:) =   0._wp
155      qprec_ice(:,:)   =   rhos * ( sst_m(:,:) * rcpi - rLfus ) * tmask(:,:,1) !  in J/m3
156      qemp_oce (:,:)   = - emp_oce(:,:) * sst_m(:,:) * rcp
157      qemp_ice (:,:)   =   sprecip(:,:) * zsnw * ( sst_m(:,:) * rcpi - rLfus ) * tmask(:,:,1) ! solid precip (only)
158
159      ! total fluxes
160      emp_tot (:,:) = emp_ice  + emp_oce
161      qns_tot (:,:) = at_i_b(:,:) * qns_oce(:,:) + SUM( a_i_b(:,:,:) * qns_ice(:,:,:), dim=3 ) + qemp_ice(:,:) + qemp_oce(:,:)
162      qsr_tot (:,:) = at_i_b(:,:) * qsr_oce(:,:) + SUM( a_i_b(:,:,:) * qsr_ice(:,:,:), dim=3 )
163
164      ! --- shortwave radiation transmitted below the surface (W/m2, see Grenfell Maykut 77) --- !
165      zfr1 = ( 0.18 * ( 1.0 - cldf_ice ) + 0.35 * cldf_ice )            ! transmission when hi>10cm
166      zfr2 = ( 0.82 * ( 1.0 - cldf_ice ) + 0.65 * cldf_ice )            ! zfr2 such that zfr1 + zfr2 to equal 1
167      !
168      WHERE    ( phs(:,:,:) <= 0._wp .AND. phi(:,:,:) <  0.1_wp )       ! linear decrease from hi=0 to 10cm 
169         qtr_ice_top(:,:,:) = qsr_ice(:,:,:) * ( zfr1 + zfr2 * ( 1._wp - phi(:,:,:) * 10._wp ) )
170      ELSEWHERE( phs(:,:,:) <= 0._wp .AND. phi(:,:,:) >= 0.1_wp )       ! constant (zfr1) when hi>10cm
171         qtr_ice_top(:,:,:) = qsr_ice(:,:,:) * zfr1
172      ELSEWHERE                                                         ! zero when hs>0
173         qtr_ice_top(:,:,:) = 0._wp 
174      END WHERE
175#endif
176
177   END SUBROUTINE usrdef_sbc_ice_flx
178
179   !!======================================================================
180END MODULE usrdef_sbc
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