- Timestamp:
- 2016-07-19T10:38:35+02:00 (8 years ago)
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- 1 edited
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branches/NERC/dev_r5549_BDY_ZEROGRAD/NEMOGCM/NEMO/OPA_SRC/DYN/dynspg.F90
r5120 r6808 9 9 10 10 !!---------------------------------------------------------------------- 11 !! dyn_spg : update the dynamics trend with the lateral diffusion12 !! dyn_spg_ ctl: initialization, namelist read, and parameters control11 !! dyn_spg : update the dynamics trend with surface pressure gradient 12 !! dyn_spg_init: initialization, namelist read, and parameters control 13 13 !!---------------------------------------------------------------------- 14 14 USE oce ! ocean dynamics and tracers variables … … 18 18 USE sbc_oce ! surface boundary condition: ocean 19 19 USE sbcapr ! surface boundary condition: atmospheric pressure 20 USE dynspg_oce ! surface pressure gradient variables21 20 USE dynspg_exp ! surface pressure gradient (dyn_spg_exp routine) 22 21 USE dynspg_ts ! surface pressure gradient (dyn_spg_ts routine) 23 USE dynspg_flt ! surface pressure gradient (dyn_spg_flt routine) 24 USE dynadv ! dynamics: vector invariant versus flux form 25 USE dynhpg, ONLY: ln_dynhpg_imp 26 USE sbctide 27 USE updtide 22 USE sbctide ! 23 USE updtide ! 28 24 USE trd_oce ! trends: ocean variables 29 25 USE trddyn ! trend manager: dynamics … … 32 28 USE in_out_manager ! I/O manager 33 29 USE lib_mpp ! MPP library 34 USE solver ! solver initialization35 30 USE wrk_nemo ! Memory Allocation 36 31 USE timing ! Timing 37 32 38 39 33 IMPLICIT NONE 40 34 PRIVATE … … 45 39 INTEGER :: nspg = 0 ! type of surface pressure gradient scheme defined from lk_dynspg_... 46 40 41 ! ! Parameter to control the surface pressure gradient scheme 42 INTEGER, PARAMETER :: np_TS = 1 ! split-explicit time stepping (Time-Splitting) 43 INTEGER, PARAMETER :: np_EXP = 0 ! explicit time stepping 44 INTEGER, PARAMETER :: np_NO =-1 ! no surface pressure gradient, no scheme 45 47 46 !! * Substitutions 48 # include "domzgr_substitute.h90"49 47 # include "vectopt_loop_substitute.h90" 50 48 !!---------------------------------------------------------------------- … … 55 53 CONTAINS 56 54 57 SUBROUTINE dyn_spg( kt , kindic)55 SUBROUTINE dyn_spg( kt ) 58 56 !!---------------------------------------------------------------------- 59 57 !! *** ROUTINE dyn_spg *** 60 58 !! 61 !! ** Purpose : achieve the momentum time stepping by computing the 62 !! last trend, the surface pressure gradient including the 63 !! atmospheric pressure forcing (ln_apr_dyn=T), and performing 64 !! the Leap-Frog integration. 65 !!gm In the current version only the filtered solution provide 66 !!gm the after velocity, in the 2 other (ua,va) are still the trends 59 !! ** Purpose : compute surface pressure gradient including the 60 !! atmospheric pressure forcing (ln_apr_dyn=T). 67 61 !! 68 !! ** Method : Three schemes: 69 !! - explicit computation : the spg is evaluated at now 70 !! - filtered computation : the Roulet & madec (2000) technique is used 71 !! - split-explicit computation: a time splitting technique is used 62 !! ** Method : Two schemes: 63 !! - explicit : the spg is evaluated at now 64 !! - split-explicit : a time splitting technique is used 72 65 !! 73 66 !! ln_apr_dyn=T : the atmospheric pressure forcing is applied … … 77 70 !! Note that as all external forcing a time averaging over a two rdt 78 71 !! period is used to prevent the divergence of odd and even time step. 79 !! 80 !! N.B. : When key_esopa is used all the scheme are tested, regardless 81 !! of the physical meaning of the results. 82 !!---------------------------------------------------------------------- 83 ! 72 !!---------------------------------------------------------------------- 84 73 INTEGER, INTENT(in ) :: kt ! ocean time-step index 85 INTEGER, INTENT( out) :: kindic ! solver flag86 74 ! 87 75 INTEGER :: ji, jj, jk ! dummy loop indices … … 93 81 IF( nn_timing == 1 ) CALL timing_start('dyn_spg') 94 82 ! 95 96 !!gm NOTA BENE : the dynspg_exp and dynspg_ts should be modified so that97 !!gm they return the after velocity, not the trends (as in trazdf_imp...)98 !!gm In this case, change/simplify dynnxt99 100 101 83 IF( l_trddyn ) THEN ! temporary save of ta and sa trends 102 CALL wrk_alloc( jpi, jpj, jpk,ztrdu, ztrdv )84 CALL wrk_alloc( jpi,jpj,jpk, ztrdu, ztrdv ) 103 85 ztrdu(:,:,:) = ua(:,:,:) 104 86 ztrdv(:,:,:) = va(:,:,:) 105 87 ENDIF 106 88 ! 107 89 IF( ln_apr_dyn & ! atmos. pressure 108 .OR. ( .NOT.l k_dynspg_ts .AND. (ln_tide_pot .AND. lk_tide) ) & ! tide potential (no time slitting)90 .OR. ( .NOT.ln_dynspg_ts .AND. (ln_tide_pot .AND. lk_tide) ) & ! tide potential (no time slitting) 109 91 .OR. nn_ice_embd == 2 ) THEN ! embedded sea-ice 110 92 ! … … 116 98 END DO 117 99 ! 118 IF( ln_apr_dyn .AND. (.NOT. lk_dynspg_ts) ) THEN!== Atmospheric pressure gradient (added later in time-split case) ==!100 IF( ln_apr_dyn .AND. .NOT.ln_dynspg_ts ) THEN !== Atmospheric pressure gradient (added later in time-split case) ==! 119 101 zg_2 = grav * 0.5 120 102 DO jj = 2, jpjm1 ! gradient of Patm using inverse barometer ssh 121 103 DO ji = fs_2, fs_jpim1 ! vector opt. 122 104 spgu(ji,jj) = spgu(ji,jj) + zg_2 * ( ssh_ib (ji+1,jj) - ssh_ib (ji,jj) & 123 & + ssh_ibb(ji+1,jj) - ssh_ibb(ji,jj) ) /e1u(ji,jj)105 & + ssh_ibb(ji+1,jj) - ssh_ibb(ji,jj) ) * r1_e1u(ji,jj) 124 106 spgv(ji,jj) = spgv(ji,jj) + zg_2 * ( ssh_ib (ji,jj+1) - ssh_ib (ji,jj) & 125 & + ssh_ibb(ji,jj+1) - ssh_ibb(ji,jj) ) /e2v(ji,jj)107 & + ssh_ibb(ji,jj+1) - ssh_ibb(ji,jj) ) * r1_e2v(ji,jj) 126 108 END DO 127 109 END DO … … 129 111 ! 130 112 ! !== tide potential forcing term ==! 131 IF( .NOT.l k_dynspg_ts .AND. ( ln_tide_pot .AND. lk_tide ) ) THEN ! N.B. added directly at sub-time-step in ts-case113 IF( .NOT.ln_dynspg_ts .AND. ( ln_tide_pot .AND. lk_tide ) ) THEN ! N.B. added directly at sub-time-step in ts-case 132 114 ! 133 115 CALL upd_tide( kt ) ! update tide potential … … 135 117 DO jj = 2, jpjm1 ! add tide potential forcing 136 118 DO ji = fs_2, fs_jpim1 ! vector opt. 137 spgu(ji,jj) = spgu(ji,jj) + grav * ( pot_astro(ji+1,jj) - pot_astro(ji,jj) ) /e1u(ji,jj)138 spgv(ji,jj) = spgv(ji,jj) + grav * ( pot_astro(ji,jj+1) - pot_astro(ji,jj) ) /e2v(ji,jj)119 spgu(ji,jj) = spgu(ji,jj) + grav * ( pot_astro(ji+1,jj) - pot_astro(ji,jj) ) * r1_e1u(ji,jj) 120 spgv(ji,jj) = spgv(ji,jj) + grav * ( pot_astro(ji,jj+1) - pot_astro(ji,jj) ) * r1_e2v(ji,jj) 139 121 END DO 140 122 END DO … … 142 124 ! 143 125 IF( nn_ice_embd == 2 ) THEN !== embedded sea ice: Pressure gradient due to snow-ice mass ==! 144 CALL wrk_alloc( jpi, jpj,zpice )126 CALL wrk_alloc( jpi,jpj, zpice ) 145 127 ! 146 128 zintp = REAL( MOD( kt-1, nn_fsbc ) ) / REAL( nn_fsbc ) … … 149 131 DO jj = 2, jpjm1 150 132 DO ji = fs_2, fs_jpim1 ! vector opt. 151 spgu(ji,jj) = spgu(ji,jj) + ( zpice(ji+1,jj) - zpice(ji,jj) ) /e1u(ji,jj)152 spgv(ji,jj) = spgv(ji,jj) + ( zpice(ji,jj+1) - zpice(ji,jj) ) /e2v(ji,jj)133 spgu(ji,jj) = spgu(ji,jj) + ( zpice(ji+1,jj) - zpice(ji,jj) ) * r1_e1u(ji,jj) 134 spgv(ji,jj) = spgv(ji,jj) + ( zpice(ji,jj+1) - zpice(ji,jj) ) * r1_e2v(ji,jj) 153 135 END DO 154 136 END DO 155 137 ! 156 CALL wrk_dealloc( jpi, jpj,zpice )138 CALL wrk_dealloc( jpi,jpj, zpice ) 157 139 ENDIF 158 140 ! 159 DO jk = 1, jpkm1 141 DO jk = 1, jpkm1 !== Add all terms to the general trend 160 142 DO jj = 2, jpjm1 161 143 DO ji = fs_2, fs_jpim1 ! vector opt. … … 165 147 END DO 166 148 END DO 167 149 ! 168 150 !!gm add here a call to dyn_trd for ice pressure gradient, the surf pressure trends ???? 169 170 ENDIF 171 172 SELECT CASE ( nspg ) ! compute surf. pressure gradient trend and add it to the general trend 173 ! 174 CASE ( 0 ) ; CALL dyn_spg_exp( kt ) ! explicit 175 CASE ( 1 ) ; CALL dyn_spg_ts ( kt ) ! time-splitting 176 CASE ( 2 ) ; CALL dyn_spg_flt( kt, kindic ) ! filtered 177 ! 178 CASE ( -1 ) ! esopa: test all possibility with control print 179 CALL dyn_spg_exp( kt ) 180 CALL prt_ctl( tab3d_1=ua, clinfo1=' spg0 - Ua: ', mask1=umask, & 181 & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) 182 CALL dyn_spg_ts ( kt ) 183 CALL prt_ctl( tab3d_1=ua, clinfo1=' spg1 - Ua: ', mask1=umask, & 184 & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) 185 CALL dyn_spg_flt( kt, kindic ) 186 CALL prt_ctl( tab3d_1=ua, clinfo1=' spg2 - Ua: ', mask1=umask, & 187 & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) 151 ! 152 ENDIF 153 ! 154 SELECT CASE ( nspg ) !== surface pressure gradient computed and add to the general trend ==! 155 CASE ( np_EXP ) ; CALL dyn_spg_exp( kt ) ! explicit 156 CASE ( np_TS ) ; CALL dyn_spg_ts ( kt ) ! time-splitting 188 157 END SELECT 189 158 ! 190 IF( l_trddyn ) THEN ! save the surface pressure gradient trends for further diagnostics 191 SELECT CASE ( nspg ) 192 CASE ( 0, 1 ) 193 ztrdu(:,:,:) = ua(:,:,:) - ztrdu(:,:,:) 194 ztrdv(:,:,:) = va(:,:,:) - ztrdv(:,:,:) 195 CASE( 2 ) 196 z2dt = 2. * rdt 197 IF( neuler == 0 .AND. kt == nit000 ) z2dt = rdt 198 ztrdu(:,:,:) = ( ua(:,:,:) - ub(:,:,:) ) / z2dt - ztrdu(:,:,:) 199 ztrdv(:,:,:) = ( va(:,:,:) - vb(:,:,:) ) / z2dt - ztrdv(:,:,:) 200 END SELECT 159 IF( l_trddyn ) THEN ! save the surface pressure gradient trends for further diagnostics 160 ztrdu(:,:,:) = ua(:,:,:) - ztrdu(:,:,:) 161 ztrdv(:,:,:) = va(:,:,:) - ztrdv(:,:,:) 201 162 CALL trd_dyn( ztrdu, ztrdv, jpdyn_spg, kt ) 202 ! 203 CALL wrk_dealloc( jpi, jpj, jpk, ztrdu, ztrdv ) 204 ENDIF 205 ! ! print mean trends (used for debugging) 163 CALL wrk_dealloc( jpi,jpj,jpk, ztrdu, ztrdv ) 164 ENDIF 165 ! ! print mean trends (used for debugging) 206 166 IF(ln_ctl) CALL prt_ctl( tab3d_1=ua, clinfo1=' spg - Ua: ', mask1=umask, & 207 167 & tab3d_2=va, clinfo2= ' Va: ', mask2=vmask, clinfo3='dyn' ) … … 216 176 !! *** ROUTINE dyn_spg_init *** 217 177 !! 218 !! ** Purpose : Control the consistency between cppoptions for178 !! ** Purpose : Control the consistency between namelist options for 219 179 !! surface pressure gradient schemes 220 180 !!---------------------------------------------------------------------- 221 INTEGER :: ioptio 181 INTEGER :: ioptio, ios ! local integers 182 ! 183 NAMELIST/namdyn_spg/ ln_dynspg_exp , ln_dynspg_ts, & 184 & ln_bt_fw, ln_bt_av , ln_bt_auto , & 185 & nn_baro , rn_bt_cmax, nn_bt_flt 222 186 !!---------------------------------------------------------------------- 223 187 ! 224 188 IF( nn_timing == 1 ) CALL timing_start('dyn_spg_init') 225 189 ! 226 IF(lwp) THEN ! Control print 190 REWIND( numnam_ref ) ! Namelist namdyn_spg in reference namelist : Free surface 191 READ ( numnam_ref, namdyn_spg, IOSTAT = ios, ERR = 901) 192 901 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namdyn_spg in reference namelist', lwp ) 193 ! 194 REWIND( numnam_cfg ) ! Namelist namdyn_spg in configuration namelist : Free surface 195 READ ( numnam_cfg, namdyn_spg, IOSTAT = ios, ERR = 902 ) 196 902 IF( ios /= 0 ) CALL ctl_nam ( ios , 'namdyn_spg in configuration namelist', lwp ) 197 IF(lwm) WRITE ( numond, namdyn_spg ) 198 ! 199 IF(lwp) THEN ! Namelist print 227 200 WRITE(numout,*) 228 201 WRITE(numout,*) 'dyn_spg_init : choice of the surface pressure gradient scheme' 229 202 WRITE(numout,*) '~~~~~~~~~~~' 230 WRITE(numout,*) ' Explicit free surface lk_dynspg_exp = ', lk_dynspg_exp 231 WRITE(numout,*) ' Free surface with time splitting lk_dynspg_ts = ', lk_dynspg_ts 232 WRITE(numout,*) ' Filtered free surface cst volume lk_dynspg_flt = ', lk_dynspg_flt 233 ENDIF 234 235 IF( lk_dynspg_ts ) CALL dyn_spg_ts_init( nit000 ) 236 ! (do it now, to set nn_baro, used to allocate some arrays later on) 237 ! ! allocate dyn_spg arrays 238 IF( lk_dynspg_ts ) THEN 239 IF( dynspg_oce_alloc() /= 0 ) CALL ctl_stop('STOP', 'dyn_spg_init: failed to allocate dynspg_oce arrays') 240 IF( dyn_spg_ts_alloc() /= 0 ) CALL ctl_stop('STOP', 'dyn_spg_init: failed to allocate dynspg_ts arrays') 241 IF ((neuler/=0).AND.(ln_bt_fw)) CALL ts_rst( nit000, 'READ' ) 242 ENDIF 243 244 ! ! Control of surface pressure gradient scheme options 245 ioptio = 0 246 IF(lk_dynspg_exp) ioptio = ioptio + 1 247 IF(lk_dynspg_ts ) ioptio = ioptio + 1 248 IF(lk_dynspg_flt) ioptio = ioptio + 1 249 ! 250 IF( ( ioptio > 1 .AND. .NOT. lk_esopa ) .OR. ( ioptio == 0 .AND. .NOT. lk_c1d ) ) & 251 & CALL ctl_stop( ' Choose only one surface pressure gradient scheme with a key cpp' ) 252 IF( ( lk_dynspg_ts .OR. lk_dynspg_exp ) .AND. ln_isfcav ) & 253 & CALL ctl_stop( ' dynspg_ts and dynspg_exp not tested with ice shelf cavity ' ) 254 ! 255 IF( lk_esopa ) nspg = -1 256 IF( lk_dynspg_exp) nspg = 0 257 IF( lk_dynspg_ts ) nspg = 1 258 IF( lk_dynspg_flt) nspg = 2 259 ! 260 IF( lk_esopa ) nspg = -1 203 WRITE(numout,*) ' Explicit free surface ln_dynspg_exp = ', ln_dynspg_exp 204 WRITE(numout,*) ' Free surface with time splitting ln_dynspg_ts = ', ln_dynspg_ts 205 ENDIF 206 ! ! Control of surface pressure gradient scheme options 207 ; nspg = np_NO ; ioptio = 0 208 IF( ln_dynspg_exp ) THEN ; nspg = np_EXP ; ioptio = ioptio + 1 ; ENDIF 209 IF( ln_dynspg_ts ) THEN ; nspg = np_TS ; ioptio = ioptio + 1 ; ENDIF 210 ! 211 IF( ioptio > 1 ) CALL ctl_stop( 'Choose only one surface pressure gradient scheme' ) 212 IF( ioptio == 0 ) CALL ctl_warn( 'NO surface pressure gradient trend in momentum Eqs.' ) 213 IF( ln_dynspg_exp .AND. ln_isfcav ) & 214 & CALL ctl_stop( ' dynspg_exp not tested with ice shelf cavity ' ) 261 215 ! 262 216 IF(lwp) THEN 263 217 WRITE(numout,*) 264 IF( nspg == -1 ) WRITE(numout,*) ' ESOPA test All scheme used' 265 IF( nspg == 0 ) WRITE(numout,*) ' explicit free surface' 266 IF( nspg == 1 ) WRITE(numout,*) ' free surface with time splitting scheme' 267 IF( nspg == 2 ) WRITE(numout,*) ' filtered free surface' 268 ENDIF 269 270 #if defined key_dynspg_flt || defined key_esopa 271 CALL solver_init( nit000 ) ! Elliptic solver initialisation 272 #endif 273 274 ! ! Control of timestep choice 275 IF( lk_dynspg_ts .OR. lk_dynspg_exp ) THEN 276 IF( nn_cla == 1 ) CALL ctl_stop( 'Crossland advection not implemented for this free surface formulation' ) 277 ENDIF 278 279 ! ! Control of hydrostatic pressure choice 280 IF( lk_dynspg_ts .AND. ln_dynhpg_imp ) THEN 281 CALL ctl_stop( 'Semi-implicit hpg not compatible with time splitting' ) 218 IF( nspg == np_EXP ) WRITE(numout,*) ' explicit free surface' 219 IF( nspg == np_TS ) WRITE(numout,*) ' free surface with time splitting scheme' 220 IF( nspg == np_NO ) WRITE(numout,*) ' No surface surface pressure gradient trend in momentum Eqs.' 221 ENDIF 222 ! 223 IF( nspg == np_TS ) THEN ! split-explicit scheme initialisation 224 CALL dyn_spg_ts_init ! do it first: set nn_baro used to allocate some arrays later on 225 IF( dyn_spg_ts_alloc() /= 0 ) CALL ctl_stop('STOP', 'dyn_spg_init: failed to allocate dynspg_ts arrays' ) 226 IF( neuler/=0 .AND. ln_bt_fw ) CALL ts_rst( nit000, 'READ' ) 282 227 ENDIF 283 228 !
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