- Timestamp:
- 2012-10-26T12:13:21+02:00 (11 years ago)
- File:
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- 1 edited
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branches/2012/dev_r3385_NOCS04_HAMF/NEMOGCM/NEMO/LIM_SRC_3/limsbc.F90
r3488 r3517 9 9 !! 3.3 ! 2010-05 (G. Madec) decrease ocean & ice reference salinities in the Baltic sea 10 10 !! ! + simplification of the ice-ocean stress calculation 11 !! 4.0 ! 2011-02 (G. Madec) dynamical allocation 11 !! 3.4 ! 2011-02 (G. Madec) dynamical allocation 12 !! 3.5 ! 2012-10 (A. Coward, G. Madec) salt fluxes ; ice+snow mass 12 13 !!---------------------------------------------------------------------- 13 14 #if defined key_lim3 … … 44 45 PUBLIC lim_sbc_tau ! called by sbc_ice_lim 45 46 46 REAL(wp) :: r1_rdtice ! = 1. / rdt_ice47 47 REAL(wp) :: epsi16 = 1.e-16_wp ! constant values 48 48 REAL(wp) :: rzero = 0._wp … … 88 88 !! - qns : sea heat flux: non solar 89 89 !! - emp : freshwater budget: volume flux 90 !! - sfx : freshwater budget: concentration/dillution90 !! - sfx : salt flux 91 91 !! - fr_i : ice fraction 92 92 !! - tn_ice : sea-ice surface temperature … … 102 102 INTEGER :: ifvt, i1mfr, idfr ! some switches 103 103 INTEGER :: iflt, ial, iadv, ifral, ifrdv 104 REAL(wp) :: zinda, z fons, zpme! local scalars105 REAL(wp), POINTER, DIMENSION(:,:) :: zfcm1 , zfcm2! solar/non solar heat fluxes106 REAL(wp), POINTER, DIMENSION(:,:,:) :: zalb, zalbp ! 2D/3D workspace104 REAL(wp) :: zinda, zemp, zemp_snow, zfmm ! local scalars 105 REAL(wp), POINTER, DIMENSION(:,:) :: zfcm1 , zfcm2 ! solar/non solar heat fluxes 106 REAL(wp), POINTER, DIMENSION(:,:,:) :: zalb, zalbp ! 2D/3D workspace 107 107 !!--------------------------------------------------------------------- 108 108 … … 153 153 ! & + iflt * ffltbif(ji,jj) !!! only if one category is used 154 154 & + ifral * ( ial * qcmif(ji,jj) + (1 - ial) * qldif(ji,jj) ) * r1_rdtice & 155 & + ifrdv * ( qfvbq(ji,jj) + qdtcn(ji,jj) )* r1_rdtice &156 & + fhmec(ji,jj) & ! new contribution due to snow melt in ridging!!155 & + ifrdv * ( qfvbq(ji,jj) + qdtcn(ji,jj) ) * r1_rdtice & 156 & + fhmec(ji,jj) & ! new contribution due to snow melt when ridging!! 157 157 & + fheat_rpo(ji,jj) & ! contribution from ridge formation 158 158 & + fheat_res(ji,jj) 159 ! fscmbq Part of the solar radiation transmitted through the ice and going to the ocean 160 ! computed in limthd_zdf.F90 159 ! fscmbq Part of the solar radiation transmitted through the ice and going to the ocean computed in limthd_zdf.F90 161 160 ! ffltbif Total heat content of the ice (brine pockets+ice) / delta_t 162 161 ! qcmif Energy needed to bring the ocean surface layer until its freezing (ok) … … 167 166 ! qdtcn Energy from the turbulent oceanic heat flux heat flux coming in the lead 168 167 169 IF ( num_sal == 2 ) zfcm2(ji,jj) = zfcm2(ji,jj) + & 170 fhbri(ji,jj) ! new contribution due to brine drainage 171 172 ! bottom radiative component is sent to the computation of the 173 ! oceanic heat flux 168 IF( num_sal == 2 ) zfcm2(ji,jj) = zfcm2(ji,jj) + fhbri(ji,jj) ! add contribution due to brine drainage 169 170 ! bottom radiative component is sent to the computation of the oceanic heat flux 174 171 fsbbq(ji,jj) = ( 1.0 - ( ifvt + iflt ) ) * fscmbq(ji,jj) 175 172 … … 179 176 ! ! fdtcn : turbulent oceanic heat flux 180 177 181 178 !!gm this IF prevents the vertorisation of the whole loop 182 179 IF ( ( ji == jiindx ) .AND. ( jj == jjindx) ) THEN 183 180 WRITE(numout,*) ' lim_sbc : heat fluxes ' … … 208 205 WRITE(numout,*) ' fheat_res : ', fheat_res(jiindx,jjindx) 209 206 ENDIF 210 207 !!gm end 211 208 END DO 212 209 END DO … … 229 226 230 227 ! computing freshwater exchanges at the ice/ocean interface 231 zpme = - emp(ji,jj) * ( 1.0 - at_i(ji,jj) ) & ! evaporation over oceanic fraction 232 & + tprecip(ji,jj) * at_i(ji,jj) & ! all precipitation reach the ocean 233 & - sprecip(ji,jj) * ( 1. - (pfrld(ji,jj)**betas) ) & ! except solid precip intercepted by sea-ice 234 & - rdm_snw(ji,jj) * r1_rdtice & ! freshwaterflux due to snow melting 235 & + fmmec(ji,jj) ! snow falling when ridging 236 237 238 ! computing salt exchanges at the ice/ocean interface 239 ! sice should be the same as computed with the ice model 240 zfons = ( soce_0(ji,jj) - sice_0(ji,jj) ) * rdm_ice(ji,jj) * r1_rdtice 241 ! SOCE 242 zfons = ( sss_m (ji,jj) - sice_0(ji,jj) ) * rdm_ice(ji,jj) * r1_rdtice 243 244 !CT useless ! salt flux for constant salinity 245 !CT useless fsalt(ji,jj) = zfons / ( sss_m(ji,jj) + epsi16 ) + fsalt_res(ji,jj) 246 ! salt flux for variable salinity 247 zinda = 1.0 - MAX( rzero , SIGN( rone , - ( 1.0 - pfrld(ji,jj) ) ) ) 248 ! correcting brine and salt fluxes 249 fsbri(ji,jj) = zinda*fsbri(ji,jj) 250 ! converting the salt fluxes from ice to a freshwater flux from ocean 251 fsalt_res(ji,jj) = fsalt_res(ji,jj) / ( sss_m(ji,jj) + epsi16 ) 252 fseqv(ji,jj) = fseqv(ji,jj) / ( sss_m(ji,jj) + epsi16 ) 253 fsbri(ji,jj) = fsbri(ji,jj) / ( sss_m(ji,jj) + epsi16 ) 254 fsalt_rpo(ji,jj) = fsalt_rpo(ji,jj) / ( sss_m(ji,jj) + epsi16 ) 255 256 ! freshwater mass exchange (positive to the ice, negative for the ocean ?) 257 ! actually it's a salt flux (so it's minus freshwater flux) 258 ! if sea ice grows, zfons is positive, fsalt also 259 ! POSITIVE SALT FLUX FROM THE ICE TO THE OCEAN 260 ! POSITIVE FRESHWATER FLUX FROM THE OCEAN TO THE ICE [kg.m-2.s-1] 261 262 emp(ji,jj) = - zpme 228 zemp = emp(ji,jj) * ( 1.0 - at_i(ji,jj) ) & ! evaporation over oceanic fraction 229 & - tprecip(ji,jj) * at_i(ji,jj) & ! all precipitation reach the ocean 230 & + sprecip(ji,jj) * ( 1. - (pfrld(ji,jj)**betas) ) & ! except solid precip intercepted by sea-ice 231 & - fmmec(ji,jj) ! snow falling when ridging 232 233 ! mass flux at the ocean/ice interface (sea ice fraction) 234 zemp_snw = rdm_snw(ji,jj) * r1_rdtice ! snow melting = pure water that enters the ocean 235 zfmm = rdm_ice(ji,jj) * r1_rdtice ! Freezing minus mesting 236 237 emp(ji,jj) = zemp + zemp_snw + zfmm ! mass flux + F/M mass flux (always ice/ocean mass exchange) 238 239 ! correcting brine salt fluxes (zinda = 1 if pfrld=1 , =0 otherwise) 240 zinda = 1.0 - MAX( rzero , SIGN( rone , - ( 1.0 - pfrld(ji,jj) ) ) ) 241 fsbri(ji,jj) = zinda * fsbri(ji,jj) 263 242 END DO 264 243 END DO 265 244 245 !------------------------------------------! 246 ! salt flux at the ocean surface ! 247 !------------------------------------------! 248 266 249 IF( num_sal == 2 ) THEN ! variable ice salinity: brine drainage included in the salt flux 267 sfx (:,:) = fs bri(:,:) + fseqv(:,:) + fsalt_res(:,:) + fsalt_rpo(:,:) + emp(:,:)250 sfx (:,:) = fseqv(:,:) + fsalt_res(:,:) + fsalt_rpo(:,:) + fsbri(:,:) 268 251 ELSE ! constant ice salinity: 269 sfx (:,:) = fseqv(:,:) + fsalt_res(:,:) + fsalt_rpo(:,:) + emp(:,:)252 sfx (:,:) = fseqv(:,:) + fsalt_res(:,:) + fsalt_rpo(:,:) 270 253 ENDIF 271 254 !-----------------------------------------------! … … 277 260 snwice_mass (:,:) = tms(:,:) * ( rhosn * vt_s(:,:) + rhoic * vt_i(:,:) ) 278 261 ! ! time evolution of snow+ice mass 279 snwice_fmass (:,:) = ( snwice_mass(:,:) - snwice_mass_b(:,:) ) / rdt_ice262 snwice_fmass (:,:) = ( snwice_mass(:,:) - snwice_mass_b(:,:) ) * r1_rdtice 280 263 ENDIF 281 264 … … 403 386 ! ! allocate lim_sbc array 404 387 IF( lim_sbc_alloc() /= 0 ) CALL ctl_stop( 'STOP', 'lim_sbc_init : unable to allocate standard arrays' ) 405 !406 r1_rdtice = 1. / rdt_ice407 388 ! 408 389 soce_0(:,:) = soce ! constant SSS and ice salinity used in levitating sea-ice case
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