Changeset 10312
- Timestamp:
- 2018-11-15T10:46:57+01:00 (5 years ago)
- Location:
- NEMO/branches/2018/dev_r9947_SI3_advection
- Files:
-
- 7 edited
-
cfgs/SHARED/field_def_nemo-ice.xml (modified) (1 diff)
-
cfgs/SHARED/namelist_ice_ref (modified) (1 diff)
-
src/ICE/ice.F90 (modified) (1 diff)
-
src/ICE/icedyn.F90 (modified) (4 diffs)
-
src/ICE/icedyn_rdgrft.F90 (modified) (2 diffs)
-
src/ICE/icedyn_rhg_evp.F90 (modified) (15 diffs)
-
src/ICE/icewri.F90 (modified) (3 diffs)
Legend:
- Unmodified
- Added
- Removed
-
NEMO/branches/2018/dev_r9947_SI3_advection/cfgs/SHARED/field_def_nemo-ice.xml
r9943 r10312 29 29 <field id="icemask15" long_name="Ice mask (0 if ice conc. lower than 15%, 1 otherwise)" standard_name="sea_ice_mask15" unit="" /> 30 30 <field id="icepres" long_name="Fraction of time steps with sea ice" standard_name="sea_ice_time_fraction" unit="" /> 31 31 <field id="fasticepres" long_name="Fraction of time steps with landfast ice" standard_name="fast_ice_time_fraction" unit="" /> 32 32 33 <!-- general fields --> 33 34 <field id="icemass" long_name="Sea-ice mass per area" standard_name="sea_ice_amount" unit="kg/m2"/> -
NEMO/branches/2018/dev_r9947_SI3_advection/cfgs/SHARED/namelist_ice_ref
r9801 r10312 52 52 ln_dynRHGADV = .false. ! dyn.: no ridge/raft & no corrections (rheology + advection) 53 53 ln_dynADV = .false. ! dyn.: only advection w prescribed vel.(rn_uvice + advection) 54 rn_uice = 0.00001 ! prescribed ice u-velocity 55 rn_vice = 0. ! prescribed ice v-velocity 56 rn_ishlat = 2. ! free slip (0) ; partial slip (0-2) ; no slip (2) ; strong slip (>2) 57 ln_landfast = .false. ! landfast ice parameterization (T or F) 58 rn_gamma = 0.15 ! fraction of ocean depth that ice must reach to initiate landfast 59 ! recommended range: [0.1 ; 0.25] 60 rn_icebfr = 10. ! maximum bottom stress per unit area of contact [N/m2] 61 ! a very large value ensures ice velocity=0 even with a small contact area 62 ! recommended range: ?? (should be greater than atm-ice stress => >0.1 N/m2) 63 rn_lfrelax = 1.e-5 ! relaxation time scale to reach static friction [s-1] 54 rn_uice = 0.5 ! prescribed ice u-velocity 55 rn_vice = 0.5 ! prescribed ice v-velocity 56 rn_ishlat = 2. ! lbc : free slip (0) ; partial slip (0-2) ; no slip (2) ; strong slip (>2) 57 ln_landfast_L16 = .false. ! landfast: parameterization from Lemieux 2016 58 ln_landfast_home = .false. ! landfast: parameterization from "home made" 59 rn_depfra = 0.125 ! fraction of ocean depth that ice must reach to initiate landfast 60 ! recommended range: [0.1 ; 0.25] - L16=0.125 - home=0.15 61 rn_icebfr = 15. ! ln_landfast_L16: maximum bottom stress per unit volume [N/m3] 62 ! ln_landfast_home: maximum bottom stress per unit area of contact [N/m2] 63 ! recommended range: ?? L16=15 - home=10 64 rn_lfrelax = 1.e-5 ! relaxation time scale to reach static friction [s-1] 65 rn_tensile = 0.2 ! isotropic tensile strength 64 66 / 65 67 !------------------------------------------------------------------------------ -
NEMO/branches/2018/dev_r9947_SI3_advection/src/ICE/ice.F90
r9922 r10312 129 129 ! !!** ice-dynamics namelist (namdyn) ** 130 130 REAL(wp), PUBLIC :: rn_ishlat !: lateral boundary condition for sea-ice 131 LOGICAL , PUBLIC :: ln_landfast !: landfast ice parameterization (T or F) 132 REAL(wp), PUBLIC :: rn_gamma !: fraction of ocean depth that ice must reach to initiate landfast ice 133 REAL(wp), PUBLIC :: rn_icebfr !: maximum bottom stress per unit area of contact (landfast ice) 134 REAL(wp), PUBLIC :: rn_lfrelax !: relaxation time scale (s-1) to reach static friction (landfast ice) 135 ! 136 ! !!** ice-rheology namelist (namrhg) ** 131 LOGICAL , PUBLIC :: ln_landfast_L16 !: landfast ice parameterizationfrom lemieux2016 132 LOGICAL , PUBLIC :: ln_landfast_home !: landfast ice parameterizationfrom home made 133 REAL(wp), PUBLIC :: rn_depfra !: fraction of ocean depth that ice must reach to initiate landfast ice 134 REAL(wp), PUBLIC :: rn_icebfr !: maximum bottom stress per unit area of contact (lemieux2016) or per unit volume (home) 135 REAL(wp), PUBLIC :: rn_lfrelax !: relaxation time scale (s-1) to reach static friction 136 REAL(wp), PUBLIC :: rn_tensile !: isotropic tensile strength 137 ! 138 ! !!** ice-ridging/rafting namelist (namdyn_rdgrft) ** 139 REAL(wp), PUBLIC :: rn_crhg !: determines changes in ice strength (also used for landfast param) 140 ! 141 ! !!** ice-rheology namelist (namdyn_rhg) ** 137 142 LOGICAL , PUBLIC :: ln_aEVP !: using adaptive EVP (T or F) 138 143 REAL(wp), PUBLIC :: rn_creepl !: creep limit : has to be under 1.0e-9 -
NEMO/branches/2018/dev_r9947_SI3_advection/src/ICE/icedyn.F90
r10267 r10312 84 84 WRITE(numout,*)'~~~~~~~' 85 85 ENDIF 86 87 86 ! 88 IF( ln_landfast ) THEN !-- Landfast ice parameterization: define max bottom friction87 IF( ln_landfast_home ) THEN !-- Landfast ice parameterization 89 88 tau_icebfr(:,:) = 0._wp 90 89 DO jl = 1, jpl 91 WHERE( h_i(:,:,jl) > ht_n(:,:) * rn_ gamma ) tau_icebfr(:,:) = tau_icebfr(:,:) + a_i(:,:,jl) * rn_icebfr90 WHERE( h_i(:,:,jl) > ht_n(:,:) * rn_depfra ) tau_icebfr(:,:) = tau_icebfr(:,:) + a_i(:,:,jl) * rn_icebfr 92 91 END DO 93 IF( iom_use('tau_icebfr') ) CALL iom_put( 'tau_icebfr', tau_icebfr ) 94 ENDIF 95 92 ENDIF 93 ! 96 94 zhmax(:,:,:) = h_i_b(:,:,:) !-- Record max of the surrounding 9-pts ice thick. (for CALL Hbig) 97 95 DO jl = 1, jpl … … 244 242 !! 245 243 NAMELIST/namdyn/ ln_dynFULL, ln_dynRHGADV, ln_dynADV, rn_uice, rn_vice, & 246 & rn_ishlat ,&247 & ln_landfast , rn_gamma , rn_icebfr, rn_lfrelax244 & rn_ishlat , & 245 & ln_landfast_L16, ln_landfast_home, rn_depfra, rn_icebfr, rn_lfrelax, rn_tensile 248 246 !!------------------------------------------------------------------- 249 247 ! … … 261 259 WRITE(numout,*) '~~~~~~~~~~~~' 262 260 WRITE(numout,*) ' Namelist namdyn:' 263 WRITE(numout,*) ' Full ice dynamics (rhg + adv + ridge/raft + corr) ln_dynFULL = ', ln_dynFULL 264 WRITE(numout,*) ' No ridge/raft & No cor (rhg + adv) ln_dynRHGADV = ', ln_dynRHGADV 265 WRITE(numout,*) ' Advection only (rn_uvice + adv) ln_dynADV = ', ln_dynADV 266 WRITE(numout,*) ' with prescribed velocity given by (u,v)_ice = (rn_uice,rn_vice) = (', rn_uice,',', rn_vice,')' 267 WRITE(numout,*) ' lateral boundary condition for sea ice dynamics rn_ishlat = ', rn_ishlat 268 WRITE(numout,*) ' Landfast: param (T or F) ln_landfast = ', ln_landfast 269 WRITE(numout,*) ' fraction of ocean depth that ice must reach rn_gamma = ', rn_gamma 270 WRITE(numout,*) ' maximum bottom stress per unit area of contact rn_icebfr = ', rn_icebfr 271 WRITE(numout,*) ' relax time scale (s-1) to reach static friction rn_lfrelax = ', rn_lfrelax 261 WRITE(numout,*) ' Full ice dynamics (rhg + adv + ridge/raft + corr) ln_dynFULL = ', ln_dynFULL 262 WRITE(numout,*) ' No ridge/raft & No cor (rhg + adv) ln_dynRHGADV = ', ln_dynRHGADV 263 WRITE(numout,*) ' Advection only (rn_uvice + adv) ln_dynADV = ', ln_dynADV 264 WRITE(numout,*) ' with prescribed velocity given by (u,v)_ice = (rn_uice,rn_vice) = (', rn_uice,',', rn_vice,')' 265 WRITE(numout,*) ' lateral boundary condition for sea ice dynamics rn_ishlat = ', rn_ishlat 266 WRITE(numout,*) ' Landfast: param from Lemieux 2016 ln_landfast_L16 = ', ln_landfast_L16 267 WRITE(numout,*) ' Landfast: param from home made ln_landfast_home= ', ln_landfast_home 268 WRITE(numout,*) ' fraction of ocean depth that ice must reach rn_depfra = ', rn_depfra 269 WRITE(numout,*) ' maximum bottom stress per unit area of contact rn_icebfr = ', rn_icebfr 270 WRITE(numout,*) ' relax time scale (s-1) to reach static friction rn_lfrelax = ', rn_lfrelax 271 WRITE(numout,*) ' isotropic tensile strength rn_tensile = ', rn_tensile 272 272 WRITE(numout,*) 273 273 ENDIF … … 289 289 ELSEIF ( 2. < rn_ishlat ) THEN ; IF(lwp) WRITE(numout,*) ' ===>>> ice lateral strong-slip' 290 290 ENDIF 291 ! !--- NO Landfast ice : set to zero once for all 292 IF( .NOT.ln_landfast ) tau_icebfr(:,:) = 0._wp 291 ! !--- Landfast ice 292 IF( .NOT.ln_landfast_L16 .AND. .NOT.ln_landfast_home ) tau_icebfr(:,:) = 0._wp 293 ! 294 IF ( ln_landfast_L16 .AND. ln_landfast_home ) THEN 295 CALL ctl_stop( 'ice_dyn_init: choose one and only one landfast parameterization (ln_landfast_L16 or ln_landfast_home)' ) 296 ENDIF 293 297 ! 294 298 CALL ice_dyn_rdgrft_init ! set ice ridging/rafting parameters -
NEMO/branches/2018/dev_r9947_SI3_advection/src/ICE/icedyn_rdgrft.F90
r9935 r10312 39 39 40 40 ! Variables shared among ridging subroutines 41 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: closing_net ! net rate at which area is removed (1/s)42 ! ! (ridging ice area - area of new ridges) / dt43 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: opning! rate of opening due to divergence/shear44 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: closing_gross! rate at which area removed, not counting area of new ridges45 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: apartf! participation function; fraction of ridging/closing associated w/ category n46 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hrmin! minimum ridge thickness47 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hrmax! maximum ridge thickness48 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hraft! thickness of rafted ice49 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hi_hrdg! thickness of ridging ice / mean ridge thickness50 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: aridge! participating ice ridging51 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: araft! participating ice rafting41 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: closing_net ! net rate at which area is removed (1/s) 42 ! ! (ridging ice area - area of new ridges) / dt 43 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: opning ! rate of opening due to divergence/shear 44 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:) :: closing_gross ! rate at which area removed, not counting area of new ridges 45 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: apartf ! participation function; fraction of ridging/closing associated w/ category n 46 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hrmin ! minimum ridge thickness 47 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hrmax ! maximum ridge thickness 48 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hraft ! thickness of rafted ice 49 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: hi_hrdg ! thickness of ridging ice / mean ridge thickness 50 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: aridge ! participating ice ridging 51 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:) :: araft ! participating ice rafting 52 52 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: ze_i_2d 53 53 REAL(wp), ALLOCATABLE, SAVE, DIMENSION(:,:,:) :: ze_s_2d … … 59 59 LOGICAL :: ln_str_H79 ! ice strength parameterization (Hibler79) 60 60 REAL(wp) :: rn_pstar ! determines ice strength, Hibler JPO79 61 REAL(wp) :: rn_crhg ! determines changes in ice strength62 61 REAL(wp) :: rn_csrdg ! fraction of shearing energy contributing to ridging 63 62 LOGICAL :: ln_partf_lin ! participation function linear (Thorndike et al. (1975)) -
NEMO/branches/2018/dev_r9947_SI3_advection/src/ICE/icedyn_rhg_evp.F90
r9935 r10312 118 118 REAL(wp) :: ecc2, z1_ecc2 ! square of yield ellipse eccenticity 119 119 REAL(wp) :: zalph1, z1_alph1, zalph2, z1_alph2 ! alpha coef from Bouillon 2009 or Kimmritz 2017 120 REAL(wp) :: zm1, zm2, zm3, zmassU, zmassV ! ice/snow mass120 REAL(wp) :: zm1, zm2, zm3, zmassU, zmassV, zvU, zvV ! ice/snow mass and volume 121 121 REAL(wp) :: zdelta, zp_delf, zds2, zdt, zdt2, zdiv, zdiv2 ! temporary scalars 122 122 REAL(wp) :: zTauO, zTauB, zTauE, zvel ! temporary scalars 123 REAL(wp) :: zkt ! isotropic tensile strength for landfast ice 124 REAL(wp) :: zvCr ! critical ice volume above which ice is landfast 123 125 ! 124 126 REAL(wp) :: zresm ! Maximal error on ice velocity … … 136 138 REAL(wp), DIMENSION(jpi,jpj) :: zmf ! coriolis parameter at T points 137 139 REAL(wp), DIMENSION(jpi,jpj) :: zTauU_ia , ztauV_ia ! ice-atm. stress at U-V points 140 REAL(wp), DIMENSION(jpi,jpj) :: zTauU_ib , ztauV_ib ! ice-bottom stress at U-V points (landfast param) 138 141 REAL(wp), DIMENSION(jpi,jpj) :: zspgU , zspgV ! surface pressure gradient at U/V points 139 142 REAL(wp), DIMENSION(jpi,jpj) :: v_oceU, u_oceV, v_iceU, u_iceV ! ocean/ice u/v component on V/U points … … 255 258 END DO 256 259 END DO 257 260 261 ! landfast param from Lemieux(2016): add isotropic tensile strength (following Konig Beatty and Holland, 2010) 262 IF( ln_landfast_L16 .OR. ln_landfast_home ) THEN ; zkt = rn_tensile 263 ELSE ; zkt = 0._wp 264 ENDIF 258 265 ! 259 266 !------------------------------------------------------------------------------! … … 273 280 zpice(:,:) = ssh_m(:,:) + ( zintn * snwice_mass(:,:) + zintb * snwice_mass_b(:,:) ) * r1_rau0 274 281 ! 275 ELSE 282 ELSE !== non-embedded sea ice: use ocean surface for slope calculation ==! 276 283 zpice(:,:) = ssh_m(:,:) 277 284 ENDIF … … 328 335 CALL lbc_lnk_multi( zmf, 'T', 1., zdt_m, 'T', 1. ) 329 336 ! 337 ! !== Landfast ice parameterization ==! 338 ! 339 IF( ln_landfast_L16 ) THEN !-- Lemieux 2016 340 DO jj = 2, jpjm1 341 DO ji = fs_2, fs_jpim1 342 ! ice thickness at U-V points 343 zvU = 0.5_wp * ( vt_i(ji,jj) * e1e2t(ji,jj) + vt_i(ji+1,jj) * e1e2t(ji+1,jj) ) * r1_e1e2u(ji,jj) * umask(ji,jj,1) 344 zvV = 0.5_wp * ( vt_i(ji,jj) * e1e2t(ji,jj) + vt_i(ji,jj+1) * e1e2t(ji,jj+1) ) * r1_e1e2v(ji,jj) * vmask(ji,jj,1) 345 ! ice-bottom stress at U points 346 zvCr = zaU(ji,jj) * rn_depfra * hu_n(ji,jj) 347 zTauU_ib(ji,jj) = rn_icebfr * MAX( 0._wp, zvU - zvCr ) * EXP( -rn_crhg * ( 1._wp - zaU(ji,jj) ) ) 348 ! ice-bottom stress at V points 349 zvCr = zaV(ji,jj) * rn_depfra * hv_n(ji,jj) 350 zTauV_ib(ji,jj) = rn_icebfr * MAX( 0._wp, zvV - zvCr ) * EXP( -rn_crhg * ( 1._wp - zaV(ji,jj) ) ) 351 ! ice_bottom stress at T points 352 zvCr = at_i(ji,jj) * rn_depfra * ht_n(ji,jj) 353 tau_icebfr(ji,jj) = rn_icebfr * MAX( 0._wp, vt_i(ji,jj) - zvCr ) * EXP( -rn_crhg * ( 1._wp - at_i(ji,jj) ) ) 354 END DO 355 END DO 356 CALL lbc_lnk( tau_icebfr(:,:), 'T', 1. ) 357 ! 358 ELSEIF( ln_landfast_home ) THEN !-- Home made 359 DO jj = 2, jpjm1 360 DO ji = fs_2, fs_jpim1 361 zTauU_ib(ji,jj) = tau_icebfr(ji,jj) 362 zTauV_ib(ji,jj) = tau_icebfr(ji,jj) 363 END DO 364 END DO 365 ! 366 ELSE !-- no landfast 367 DO jj = 2, jpjm1 368 DO ji = fs_2, fs_jpim1 369 zTauU_ib(ji,jj) = 0._wp 370 zTauV_ib(ji,jj) = 0._wp 371 END DO 372 END DO 373 ENDIF 374 IF( iom_use('tau_icebfr') ) CALL iom_put( 'tau_icebfr', tau_icebfr(:,:) ) 375 330 376 !------------------------------------------------------------------------------! 331 377 ! 3) Solution of the momentum equation, iterative procedure … … 391 437 ENDIF 392 438 393 ! stress at T points 394 zs1(ji,jj) = ( zs1(ji,jj) * zalph1 + zp_delt(ji,jj) * ( zdiv - zdelta) ) * z1_alph1395 zs2(ji,jj) = ( zs2(ji,jj) * zalph2 + zp_delt(ji,jj) * ( zdt * z1_ecc2 ) ) * z1_alph2439 ! stress at T points (zkt/=0 if landfast) 440 zs1(ji,jj) = ( zs1(ji,jj) * zalph1 + zp_delt(ji,jj) * ( zdiv * (1._wp + zkt) - zdelta * (1._wp - zkt) ) ) * z1_alph1 441 zs2(ji,jj) = ( zs2(ji,jj) * zalph2 + zp_delt(ji,jj) * ( zdt * z1_ecc2 * (1._wp + zkt) ) ) * z1_alph2 396 442 397 443 END DO … … 412 458 zp_delf = 0.25_wp * ( zp_delt(ji,jj) + zp_delt(ji+1,jj) + zp_delt(ji,jj+1) + zp_delt(ji+1,jj+1) ) 413 459 414 ! stress at F points 415 zs12(ji,jj)= ( zs12(ji,jj) * zalph2 + zp_delf * ( zds(ji,jj) * z1_ecc2 ) * 0.5_wp ) * z1_alph2460 ! stress at F points (zkt/=0 if landfast) 461 zs12(ji,jj)= ( zs12(ji,jj) * zalph2 + zp_delf * ( zds(ji,jj) * z1_ecc2 * (1._wp + zkt) ) * 0.5_wp ) * z1_alph2 416 462 417 463 END DO … … 461 507 ! 462 508 ! !--- tau_bottom/v_ice 463 zvel = MAX( zepsi, SQRT( v_ice(ji,jj) * v_ice(ji,jj) + u_iceV(ji,jj) * u_iceV(ji,jj)) )464 zTauB = - tau_icebfr(ji,jj) / zvel509 zvel = 5.e-05_wp + SQRT( v_ice(ji,jj) * v_ice(ji,jj) + u_iceV(ji,jj) * u_iceV(ji,jj) ) 510 zTauB = - zTauV_ib(ji,jj) / zvel 465 511 ! 466 512 ! !--- Coriolis at V-points (energy conserving formulation) … … 473 519 ! 474 520 ! !--- landfast switch => 0 = static friction ; 1 = sliding friction 475 rswitch = 1._wp - MIN( 1._wp, ABS( SIGN( 1._wp, ztauE - tau_icebfr(ji,jj) ) - SIGN( 1._wp, zTauE ) ) )521 rswitch = 1._wp - MIN( 1._wp, ABS( SIGN( 1._wp, ztauE - zTauV_ib(ji,jj) ) - SIGN( 1._wp, zTauE ) ) ) 476 522 ! 477 523 IF( ln_aEVP ) THEN !--- ice velocity using aEVP (Kimmritz et al 2016 & 2017) … … 509 555 ! 510 556 ! !--- tau_bottom/u_ice 511 zvel = MAX( zepsi, SQRT( v_iceU(ji,jj) * v_iceU(ji,jj) + u_ice(ji,jj) * u_ice(ji,jj)) )512 zTauB = - tau_icebfr(ji,jj) / zvel557 zvel = 5.e-05_wp + SQRT( v_iceU(ji,jj) * v_iceU(ji,jj) + u_ice(ji,jj) * u_ice(ji,jj) ) 558 zTauB = - zTauU_ib(ji,jj) / zvel 513 559 ! 514 560 ! !--- Coriolis at U-points (energy conserving formulation) … … 521 567 ! 522 568 ! !--- landfast switch => 0 = static friction ; 1 = sliding friction 523 rswitch = 1._wp - MIN( 1._wp, ABS( SIGN( 1._wp, ztauE - tau_icebfr(ji,jj) ) - SIGN( 1._wp, zTauE ) ) )569 rswitch = 1._wp - MIN( 1._wp, ABS( SIGN( 1._wp, ztauE - zTauU_ib(ji,jj) ) - SIGN( 1._wp, zTauE ) ) ) 524 570 ! 525 571 IF( ln_aEVP ) THEN !--- ice velocity using aEVP (Kimmritz et al 2016 & 2017) … … 559 605 ! 560 606 ! !--- tau_bottom/u_ice 561 zvel = MAX( zepsi, SQRT( v_iceU(ji,jj) * v_iceU(ji,jj) + u_ice(ji,jj) * u_ice(ji,jj)) )562 zTauB = - tau_icebfr(ji,jj) / zvel607 zvel = 5.e-05_wp + SQRT( v_iceU(ji,jj) * v_iceU(ji,jj) + u_ice(ji,jj) * u_ice(ji,jj) ) 608 zTauB = - zTauU_ib(ji,jj) / zvel 563 609 ! 564 610 ! !--- Coriolis at U-points (energy conserving formulation) … … 571 617 ! 572 618 ! !--- landfast switch => 0 = static friction ; 1 = sliding friction 573 rswitch = 1._wp - MIN( 1._wp, ABS( SIGN( 1._wp, ztauE - tau_icebfr(ji,jj) ) - SIGN( 1._wp, zTauE ) ) )619 rswitch = 1._wp - MIN( 1._wp, ABS( SIGN( 1._wp, ztauE - zTauU_ib(ji,jj) ) - SIGN( 1._wp, zTauE ) ) ) 574 620 ! 575 621 IF( ln_aEVP ) THEN !--- ice velocity using aEVP (Kimmritz et al 2016 & 2017) … … 607 653 ! 608 654 ! !--- tau_bottom/v_ice 609 zvel = MAX( zepsi, SQRT( v_ice(ji,jj) * v_ice(ji,jj) + u_iceV(ji,jj) * u_iceV(ji,jj)) )610 z tauB = - tau_icebfr(ji,jj) / zvel655 zvel = 5.e-05_wp + SQRT( v_ice(ji,jj) * v_ice(ji,jj) + u_iceV(ji,jj) * u_iceV(ji,jj) ) 656 zTauB = - zTauV_ib(ji,jj) / zvel 611 657 ! 612 658 ! !--- Coriolis at v-points (energy conserving formulation) … … 619 665 ! 620 666 ! !--- landfast switch => 0 = static friction ; 1 = sliding friction 621 rswitch = 1._wp - MIN( 1._wp, ABS( SIGN( 1._wp, zTauE - tau_icebfr(ji,jj) ) - SIGN( 1._wp, zTauE ) ) )667 rswitch = 1._wp - MIN( 1._wp, ABS( SIGN( 1._wp, zTauE - zTauV_ib(ji,jj) ) - SIGN( 1._wp, zTauE ) ) ) 622 668 ! 623 669 IF( ln_aEVP ) THEN !--- ice velocity using aEVP (Kimmritz et al 2016 & 2017) -
NEMO/branches/2018/dev_r9947_SI3_advection/src/ICE/icewri.F90
r9935 r10312 50 50 INTEGER :: ji, jj, jk, jl ! dummy loop indices 51 51 REAL(wp) :: z2da, z2db, zrho1, zrho2 52 REAL(wp), DIMENSION(jpi,jpj) :: z2d ! 2D workspace52 REAL(wp), DIMENSION(jpi,jpj) :: z2d, zfast ! 2D workspace 53 53 REAL(wp), DIMENSION(jpi,jpj) :: zmsk00, zmsk05, zmsk15, zmsksn ! O%, 5% and 15% concentration mask and snow mask 54 54 REAL(wp), DIMENSION(jpi,jpj,jpl) :: zmsk00l, zmsksnl ! cat masks … … 132 132 IF( iom_use('vtau_ai' ) ) CALL iom_put( "vtau_ai", vtau_ice * zmsk00 ) ! Wind stress term in force balance (y) 133 133 134 IF( iom_use('icevel') ) THEN 134 IF( iom_use('icevel') .OR. iom_use('fasticepres') ) THEN 135 ! module of ice velocity 135 136 DO jj = 2 , jpjm1 136 137 DO ji = 2 , jpim1 … … 141 142 END DO 142 143 CALL lbc_lnk( z2d, 'T', 1. ) 143 IF( iom_use('icevel') ) CALL iom_put( "icevel" , z2d ) ! ice velocity module 144 IF( iom_use('icevel') ) CALL iom_put( "icevel" , z2d ) 145 146 ! record presence of fast ice 147 WHERE( z2d(:,:) < 5.e-04_wp .AND. zmsk00(:,:) == 1._wp ) ; zfast(:,:) = 1._wp 148 ELSEWHERE ; zfast(:,:) = 0._wp 149 END WHERE 150 IF( iom_use('fasticepres') ) CALL iom_put( "fasticepres" , zfast ) 144 151 ENDIF 145 152
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