- Timestamp:
- 2019-12-14T14:57:23+01:00 (4 years ago)
- File:
-
- 1 edited
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NEMO/branches/2019/dev_r11943_MERGE_2019/src/ICE/icedyn_adv_pra.F90
r11812 r12252 54 54 CONTAINS 55 55 56 SUBROUTINE ice_dyn_adv_pra( kt, pu_ice, pv_ice, &56 SUBROUTINE ice_dyn_adv_pra( kt, pu_ice, pv_ice, ph_i, ph_s, ph_ip, & 57 57 & pato_i, pv_i, pv_s, psv_i, poa_i, pa_i, pa_ip, pv_ip, pe_s, pe_i ) 58 58 !!---------------------------------------------------------------------- … … 70 70 REAL(wp), DIMENSION(:,:) , INTENT(in ) :: pu_ice ! ice i-velocity 71 71 REAL(wp), DIMENSION(:,:) , INTENT(in ) :: pv_ice ! ice j-velocity 72 REAL(wp), DIMENSION(:,:,:) , INTENT(in ) :: ph_i ! ice thickness 73 REAL(wp), DIMENSION(:,:,:) , INTENT(in ) :: ph_s ! snw thickness 74 REAL(wp), DIMENSION(:,:,:) , INTENT(in ) :: ph_ip ! ice pond thickness 72 75 REAL(wp), DIMENSION(:,:) , INTENT(inout) :: pato_i ! open water area 73 76 REAL(wp), DIMENSION(:,:,:) , INTENT(inout) :: pv_i ! ice volume … … 87 90 REAL(wp), DIMENSION(jpi,jpj) :: zati1, zati2 88 91 REAL(wp), DIMENSION(jpi,jpj) :: zudy, zvdx 92 REAL(wp), DIMENSION(jpi,jpj,jpl) :: zhi_max, zhs_max, zhip_max 89 93 REAL(wp), DIMENSION(jpi,jpj,jpl) :: zarea 90 94 REAL(wp), DIMENSION(jpi,jpj,jpl) :: z0ice, z0snw, z0ai, z0smi, z0oi … … 95 99 ! 96 100 IF( kt == nit000 .AND. lwp ) WRITE(numout,*) '-- ice_dyn_adv_pra: Prather advection scheme' 101 ! 102 ! --- Record max of the surrounding 9-pts ice thick. (for call Hbig) --- ! 103 DO jl = 1, jpl 104 DO jj = 2, jpjm1 105 DO ji = fs_2, fs_jpim1 106 zhip_max(ji,jj,jl) = MAX( epsi20, ph_ip(ji,jj,jl), ph_ip(ji+1,jj ,jl), ph_ip(ji ,jj+1,jl), & 107 & ph_ip(ji-1,jj ,jl), ph_ip(ji ,jj-1,jl), & 108 & ph_ip(ji+1,jj+1,jl), ph_ip(ji-1,jj-1,jl), & 109 & ph_ip(ji+1,jj-1,jl), ph_ip(ji-1,jj+1,jl) ) 110 zhi_max (ji,jj,jl) = MAX( epsi20, ph_i (ji,jj,jl), ph_i (ji+1,jj ,jl), ph_i (ji ,jj+1,jl), & 111 & ph_i (ji-1,jj ,jl), ph_i (ji ,jj-1,jl), & 112 & ph_i (ji+1,jj+1,jl), ph_i (ji-1,jj-1,jl), & 113 & ph_i (ji+1,jj-1,jl), ph_i (ji-1,jj+1,jl) ) 114 zhs_max (ji,jj,jl) = MAX( epsi20, ph_s (ji,jj,jl), ph_s (ji+1,jj ,jl), ph_s (ji ,jj+1,jl), & 115 & ph_s (ji-1,jj ,jl), ph_s (ji ,jj-1,jl), & 116 & ph_s (ji+1,jj+1,jl), ph_s (ji-1,jj-1,jl), & 117 & ph_s (ji+1,jj-1,jl), ph_s (ji-1,jj+1,jl) ) 118 END DO 119 END DO 120 END DO 121 CALL lbc_lnk_multi( 'icedyn_adv_pra', zhi_max, 'T', 1., zhs_max, 'T', 1., zhip_max, 'T', 1. ) 97 122 ! 98 123 ! --- If ice drift is too fast, use subtime steps for advection (CFL test for stability) --- ! … … 239 264 ! (because advected fields are not perfectly bounded and tiny negative values can occur, e.g. -1.e-20) 240 265 CALL ice_var_zapneg( zdt, pato_i, pv_i, pv_s, psv_i, poa_i, pa_i, pa_ip, pv_ip, pe_s, pe_i ) 266 ! 267 ! --- Make sure ice thickness is not too big --- ! 268 ! (because ice thickness can be too large where ice concentration is very small) 269 CALL Hbig( zdt, zhi_max, zhs_max, zhip_max, pv_i, pv_s, pa_i, pa_ip, pv_ip, pe_s ) 241 270 ! 242 271 ! --- Ensure snow load is not too big --- ! … … 588 617 ! 589 618 END SUBROUTINE adv_y 619 620 621 SUBROUTINE Hbig( pdt, phi_max, phs_max, phip_max, pv_i, pv_s, pa_i, pa_ip, pv_ip, pe_s ) 622 !!------------------------------------------------------------------- 623 !! *** ROUTINE Hbig *** 624 !! 625 !! ** Purpose : Thickness correction in case advection scheme creates 626 !! abnormally tick ice or snow 627 !! 628 !! ** Method : 1- check whether ice thickness is larger than the surrounding 9-points 629 !! (before advection) and reduce it by adapting ice concentration 630 !! 2- check whether snow thickness is larger than the surrounding 9-points 631 !! (before advection) and reduce it by sending the excess in the ocean 632 !! 633 !! ** input : Max thickness of the surrounding 9-points 634 !!------------------------------------------------------------------- 635 REAL(wp) , INTENT(in ) :: pdt ! tracer time-step 636 REAL(wp), DIMENSION(:,:,:) , INTENT(in ) :: phi_max, phs_max, phip_max ! max ice thick from surrounding 9-pts 637 REAL(wp), DIMENSION(:,:,:) , INTENT(inout) :: pv_i, pv_s, pa_i, pa_ip, pv_ip 638 REAL(wp), DIMENSION(:,:,:,:), INTENT(inout) :: pe_s 639 ! 640 INTEGER :: ji, jj, jl ! dummy loop indices 641 REAL(wp) :: z1_dt, zhip, zhi, zhs, zfra 642 !!------------------------------------------------------------------- 643 ! 644 z1_dt = 1._wp / pdt 645 ! 646 DO jl = 1, jpl 647 648 DO jj = 1, jpj 649 DO ji = 1, jpi 650 IF ( pv_i(ji,jj,jl) > 0._wp ) THEN 651 ! 652 ! ! -- check h_ip -- ! 653 ! if h_ip is larger than the surrounding 9 pts => reduce h_ip and increase a_ip 654 IF( ln_pnd_H12 .AND. pv_ip(ji,jj,jl) > 0._wp ) THEN 655 zhip = pv_ip(ji,jj,jl) / MAX( epsi20, pa_ip(ji,jj,jl) ) 656 IF( zhip > phip_max(ji,jj,jl) .AND. pa_ip(ji,jj,jl) < 0.15 ) THEN 657 pa_ip(ji,jj,jl) = pv_ip(ji,jj,jl) / phip_max(ji,jj,jl) 658 ENDIF 659 ENDIF 660 ! 661 ! ! -- check h_i -- ! 662 ! if h_i is larger than the surrounding 9 pts => reduce h_i and increase a_i 663 zhi = pv_i(ji,jj,jl) / pa_i(ji,jj,jl) 664 IF( zhi > phi_max(ji,jj,jl) .AND. pa_i(ji,jj,jl) < 0.15 ) THEN 665 pa_i(ji,jj,jl) = pv_i(ji,jj,jl) / MIN( phi_max(ji,jj,jl), hi_max(jpl) ) !-- bound h_i to hi_max (99 m) 666 ENDIF 667 ! 668 ! ! -- check h_s -- ! 669 ! if h_s is larger than the surrounding 9 pts => put the snow excess in the ocean 670 zhs = pv_s(ji,jj,jl) / pa_i(ji,jj,jl) 671 IF( pv_s(ji,jj,jl) > 0._wp .AND. zhs > phs_max(ji,jj,jl) .AND. pa_i(ji,jj,jl) < 0.15 ) THEN 672 zfra = phs_max(ji,jj,jl) / MAX( zhs, epsi20 ) 673 ! 674 wfx_res(ji,jj) = wfx_res(ji,jj) + ( pv_s(ji,jj,jl) - pa_i(ji,jj,jl) * phs_max(ji,jj,jl) ) * rhos * z1_dt 675 hfx_res(ji,jj) = hfx_res(ji,jj) - SUM( pe_s(ji,jj,1:nlay_s,jl) ) * ( 1._wp - zfra ) * z1_dt ! W.m-2 <0 676 ! 677 pe_s(ji,jj,1:nlay_s,jl) = pe_s(ji,jj,1:nlay_s,jl) * zfra 678 pv_s(ji,jj,jl) = pa_i(ji,jj,jl) * phs_max(ji,jj,jl) 679 ENDIF 680 ! 681 ENDIF 682 END DO 683 END DO 684 END DO 685 ! 686 END SUBROUTINE Hbig 590 687 591 688
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