Changeset 5630 for branches/UKMO/dev_r5107_restart_func_and_date/NEMOGCM/NEMO/LIM_SRC_3/limitd_th.F90
- Timestamp:
- 2015-07-23T18:05:51+02:00 (9 years ago)
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branches/UKMO/dev_r5107_restart_func_and_date/NEMOGCM/NEMO/LIM_SRC_3/limitd_th.F90
r5500 r5630 91 91 !!------------------------------------------------------------------ 92 92 93 CALL wrk_alloc( jpi,jpj, zremap_flag ) ! integer94 CALL wrk_alloc( jpi,jpj,jpl-1, zdonor ) ! integer93 CALL wrk_alloc( jpi,jpj, zremap_flag ) 94 CALL wrk_alloc( jpi,jpj,jpl-1, zdonor ) 95 95 CALL wrk_alloc( jpi,jpj,jpl, zdhice, g0, g1, hL, hR, zht_i_b, dummy_es ) 96 96 CALL wrk_alloc( jpi,jpj,jpl-1, zdaice, zdvice ) 97 97 CALL wrk_alloc( jpi,jpj,jpl+1, zhbnew, kkstart = 0 ) 98 98 CALL wrk_alloc( (jpi+1)*(jpj+1), zvetamin, zvetamax ) 99 CALL wrk_alloc( (jpi+1)*(jpj+1), nind_i, nind_j ) ! integer99 CALL wrk_alloc( (jpi+1)*(jpj+1), nind_i, nind_j ) 100 100 CALL wrk_alloc( jpi,jpj, zhb0,zhb1,vt_i_init,vt_i_final,vt_s_init,vt_s_final,et_i_init,et_i_final,et_s_init,et_s_final ) 101 101 … … 128 128 rswitch = MAX( 0.0, SIGN( 1.0, a_i(ji,jj,jl) - epsi10 ) ) !0 if no ice and 1 if yes 129 129 ht_i(ji,jj,jl) = v_i(ji,jj,jl) / MAX( a_i(ji,jj,jl), epsi10 ) * rswitch 130 rswitch = MAX( 0.0, SIGN( 1.0, a_i_b(ji,jj,jl) - epsi10) ) !0 if no ice and 1 if yes130 rswitch = MAX( 0.0, SIGN( 1.0, a_i_b(ji,jj,jl) - epsi10) ) 131 131 zht_i_b(ji,jj,jl) = v_i_b(ji,jj,jl) / MAX( a_i_b(ji,jj,jl), epsi10 ) * rswitch 132 zdhice(ji,jj,jl) = ht_i(ji,jj,jl) - zht_i_b(ji,jj,jl)132 IF( a_i(ji,jj,jl) > epsi10 ) zdhice(ji,jj,jl) = ht_i(ji,jj,jl) - zht_i_b(ji,jj,jl) ! clem: useless IF statement? 133 133 END DO 134 134 END DO … … 172 172 ! 173 173 zhbnew(ii,ij,jl) = hi_max(jl) 174 IF ( a_i_b(ii,ij,jl) > epsi10 .AND. a_i_b(ii,ij,jl+1) > epsi10 ) THEN174 IF ( a_i_b(ii,ij,jl) > epsi10 .AND. a_i_b(ii,ij,jl+1) > epsi10 ) THEN 175 175 !interpolate between adjacent category growth rates 176 176 zslope = ( zdhice(ii,ij,jl+1) - zdhice(ii,ij,jl) ) / ( zht_i_b(ii,ij,jl+1) - zht_i_b(ii,ij,jl) ) 177 177 zhbnew(ii,ij,jl) = hi_max(jl) + zdhice(ii,ij,jl) + zslope * ( hi_max(jl) - zht_i_b(ii,ij,jl) ) 178 ELSEIF 178 ELSEIF( a_i_b(ii,ij,jl) > epsi10) THEN 179 179 zhbnew(ii,ij,jl) = hi_max(jl) + zdhice(ii,ij,jl) 180 ELSEIF 180 ELSEIF( a_i_b(ii,ij,jl+1) > epsi10) THEN 181 181 zhbnew(ii,ij,jl) = hi_max(jl) + zdhice(ii,ij,jl+1) 182 182 ENDIF … … 187 187 ii = nind_i(ji) 188 188 ij = nind_j(ji) 189 IF( a_i(ii,ij,jl) > epsi10 .AND. ht_i(ii,ij,jl) >= zhbnew(ii,ij,jl) ) THEN 189 190 ! clem: we do not want ht_i to be too close to either HR or HL otherwise a division by nearly 0 is possible 191 ! in lim_itd_fitline in the case (HR-HL) = 3(Hice - HL) or = 3(HR - Hice) 192 IF ( a_i(ii,ij,jl ) > epsi10 .AND. ht_i(ii,ij,jl ) > ( zhbnew(ii,ij,jl) - epsi10 ) ) THEN 190 193 zremap_flag(ii,ij) = 0 191 ELSEIF( a_i(ii,ij,jl+1) > epsi10 .AND. ht_i(ii,ij,jl+1) < = zhbnew(ii,ij,jl) ) THEN194 ELSEIF( a_i(ii,ij,jl+1) > epsi10 .AND. ht_i(ii,ij,jl+1) < ( zhbnew(ii,ij,jl) + epsi10 ) ) THEN 192 195 zremap_flag(ii,ij) = 0 193 196 ENDIF 194 197 195 198 !- 4.3 Check that each zhbnew does not exceed maximal values hi_max 199 IF( zhbnew(ii,ij,jl) < hi_max(jl-1) ) zremap_flag(ii,ij) = 0 196 200 IF( zhbnew(ii,ij,jl) > hi_max(jl+1) ) zremap_flag(ii,ij) = 0 197 IF( zhbnew(ii,ij,jl) < hi_max(jl-1) ) zremap_flag(ii,ij) = 0 201 ! clem bug: why is not the following instead? 202 !!IF( zhbnew(ii,ij,jl) < hi_max(jl-1) ) zremap_flag(ii,ij) = 0 203 !!IF( zhbnew(ii,ij,jl) > hi_max(jl ) ) zremap_flag(ii,ij) = 0 204 198 205 END DO 199 206 … … 219 226 DO jj = 1, jpj 220 227 DO ji = 1, jpi 221 zhb0(ji,jj) = hi_max(0) ! 0eme 222 zhb1(ji,jj) = hi_max(1) ! 1er 223 224 zhbnew(ji,jj,klbnd-1) = 0._wp 228 zhb0(ji,jj) = hi_max(0) 229 zhb1(ji,jj) = hi_max(1) 225 230 226 231 IF( a_i(ji,jj,kubnd) > epsi10 ) THEN 227 232 zhbnew(ji,jj,kubnd) = MAX( hi_max(kubnd-1), 3._wp * ht_i(ji,jj,kubnd) - 2._wp * zhbnew(ji,jj,kubnd-1) ) 228 233 ELSE 229 zhbnew(ji,jj,kubnd) = hi_max(kubnd) 230 !!? clem bug: since hi_max(jpl)=99, this limit is very high 231 !!? but I think it is erased in fitline subroutine 234 !clem bug zhbnew(ji,jj,kubnd) = hi_max(kubnd) 235 zhbnew(ji,jj,kubnd) = hi_max(kubnd-1) ! not used anyway 236 ENDIF 237 238 ! clem: we do not want ht_i_b to be too close to either HR or HL otherwise a division by nearly 0 is possible 239 ! in lim_itd_fitline in the case (HR-HL) = 3(Hice - HL) or = 3(HR - Hice) 240 IF ( zht_i_b(ji,jj,klbnd) < ( zhb0(ji,jj) + epsi10 ) ) THEN 241 zremap_flag(ji,jj) = 0 242 ELSEIF( zht_i_b(ji,jj,klbnd) > ( zhb1(ji,jj) - epsi10 ) ) THEN 243 zremap_flag(ji,jj) = 0 232 244 ENDIF 233 245 … … 248 260 249 261 IF( a_i(ii,ij,klbnd) > epsi10 ) THEN 262 250 263 zdh0 = zdhice(ii,ij,klbnd) !decrease of ice thickness in the lower category 251 IF( zdh0 < 0.0 ) THEN !remove area from category 1 264 265 IF( zdh0 < 0.0 ) THEN !remove area from category 1 252 266 zdh0 = MIN( -zdh0, hi_max(klbnd) ) 253 254 267 !Integrate g(1) from 0 to dh0 to estimate area melted 255 268 zetamax = MIN( zdh0, hR(ii,ij,klbnd) ) - hL(ii,ij,klbnd) 269 256 270 IF( zetamax > 0.0 ) THEN 257 zx1 = zetamax 258 zx2 = 0.5 * zetamax * zetamax 259 zda0 = g1(ii,ij,klbnd) * zx2 + g0(ii,ij,klbnd) * zx1 !ice area removed 260 ! Constrain new thickness <= ht_i 261 zdamax = a_i(ii,ij,klbnd) * (1.0 - ht_i(ii,ij,klbnd) / zht_i_b(ii,ij,klbnd) ) ! zdamax > 0 262 !ice area lost due to melting of thin ice 263 zda0 = MIN( zda0, zdamax ) 264 271 zx1 = zetamax 272 zx2 = 0.5 * zetamax * zetamax 273 zda0 = g1(ii,ij,klbnd) * zx2 + g0(ii,ij,klbnd) * zx1 ! ice area removed 274 zdamax = a_i(ii,ij,klbnd) * (1.0 - ht_i(ii,ij,klbnd) / zht_i_b(ii,ij,klbnd) ) ! Constrain new thickness <= ht_i 275 zda0 = MIN( zda0, zdamax ) ! ice area lost due to melting 276 ! of thin ice (zdamax > 0) 265 277 ! Remove area, conserving volume 266 278 ht_i(ii,ij,klbnd) = ht_i(ii,ij,klbnd) * a_i(ii,ij,klbnd) / ( a_i(ii,ij,klbnd) - zda0 ) … … 269 281 ENDIF 270 282 271 ELSE ! if ice accretion ! a_i > epsi10; zdh0 > 0 283 ELSE ! if ice accretion zdh0 > 0 284 ! zhbnew was 0, and is shifted to the right to account for thin ice growth in openwater (F0 = f1) 272 285 zhbnew(ii,ij,klbnd-1) = MIN( zdh0, hi_max(klbnd) ) 273 ! zhbnew was 0, and is shifted to the right to account for thin ice 274 ! growth in openwater (F0 = f1) 275 ENDIF ! zdh0 276 277 ENDIF ! a_i > epsi10 286 ENDIF 287 288 ENDIF 278 289 279 290 END DO … … 303 314 304 315 IF (zhbnew(ii,ij,jl) > hi_max(jl)) THEN ! transfer from jl to jl+1 305 306 316 ! left and right integration limits in eta space 307 317 zvetamin(ji) = MAX( hi_max(jl), hL(ii,ij,jl) ) - hL(ii,ij,jl) 308 zvetamax(ji) = MIN (zhbnew(ii,ij,jl), hR(ii,ij,jl) ) - hL(ii,ij,jl)318 zvetamax(ji) = MIN( zhbnew(ii,ij,jl), hR(ii,ij,jl) ) - hL(ii,ij,jl) 309 319 zdonor(ii,ij,jl) = jl 310 320 311 ELSE ! zhbnew(jl) <= hi_max(jl) ; transfer from jl+1 to jl 312 321 ELSE ! zhbnew(jl) <= hi_max(jl) ; transfer from jl+1 to jl 313 322 ! left and right integration limits in eta space 314 323 zvetamin(ji) = 0.0 … … 316 325 zdonor(ii,ij,jl) = jl + 1 317 326 318 ENDIF ! zhbnew(jl) > hi_max(jl)327 ENDIF 319 328 320 329 zetamax = MAX( zvetamax(ji), zvetamin(ji) ) ! no transfer if etamax < etamin … … 333 342 334 343 END DO 335 END DO ! jl klbnd -> kubnd - 1344 END DO 336 345 337 346 !!---------------------------------------------------------------------------------------------- … … 375 384 ENDIF 376 385 377 CALL wrk_dealloc( jpi,jpj, zremap_flag ) ! integer378 CALL wrk_dealloc( jpi,jpj,jpl-1, zdonor ) ! integer386 CALL wrk_dealloc( jpi,jpj, zremap_flag ) 387 CALL wrk_dealloc( jpi,jpj,jpl-1, zdonor ) 379 388 CALL wrk_dealloc( jpi,jpj,jpl, zdhice, g0, g1, hL, hR, zht_i_b, dummy_es ) 380 389 CALL wrk_dealloc( jpi,jpj,jpl-1, zdaice, zdvice ) 381 390 CALL wrk_dealloc( jpi,jpj,jpl+1, zhbnew, kkstart = 0 ) 382 391 CALL wrk_dealloc( (jpi+1)*(jpj+1), zvetamin, zvetamax ) 383 CALL wrk_dealloc( (jpi+1)*(jpj+1), nind_i, nind_j ) ! integer392 CALL wrk_dealloc( (jpi+1)*(jpj+1), nind_i, nind_j ) 384 393 CALL wrk_dealloc( jpi,jpj, zhb0,zhb1,vt_i_init,vt_i_final,vt_s_init,vt_s_final,et_i_init,et_i_final,et_s_init,et_s_final ) 385 394 … … 406 415 INTEGER , DIMENSION(jpi,jpj), INTENT(in ) :: zremap_flag ! 407 416 ! 408 INTEGER :: ji,jj! horizontal indices417 INTEGER :: ji,jj ! horizontal indices 409 418 REAL(wp) :: zh13 ! HbL + 1/3 * (HbR - HbL) 410 419 REAL(wp) :: zh23 ! HbL + 2/3 * (HbR - HbL) … … 413 422 !!------------------------------------------------------------------ 414 423 ! 415 !416 424 DO jj = 1, jpj 417 425 DO ji = 1, jpi 418 426 ! 419 427 IF( zremap_flag(ji,jj) == 1 .AND. a_i(ji,jj,num_cat) > epsi10 & 420 & .AND. hice(ji,jj) > 0._wp )THEN428 & .AND. hice(ji,jj) > 0._wp ) THEN 421 429 422 430 ! Initialize hL and hR 423 424 431 hL(ji,jj) = HbL(ji,jj) 425 432 hR(ji,jj) = HbR(ji,jj) 426 433 427 434 ! Change hL or hR if hice falls outside central third of range 428 429 435 zh13 = 1.0 / 3.0 * ( 2.0 * hL(ji,jj) + hR(ji,jj) ) 430 436 zh23 = 1.0 / 3.0 * ( hL(ji,jj) + 2.0 * hR(ji,jj) ) … … 435 441 436 442 ! Compute coefficients of g(eta) = g0 + g1*eta 437 438 443 zdhr = 1._wp / (hR(ji,jj) - hL(ji,jj)) 439 444 zwk1 = 6._wp * a_i(ji,jj,num_cat) * zdhr … … 442 447 g1(ji,jj) = 2._wp * zdhr * zwk1 * ( zwk2 - 0.5 ) 443 448 ! 444 ELSE 449 ELSE ! remap_flag = .false. or a_i < epsi10 445 450 hL(ji,jj) = 0._wp 446 451 hR(ji,jj) = 0._wp 447 452 g0(ji,jj) = 0._wp 448 453 g1(ji,jj) = 0._wp 449 ENDIF ! a_i > epsi10454 ENDIF 450 455 ! 451 456 END DO … … 471 476 472 477 INTEGER :: ji, jj, jl, jl2, jl1, jk ! dummy loop indices 473 INTEGER :: ii, ij ! indices when changing from 2D-1D is done478 INTEGER :: ii, ij ! indices when changing from 2D-1D is done 474 479 475 480 REAL(wp), POINTER, DIMENSION(:,:,:) :: zaTsfn … … 484 489 INTEGER, POINTER, DIMENSION(:) :: nind_i, nind_j ! compressed indices for i/j directions 485 490 486 INTEGER :: nbrem ! number of cells with ice to transfer 487 488 LOGICAL :: zdaice_negative ! true if daice < -puny 489 LOGICAL :: zdvice_negative ! true if dvice < -puny 490 LOGICAL :: zdaice_greater_aicen ! true if daice > aicen 491 LOGICAL :: zdvice_greater_vicen ! true if dvice > vicen 491 INTEGER :: nbrem ! number of cells with ice to transfer 492 492 !!------------------------------------------------------------------ 493 493 494 494 CALL wrk_alloc( jpi,jpj,jpl, zaTsfn ) 495 495 CALL wrk_alloc( jpi,jpj, zworka ) 496 CALL wrk_alloc( (jpi+1)*(jpj+1), nind_i, nind_j ) ! integer496 CALL wrk_alloc( (jpi+1)*(jpj+1), nind_i, nind_j ) 497 497 498 498 !---------------------------------------------------------------------------------------------- … … 504 504 END DO 505 505 506 !clem: I think the following is wrong (if enabled, it creates negative concentration/volume around -epsi10)507 ! !----------------------------------------------------------------------------------------------508 ! ! 2) Check for daice or dvice out of range, allowing for roundoff error509 ! !----------------------------------------------------------------------------------------------510 ! ! Note: zdaice < 0 or zdvice < 0 usually happens when category jl511 ! ! has a small area, with h(n) very close to a boundary. Then512 ! ! the coefficients of g(h) are large, and the computed daice and513 ! ! dvice can be in error. If this happens, it is best to transfer514 ! ! either the entire category or nothing at all, depending on which515 ! ! side of the boundary hice(n) lies.516 ! !-----------------------------------------------------------------517 ! DO jl = klbnd, kubnd-1518 !519 ! zdaice_negative = .false.520 ! zdvice_negative = .false.521 ! zdaice_greater_aicen = .false.522 ! zdvice_greater_vicen = .false.523 !524 ! DO jj = 1, jpj525 ! DO ji = 1, jpi526 !527 ! IF (zdonor(ji,jj,jl) > 0) THEN528 ! jl1 = zdonor(ji,jj,jl)529 !530 ! IF (zdaice(ji,jj,jl) < 0.0) THEN531 ! IF (zdaice(ji,jj,jl) > -epsi10) THEN532 ! IF ( ( jl1 == jl .AND. ht_i(ji,jj,jl1) > hi_max(jl) ) .OR. &533 ! ( jl1 == jl+1 .AND. ht_i(ji,jj,jl1) <= hi_max(jl) ) ) THEN534 ! zdaice(ji,jj,jl) = a_i(ji,jj,jl1) ! shift entire category535 ! zdvice(ji,jj,jl) = v_i(ji,jj,jl1)536 ! ELSE537 ! zdaice(ji,jj,jl) = 0.0 ! shift no ice538 ! zdvice(ji,jj,jl) = 0.0539 ! ENDIF540 ! ELSE541 ! zdaice_negative = .true.542 ! ENDIF543 ! ENDIF544 !545 ! IF (zdvice(ji,jj,jl) < 0.0) THEN546 ! IF (zdvice(ji,jj,jl) > -epsi10 ) THEN547 ! IF ( ( jl1 == jl .AND. ht_i(ji,jj,jl1) > hi_max(jl) ) .OR. &548 ! ( jl1 == jl+1 .AND. ht_i(ji,jj,jl1) <= hi_max(jl) ) ) THEN549 ! zdaice(ji,jj,jl) = a_i(ji,jj,jl1) ! shift entire category550 ! zdvice(ji,jj,jl) = v_i(ji,jj,jl1)551 ! ELSE552 ! zdaice(ji,jj,jl) = 0.0 ! shift no ice553 ! zdvice(ji,jj,jl) = 0.0554 ! ENDIF555 ! ELSE556 ! zdvice_negative = .true.557 ! ENDIF558 ! ENDIF559 !560 ! ! If daice is close to aicen, set daice = aicen.561 ! IF (zdaice(ji,jj,jl) > a_i(ji,jj,jl1) - epsi10 ) THEN562 ! IF (zdaice(ji,jj,jl) < a_i(ji,jj,jl1)+epsi10) THEN563 ! zdaice(ji,jj,jl) = a_i(ji,jj,jl1)564 ! zdvice(ji,jj,jl) = v_i(ji,jj,jl1)565 ! ELSE566 ! zdaice_greater_aicen = .true.567 ! ENDIF568 ! ENDIF569 !570 ! IF (zdvice(ji,jj,jl) > v_i(ji,jj,jl1)-epsi10) THEN571 ! IF (zdvice(ji,jj,jl) < v_i(ji,jj,jl1)+epsi10) THEN572 ! zdaice(ji,jj,jl) = a_i(ji,jj,jl1)573 ! zdvice(ji,jj,jl) = v_i(ji,jj,jl1)574 ! ELSE575 ! zdvice_greater_vicen = .true.576 ! ENDIF577 ! ENDIF578 !579 ! ENDIF ! donor > 0580 ! END DO581 ! END DO582 !583 ! END DO584 !clem585 506 !------------------------------------------------------------------------------- 586 ! 3) Transfer volume and energy between categories507 ! 2) Transfer volume and energy between categories 587 508 !------------------------------------------------------------------------------- 588 509 … … 604 525 605 526 jl1 = zdonor(ii,ij,jl) 606 rswitch = MAX( 0._wp , SIGN( 1._wp , v_i(ii,ij,jl1) - epsi 20 ) )607 zworka(ii,ij) = zdvice(ii,ij,jl) / MAX( v_i(ii,ij,jl1), epsi 20 ) * rswitch527 rswitch = MAX( 0._wp , SIGN( 1._wp , v_i(ii,ij,jl1) - epsi10 ) ) 528 zworka(ii,ij) = zdvice(ii,ij,jl) / MAX( v_i(ii,ij,jl1), epsi10 ) * rswitch 608 529 IF( jl1 == jl) THEN ; jl2 = jl1+1 609 530 ELSE ; jl2 = jl … … 613 534 ! Ice areas 614 535 !-------------- 615 616 536 a_i(ii,ij,jl1) = a_i(ii,ij,jl1) - zdaice(ii,ij,jl) 617 537 a_i(ii,ij,jl2) = a_i(ii,ij,jl2) + zdaice(ii,ij,jl) … … 620 540 ! Ice volumes 621 541 !-------------- 622 623 542 v_i(ii,ij,jl1) = v_i(ii,ij,jl1) - zdvice(ii,ij,jl) 624 543 v_i(ii,ij,jl2) = v_i(ii,ij,jl2) + zdvice(ii,ij,jl) … … 627 546 ! Snow volumes 628 547 !-------------- 629 630 548 zdvsnow = v_s(ii,ij,jl1) * zworka(ii,ij) 631 549 v_s(ii,ij,jl1) = v_s(ii,ij,jl1) - zdvsnow … … 635 553 ! Snow heat content 636 554 !-------------------- 637 638 555 zdesnow = e_s(ii,ij,1,jl1) * zworka(ii,ij) 639 556 e_s(ii,ij,1,jl1) = e_s(ii,ij,1,jl1) - zdesnow … … 643 560 ! Ice age 644 561 !-------------- 645 646 562 zdo_aice = oa_i(ii,ij,jl1) * zdaice(ii,ij,jl) 647 563 oa_i(ii,ij,jl1) = oa_i(ii,ij,jl1) - zdo_aice … … 651 567 ! Ice salinity 652 568 !-------------- 653 654 569 zdsm_vice = smv_i(ii,ij,jl1) * zworka(ii,ij) 655 570 smv_i(ii,ij,jl1) = smv_i(ii,ij,jl1) - zdsm_vice … … 659 574 ! Surface temperature 660 575 !--------------------- 661 662 576 zdaTsf = t_su(ii,ij,jl1) * zdaice(ii,ij,jl) 663 577 zaTsfn(ii,ij,jl1) = zaTsfn(ii,ij,jl1) - zdaTsf … … 710 624 CALL wrk_dealloc( jpi,jpj,jpl, zaTsfn ) 711 625 CALL wrk_dealloc( jpi,jpj, zworka ) 712 CALL wrk_dealloc( (jpi+1)*(jpj+1), nind_i, nind_j ) ! integer626 CALL wrk_dealloc( (jpi+1)*(jpj+1), nind_i, nind_j ) 713 627 ! 714 628 END SUBROUTINE lim_itd_shiftice … … 859 773 ENDIF 860 774 ! 861 CALL wrk_dealloc( jpi,jpj,jpl, zdonor ) ! interger775 CALL wrk_dealloc( jpi,jpj,jpl, zdonor ) 862 776 CALL wrk_dealloc( jpi,jpj,jpl, zdaice, zdvice ) 863 777 CALL wrk_dealloc( jpi,jpj, vt_i_init, vt_i_final, vt_s_init, vt_s_final )
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