- Timestamp:
- 2016-07-01T18:02:45+02:00 (8 years ago)
- File:
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- 1 edited
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branches/2015/dev_r5003_MERCATOR6_CRS/NEMOGCM/NEMO/OPA_SRC/TRA/tranxt.F90
r5602 r6772 49 49 USE agrif_opa_interp 50 50 #endif 51 USE crs 51 52 52 53 IMPLICIT NONE … … 56 57 PUBLIC tra_nxt_fix ! to be used in trcnxt 57 58 PUBLIC tra_nxt_vvl ! to be used in trcnxt 59 PUBLIC tra_nxt_vvl_crs ! to be used in trcnxt 58 60 59 61 REAL(wp) :: rbcp ! Brown & Campana parameters for semi-implicit hpg … … 349 351 END SUBROUTINE tra_nxt_vvl 350 352 353 SUBROUTINE tra_nxt_vvl_crs( kt, kit000, p2dt, cdtype, ptb, ptn, pta, psbc_tc, psbc_tc_b, kjpt ) 354 !!---------------------------------------------------------------------- 355 !! *** ROUTINE tra_nxt_vvl *** 356 !! 357 !! ** Purpose : Time varying volume: apply the Asselin time filter 358 !! and swap the tracer fields. 359 !! 360 !! ** Method : - Apply a thickness weighted Asselin time filter on now fields. 361 !! - save in (ta,sa) a thickness weighted average over the three 362 !! time levels which will be used to compute rdn and thus the semi- 363 !! implicit hydrostatic pressure gradient (ln_dynhpg_imp = T) 364 !! - swap tracer fields to prepare the next time_step. 365 !! This can be summurized for tempearture as: 366 !! ztm = ( e3t_n*tn + rbcp*[ e3t_b*tb - 2 e3t_n*tn + e3t_a*ta ] ) ln_dynhpg_imp = T 367 !! /( e3t_n + rbcp*[ e3t_b - 2 e3t_n + e3t_a ] ) 368 !! ztm = 0 otherwise 369 !! tb = ( e3t_n*tn + atfp*[ e3t_b*tb - 2 e3t_n*tn + e3t_a*ta ] ) 370 !! /( e3t_n + atfp*[ e3t_b - 2 e3t_n + e3t_a ] ) 371 !! tn = ta 372 !! ta = zt (NB: reset to 0 after eos_bn2 call) 373 !! 374 !! ** Action : - (tb,sb) and (tn,sn) ready for the next time step 375 !! - (ta,sa) time averaged (t,s) (ln_dynhpg_imp = T) 376 !!---------------------------------------------------------------------- 377 INTEGER , INTENT(in ) :: kt ! ocean time-step index 378 INTEGER , INTENT(in ) :: kit000 ! first time step index 379 REAL(wp) , INTENT(in ), DIMENSION(jpk) :: p2dt ! time-step 380 CHARACTER(len=3), INTENT(in ) :: cdtype ! =TRA or TRC (tracer indicator) 381 INTEGER , INTENT(in ) :: kjpt ! number of tracers 382 REAL(wp) , INTENT(inout), DIMENSION(jpi,jpj,jpk,kjpt) :: ptb ! before tracer fields 383 REAL(wp) , INTENT(inout), DIMENSION(jpi,jpj,jpk,kjpt) :: ptn ! now tracer fields 384 REAL(wp) , INTENT(inout), DIMENSION(jpi,jpj,jpk,kjpt) :: pta ! tracer trend 385 REAL(wp) , INTENT(in ), DIMENSION(jpi,jpj,kjpt) :: psbc_tc ! surface tracer content 386 REAL(wp) , INTENT(in ), DIMENSION(jpi,jpj,kjpt) :: psbc_tc_b ! before surface tracer content 387 388 !! 389 LOGICAL :: ll_tra_hpg, ll_traqsr, ll_rnf ! local logical 390 INTEGER :: ji, jj, jk, jn ! dummy loop indices 391 REAL(wp) :: zfact1, ztc_a , ztc_n , ztc_b , ztc_f , ztc_d ! local scalar 392 REAL(wp) :: zfact2, ze3t_b, ze3t_n, ze3t_a, ze3t_f, ze3t_d ! - - 393 !!---------------------------------------------------------------------- 394 !!---------------------------------------------------------------------- 395 ! 396 IF( kt == kit000 ) THEN 397 IF(lwp) WRITE(numout,*) 398 IF(lwp) WRITE(numout,*) 'tra_nxt_vvl : time stepping', cdtype 399 IF(lwp) WRITE(numout,*) '~~~~~~~~~~~' 400 ENDIF 401 ! 402 IF( cdtype == 'TRA' ) THEN 403 ll_tra_hpg = ln_dynhpg_imp ! active tracers case and semi-implicit hpg 404 ll_traqsr = ln_traqsr ! active tracers case and solar penetration 405 ll_rnf = ln_rnf ! active tracers case and river runoffs 406 ELSE 407 ll_tra_hpg = .FALSE. ! passive tracers case or NO semi-implicit hpg 408 ll_traqsr = .FALSE. ! active tracers case and NO solar penetration 409 ll_rnf = .FALSE. ! passive tracers or NO river runoffs 410 ENDIF 411 ! 412 DO jn = 1, kjpt 413 DO jk = 1, jpkm1 414 zfact1 = atfp * p2dt(jk) 415 zfact2 = zfact1 / rau0 416 DO jj = 1, jpj 417 DO ji = 1, jpi 418 ze3t_b = fse3t_b_crs(ji,jj,jk) 419 ze3t_n = fse3t_n_crs(ji,jj,jk) 420 ze3t_a = fse3t_a_crs(ji,jj,jk) 421 ! ! tracer content at Before, now and after 422 ztc_b = ptb(ji,jj,jk,jn) * ze3t_b 423 ztc_n = ptn(ji,jj,jk,jn) * ze3t_n 424 ztc_a = pta(ji,jj,jk,jn) * ze3t_a 425 ! 426 ze3t_d = ze3t_a - 2. * ze3t_n + ze3t_b 427 ztc_d = ztc_a - 2. * ztc_n + ztc_b 428 ! 429 ze3t_f = ze3t_n + atfp * ze3t_d 430 ztc_f = ztc_n + atfp * ztc_d 431 ! 432 IF( jk == 1 ) THEN ! first level 433 ze3t_f = ze3t_f - zfact2 * ( emp_b_crs(ji,jj) - emp_crs(ji,jj) + rnf_crs(ji,jj) - rnf_b_crs(ji,jj) ) 434 ztc_f = ztc_f - zfact1 * ( psbc_tc(ji,jj,jn) - psbc_tc_b(ji,jj,jn) ) 435 ENDIF 436 !cbr as it is a subroutine dedicated to crs, TRA options are not necessary 437 !cbr IF( ll_traqsr .AND. jn == jp_tem .AND. jk <= nksr ) & ! solar penetration (temperature only) 438 !cbr & ztc_f = ztc_f - zfact1 * ( qsr_hc(ji,jj,jk) - qsr_hc_b(ji,jj,jk) ) 439 !cbr 440 !cbr IF( ll_rnf .AND. jk <= nk_rnf(ji,jj) ) & ! river runoffs 441 !cbr & ztc_f = ztc_f - zfact1 * ( rnf_tsc(ji,jj,jn) - rnf_tsc_b(ji,jj,jn) ) & 442 !cbr & * fse3t_n(ji,jj,jk) / h_rnf(ji,jj) 443 444 ze3t_f = 1.e0 / ze3t_f 445 ptb(ji,jj,jk,jn) = ztc_f * ze3t_f ! ptb <-- ptn filtered 446 ptn(ji,jj,jk,jn) = pta(ji,jj,jk,jn) ! ptn <-- pta 447 ! 448 IF( ll_tra_hpg ) THEN ! semi-implicit hpg (T & S only) 449 ze3t_d = 1.e0 / ( ze3t_n + rbcp * ze3t_d ) 450 pta(ji,jj,jk,jn) = ze3t_d * ( ztc_n + rbcp * ztc_d ) ! ta <-- Brown & Campana average 451 ENDIF 452 END DO 453 END DO 454 END DO 455 ! 456 END DO 457 ! 458 END SUBROUTINE tra_nxt_vvl_crs 459 460 351 461 !!====================================================================== 352 462 END MODULE tranxt
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