Changeset 4990 for trunk/NEMOGCM/NEMO/LIM_SRC_2
- Timestamp:
- 2014-12-15T17:42:49+01:00 (9 years ago)
- Location:
- trunk/NEMOGCM/NEMO/LIM_SRC_2
- Files:
-
- 5 edited
-
limhdf_2.F90 (modified) (1 diff)
-
limistate_2.F90 (modified) (4 diffs)
-
limsbc_2.F90 (modified) (7 diffs)
-
limthd_2.F90 (modified) (4 diffs)
-
limthd_zdf_2.F90 (modified) (1 diff)
Legend:
- Unmodified
- Added
- Removed
-
trunk/NEMOGCM/NEMO/LIM_SRC_2/limhdf_2.F90
r3625 r4990 86 86 zdiv0(:, 1 ) = 0._wp 87 87 zdiv0(:,jpj) = 0._wp 88 IF( .NOT.lk_vopt_loop ) THEN 89 zflu (jpi,:) = 0._wp 90 zflv (jpi,:) = 0._wp 91 zdiv0(1, :) = 0._wp 92 zdiv0(jpi,:) = 0._wp 93 ENDIF 88 zflu (jpi,:) = 0._wp 89 zflv (jpi,:) = 0._wp 90 zdiv0(1, :) = 0._wp 91 zdiv0(jpi,:) = 0._wp 94 92 95 93 zconv = 1._wp !== horizontal diffusion using a Crant-Nicholson scheme ==! -
trunk/NEMOGCM/NEMO/LIM_SRC_2/limistate_2.F90
r4624 r4990 14 14 !! 'key_lim2' : LIM 2.0 sea-ice model 15 15 !!---------------------------------------------------------------------- 16 !!----------------------------------------------------------------------17 16 !! lim_istate_2 : Initialisation of diagnostics ice variables 18 17 !! lim_istate_init_2 : initialization of ice state and namelist read … … 34 33 PUBLIC lim_istate_2 ! routine called by lim_init_2.F90 35 34 36 ! !! ** namelist (namiceini) **37 LOGICAL :: ln_limini ! :Ice initialization state35 ! !! ** namelist (namiceini) ** 36 LOGICAL :: ln_limini ! Ice initialization state 38 37 REAL(wp) :: ttest ! threshold water temperature for initial sea ice 39 38 REAL(wp) :: hninn ! initial snow thickness in the north … … 51 50 !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) 52 51 !!---------------------------------------------------------------------- 53 54 52 CONTAINS 55 53 … … 71 69 IF( .NOT. ln_limini ) THEN 72 70 73 tfu(:,:) = tfreez( tsn(:,:,1,jp_sal) ) * tmask(:,:,1) ! freezing/melting point of sea water [Celcius]71 tfu(:,:) = eos_fzp( tsn(:,:,1,jp_sal) ) * tmask(:,:,1) ! freezing/melting point of sea water [Celcius] 74 72 75 73 DO jj = 1, jpj -
trunk/NEMOGCM/NEMO/LIM_SRC_2/limsbc_2.F90
r4306 r4990 30 30 USE sbc_oce ! surface boundary condition: ocean 31 31 USE sbccpl 32 USE cpl_oasis3, ONLY : lk_cpl33 32 USE oce , ONLY : sshn, sshb, snwice_mass, snwice_mass_b, snwice_fmass 34 33 USE albedo ! albedo parameters … … 37 36 USE wrk_nemo ! work arrays 38 37 USE in_out_manager ! I/O manager 39 USE diaar5, ONLY : lk_diaar540 38 USE iom ! I/O library 41 39 USE prtctl ! Print control … … 97 95 !! - emp : freshwater budget: mass flux 98 96 !! - sfx : freshwater budget: salt flux due to Freezing/Melting 99 !! - utau : sea surface i-stress (ocean referential)100 !! - vtau : sea surface j-stress (ocean referential)101 97 !! - fr_i : ice fraction 102 98 !! - tn_ice : sea-ice surface temperature 103 !! - alb_ice : sea-ice albe rdo (lk_cpl=T)99 !! - alb_ice : sea-ice albedo (lk_cpl=T) 104 100 !! 105 101 !! References : Goosse, H. et al. 1996, Bul. Soc. Roy. Sc. Liege, 65, 87-90. … … 183 179 184 180 ! computation the solar flux at ocean surface 185 #if defined key_coupled 186 zqsr = qsr_tot(ji,jj) + ( fstric(ji,jj) - qsr_ice(ji,jj,1) ) * ( 1.0 - pfrld(ji,jj) )187 #else 188 zqsr = pfrld(ji,jj) * qsr(ji,jj) + ( 1. - pfrld(ji,jj) ) * fstric(ji,jj)189 #endif 181 IF( lk_cpl ) THEN 182 zqsr = qsr_tot(ji,jj) + ( fstric(ji,jj) - qsr_ice(ji,jj,1) ) * ( 1.0 - pfrld(ji,jj) ) 183 ELSE 184 zqsr = pfrld(ji,jj) * qsr(ji,jj) + ( 1. - pfrld(ji,jj) ) * fstric(ji,jj) 185 ENDIF 190 186 ! computation the non solar heat flux at ocean surface 191 187 zqns = - ( 1. - thcm(ji,jj) ) * zqsr & ! part of the solar energy used in leads … … 206 202 ! 207 203 ! mass flux at the ocean-atmosphere interface (open ocean fraction = leads area) 208 #if defined key_coupled209 204 ! ! coupled mode: 210 zemp = + emp_tot(ji,jj) & ! net mass flux over the grid cell (ice+ocean area) 211 & - emp_ice(ji,jj) * ( 1. - pfrld(ji,jj) ) ! minus the mass flux intercepted by sea-ice 212 #else 213 ! ! forced mode: 214 zemp = + emp(ji,jj) * frld(ji,jj) & ! mass flux over open ocean fraction 215 & - tprecip(ji,jj) * ( 1. - frld(ji,jj) ) & ! liquid precip. over ice reaches directly the ocean 216 & + sprecip(ji,jj) * ( 1. - pfrld(ji,jj) ) ! snow is intercepted by sea-ice (previous frld) 217 #endif 205 IF( lk_cpl ) THEN 206 zemp = + emp_tot(ji,jj) & ! net mass flux over the grid cell (ice+ocean area) 207 & - emp_ice(ji,jj) * ( 1. - pfrld(ji,jj) ) ! minus the mass flux intercepted by sea-ice 208 ELSE 209 ! ! forced mode: 210 zemp = + emp(ji,jj) * frld(ji,jj) & ! mass flux over open ocean fraction 211 & - tprecip(ji,jj) * ( 1. - frld(ji,jj) ) & ! liquid precip. over ice reaches directly the ocean 212 & + sprecip(ji,jj) * ( 1. - pfrld(ji,jj) ) ! snow is intercepted by sea-ice (previous frld) 213 ENDIF 218 214 ! 219 215 ! mass flux at the ocean/ice interface (sea ice fraction) … … 245 241 ENDIF 246 242 247 CALL iom_put( 'hflx_ice_cea', - fdtcn(:,:) ) 248 CALL iom_put( 'qns_io_cea', qns(:,:) - zqnsoce(:,:) * pfrld(:,:) ) 249 CALL iom_put( 'qsr_io_cea', fstric(:,:) * (1.e0 - pfrld(:,:)) ) 250 251 IF( lk_diaar5 ) THEN ! AR5 diagnostics 252 CALL iom_put( 'isnwmlt_cea' , rdm_snw(:,:) * r1_rdtice ) 253 CALL iom_put( 'fsal_virt_cea', soce_0(:,:) * rdm_ice(:,:) * r1_rdtice ) 254 CALL iom_put( 'fsal_real_cea', - sice_0(:,:) * rdm_ice(:,:) * r1_rdtice ) 255 ENDIF 243 IF( iom_use('hflx_ice_cea' ) ) CALL iom_put( 'hflx_ice_cea', - fdtcn(:,:) ) 244 IF( iom_use('qns_io_cea' ) ) CALL iom_put( 'qns_io_cea', qns(:,:) - zqnsoce(:,:) * pfrld(:,:) ) 245 IF( iom_use('qsr_io_cea' ) ) CALL iom_put( 'qsr_io_cea', fstric(:,:) * (1.e0 - pfrld(:,:)) ) 246 247 IF( iom_use('isnwmlt_cea' ) ) CALL iom_put( 'isnwmlt_cea' , rdm_snw(:,:) * r1_rdtice ) 248 IF( iom_use('fsal_virt_cea') ) CALL iom_put( 'fsal_virt_cea', soce_0(:,:) * rdm_ice(:,:) * r1_rdtice ) 249 IF( iom_use('fsal_real_cea') ) CALL iom_put( 'fsal_real_cea', - sice_0(:,:) * rdm_ice(:,:) * r1_rdtice ) 256 250 257 251 !-----------------------------------------------! … … 259 253 !-----------------------------------------------! 260 254 261 #if defined key_coupled 262 tn_ice(:,:,1) = sist(:,:) ! sea-ice surface temperature263 ht_i(:,:,1) = hicif(:,:)264 ht_s(:,:,1) = hsnif(:,:)265 a_i(:,:,1) = fr_i(:,:)266 ! ! Computation of snow/ice and ocean albedo267 CALL albedo_ice( tn_ice, ht_i, ht_s, zalbp, zalb )268 alb_ice(:,:,1) = 0.5 * ( zalbp(:,:,1) + zalb (:,:,1) ) ! Ice albedo (mean clear and overcast skys)269 CALL iom_put( "icealb_cea", alb_ice(:,:,1) * fr_i(:,:) ) ! ice albedo270 #endif 255 IF( lk_cpl) THEN 256 tn_ice(:,:,1) = sist(:,:) ! sea-ice surface temperature 257 ht_i(:,:,1) = hicif(:,:) 258 ht_s(:,:,1) = hsnif(:,:) 259 a_i(:,:,1) = fr_i(:,:) 260 ! ! Computation of snow/ice and ocean albedo 261 CALL albedo_ice( tn_ice, ht_i, ht_s, zalbp, zalb ) 262 alb_ice(:,:,1) = 0.5 * ( zalbp(:,:,1) + zalb (:,:,1) ) ! Ice albedo (mean clear and overcast skys) 263 IF( iom_use('icealb_cea' ) ) CALL iom_put( 'icealb_cea', alb_ice(:,:,1) * fr_i(:,:) ) ! ice albedo 264 ENDIF 271 265 272 266 IF(ln_ctl) THEN ! control print 273 267 CALL prt_ctl(tab2d_1=qsr , clinfo1=' lim_sbc: qsr : ', tab2d_2=qns , clinfo2=' qns : ') 274 268 CALL prt_ctl(tab2d_1=emp , clinfo1=' lim_sbc: emp : ', tab2d_2=sfx , clinfo2=' sfx : ') 275 CALL prt_ctl(tab2d_1=utau , clinfo1=' lim_sbc: utau : ', mask1=umask, &276 & tab2d_2=vtau , clinfo2=' vtau : ' , mask2=vmask )277 269 CALL prt_ctl(tab2d_1=fr_i , clinfo1=' lim_sbc: fr_i : ', tab2d_2=tn_ice(:,:,1), clinfo2=' tn_ice : ') 278 270 ENDIF -
trunk/NEMOGCM/NEMO/LIM_SRC_2/limthd_2.F90
r4696 r4990 33 33 USE limtab_2 34 34 USE prtctl ! Print control 35 USE cpl_oasis3, ONLY : lk_cpl36 USE diaar5 , ONLY : lk_diaar537 35 USE lib_fortran ! Fortran utilities (allows no signed zero when 'key_nosignedzero' defined) 38 36 … … 219 217 220 218 ! partial computation of the lead energy budget (qldif) 221 #if defined key_coupled222 qldif(ji,jj) = tms(ji,jj) * rdt_ice &223 & * ( ( qsr_tot(ji,jj) - qsr_ice(ji,jj,1) * zfricp ) * ( 1.0 - thcm(ji,jj) ) &224 & + ( qns_tot(ji,jj) - qns_ice(ji,jj,1) * zfricp ) &225 & + frld(ji,jj) * ( fdtcn(ji,jj) + ( 1.0 - zindb ) * fsbbq(ji,jj) ) )226 #else 227 qldif(ji,jj) = tms(ji,jj) * rdt_ice * frld(ji,jj) &228 & * ( qsr(ji,jj) * ( 1.0 - thcm(ji,jj) ) &229 & + qns(ji,jj) + fdtcn(ji,jj) &230 & + ( 1.0 - zindb ) * fsbbq(ji,jj) )231 #endif 219 IF( lk_cpl ) THEN 220 qldif(ji,jj) = tms(ji,jj) * rdt_ice & 221 & * ( ( qsr_tot(ji,jj) - qsr_ice(ji,jj,1) * zfricp ) * ( 1.0 - thcm(ji,jj) ) & 222 & + ( qns_tot(ji,jj) - qns_ice(ji,jj,1) * zfricp ) & 223 & + frld(ji,jj) * ( fdtcn(ji,jj) + ( 1.0 - zindb ) * fsbbq(ji,jj) ) ) 224 ELSE 225 qldif(ji,jj) = tms(ji,jj) * rdt_ice * frld(ji,jj) & 226 & * ( qsr(ji,jj) * ( 1.0 - thcm(ji,jj) ) & 227 & + qns(ji,jj) + fdtcn(ji,jj) & 228 & + ( 1.0 - zindb ) * fsbbq(ji,jj) ) 229 ENDIF 232 230 ! parlat : percentage of energy used for lateral ablation (0.0) 233 231 zfntlat = 1.0 - MAX( rzero , SIGN( rone , - qldif(ji,jj) ) ) … … 440 438 !-------------------------------------------------------------------------------- 441 439 ztmp(:,:) = 1. - pfrld(:,:) ! fraction of ice after the dynamic, before the thermodynamic 442 CALL iom_put( 'ist_cea', (sist(:,:) - rt0) * ztmp(:,:) ) ! Ice surface temperature [Celius] 443 CALL iom_put( 'qsr_ai_cea', qsr_ice(:,:,1) * ztmp(:,:) ) ! Solar flux over the ice [W/m2] 444 CALL iom_put( 'qns_ai_cea', qns_ice(:,:,1) * ztmp(:,:) ) ! Non-solar flux over the ice [W/m2] 445 IF( .NOT. lk_cpl ) CALL iom_put( 'qla_ai_cea', qla_ice(:,:,1) * ztmp(:,:) ) ! Latent flux over the ice [W/m2] 440 IF( iom_use('ist_cea' ) ) CALL iom_put( 'ist_cea', (sist(:,:) - rt0) * ztmp(:,:) ) ! Ice surface temperature [Celius] 441 IF( iom_use('qsr_ai_cea' ) ) CALL iom_put( 'qsr_ai_cea', qsr_ice(:,:,1) * ztmp(:,:) ) ! Solar flux over the ice [W/m2] 442 IF( iom_use('qns_ai_cea' ) ) CALL iom_put( 'qns_ai_cea', qns_ice(:,:,1) * ztmp(:,:) ) ! Non-solar flux over the ice [W/m2] 443 IF( iom_use('qla_ai_cea' ) .AND. .NOT. lk_cpl ) & 444 & CALL iom_put( 'qla_ai_cea', qla_ice(:,:,1) * ztmp(:,:) ) ! Latent flux over the ice [W/m2] 446 445 ! 447 CALL iom_put( 'snowthic_cea', hsnif (:,:) * fr_i(:,:) ) ! Snow thickness[m]448 CALL iom_put( 'icethic_cea' , hicif (:,:) * fr_i(:,:) ) ! Ice thickness[m]446 IF( iom_use('snowthic_cea')) CALL iom_put( 'snowthic_cea', hsnif (:,:) * fr_i(:,:) ) ! Snow thickness [m] 447 IF( iom_use('icethic_cea' )) CALL iom_put( 'icethic_cea' , hicif (:,:) * fr_i(:,:) ) ! Ice thickness [m] 449 448 zztmp = 1.0 / rdt_ice 450 CALL iom_put( 'iceprod_cea' , hicifp (:,:) * zztmp ) ! Ice produced [m/s] 451 IF( lk_diaar5 ) THEN 452 CALL iom_put( 'snowmel_cea' , rdm_snw(:,:) * zztmp ) ! Snow melt [kg/m2/s] 453 zztmp = rhoic / rdt_ice 454 CALL iom_put( 'sntoice_cea' , zdvonif(:,:) * zztmp ) ! Snow to Ice transformation [kg/m2/s] 455 CALL iom_put( 'ticemel_cea' , zdvosif(:,:) * zztmp ) ! Melt at Sea Ice top [kg/m2/s] 456 CALL iom_put( 'bicemel_cea' , zdvomif(:,:) * zztmp ) ! Melt at Sea Ice bottom [kg/m2/s] 449 IF( iom_use('iceprod_cea') ) CALL iom_put( 'iceprod_cea' , hicifp (:,:) * zztmp ) ! Ice produced [m/s] 450 IF( iom_use('iiceconc' ) ) CALL iom_put( 'iiceconc' , fr_i(:,:) ) ! Ice concentration [-] 451 IF( iom_use('snowmel_cea') ) CALL iom_put( 'snowmel_cea' , rdm_snw(:,:) * zztmp ) ! Snow melt [kg/m2/s] 452 zztmp = rhoic / rdt_ice 453 IF( iom_use('sntoice_cea') ) CALL iom_put( 'sntoice_cea' , zdvonif(:,:) * zztmp ) ! Snow to Ice transformation [kg/m2/s] 454 IF( iom_use('ticemel_cea') ) CALL iom_put( 'ticemel_cea' , zdvosif(:,:) * zztmp ) ! Melt at Sea Ice top [kg/m2/s] 455 IF( iom_use('bicemel_cea') ) CALL iom_put( 'bicemel_cea' , zdvomif(:,:) * zztmp ) ! Melt at Sea Ice bottom [kg/m2/s] 456 IF( iom_use('licepro_cea') ) THEN 457 457 zlicegr(:,:) = MAX( 0.e0, rdm_ice(:,:)-zlicegr(:,:) ) 458 CALL iom_put( 'licepro_cea' , zlicegr(:,:) * zztmp ) ! Lateral sea ice growth[kg/m2/s]458 CALL iom_put( 'licepro_cea' , zlicegr(:,:) * zztmp ) ! Lateral sea ice growth [kg/m2/s] 459 459 ENDIF 460 460 ! 461 461 ! Compute the Eastward & Northward sea-ice transport 462 zztmp = 0.25 * rhoic 463 DO jj = 1, jpjm1 464 DO ji = 1, jpim1 ! NO vector opt. 465 ! Ice velocities, volume & transport at U & V-points 466 zuice_m = u_ice(ji+1,jj+1) + u_ice(ji+1,jj ) 467 zvice_m = v_ice(ji+1,jj+1) + v_ice(ji ,jj+1) 468 zhice_u = hicif(ji,jj)*e2t(ji,jj)*fr_i(ji,jj) + hicif(ji+1,jj )*e2t(ji+1,jj )*fr_i(ji+1,jj ) 469 zhice_v = hicif(ji,jj)*e1t(ji,jj)*fr_i(ji,jj) + hicif(ji ,jj+1)*e1t(ji ,jj+1)*fr_i(ji ,jj+1) 470 zu_imasstr(ji,jj) = zztmp * zhice_u * zuice_m 471 zv_imasstr(ji,jj) = zztmp * zhice_v * zvice_m 472 END DO 473 END DO 474 CALL lbc_lnk( zu_imasstr, 'U', -1. ) ; CALL lbc_lnk( zv_imasstr, 'V', -1. ) 475 CALL iom_put( 'u_imasstr', zu_imasstr(:,:) ) ! Ice transport along i-axis at U-point [kg/s] 476 CALL iom_put( 'v_imasstr', zv_imasstr(:,:) ) ! Ice transport along j-axis at V-point [kg/s] 462 IF( iom_use('u_imasstr') ) THEN 463 zztmp = 0.25 * rhoic 464 DO jj = 1, jpjm1 465 DO ji = 1, jpim1 ! NO vector opt. 466 ! Ice velocities, volume & transport at U-points 467 zuice_m = u_ice(ji+1,jj+1) + u_ice(ji+1,jj ) 468 zhice_u = hicif(ji,jj)*e2t(ji,jj)*fr_i(ji,jj) + hicif(ji+1,jj )*e2t(ji+1,jj )*fr_i(ji+1,jj ) 469 zu_imasstr(ji,jj) = zztmp * zhice_u * zuice_m 470 END DO 471 END DO 472 CALL lbc_lnk( zu_imasstr, 'U', -1. ) 473 CALL iom_put( 'u_imasstr', zu_imasstr(:,:) ) ! Ice transport along i-axis at U-point [kg/s] 474 ENDIF 475 IF( iom_use('v_imasstr') ) THEN 476 zztmp = 0.25 * rhoic 477 DO jj = 1, jpjm1 478 DO ji = 1, jpim1 ! NO vector opt. 479 ! Ice velocities, volume & transport at V-points 480 zvice_m = v_ice(ji+1,jj+1) + v_ice(ji ,jj+1) 481 zhice_v = hicif(ji,jj)*e1t(ji,jj)*fr_i(ji,jj) + hicif(ji ,jj+1)*e1t(ji ,jj+1)*fr_i(ji ,jj+1) 482 zv_imasstr(ji,jj) = zztmp * zhice_v * zvice_m 483 END DO 484 END DO 485 CALL lbc_lnk( zv_imasstr, 'V', -1. ) 486 CALL iom_put( 'v_imasstr', zv_imasstr(:,:) ) ! Ice transport along j-axis at V-point [kg/s] 487 ENDIF 477 488 478 489 !! Fram Strait sea-ice transport (sea-ice + snow) (in ORCA2 = 5 points) 479 IF( cp_cfg == "orca" .AND. jp_cfg == 2 ) THEN ! ORCA R2 configuration490 IF( iom_use('fram_trans') .and. cp_cfg == "orca" .AND. jp_cfg == 2 ) THEN ! ORCA R2 configuration 480 491 DO jj = mj0(137), mj1(137) ! B grid 481 492 IF( mj0(jj-1) >= nldj ) THEN … … 491 502 ENDIF 492 503 504 IF( iom_use('ice_pres') .OR. iom_use('ist_ipa') .OR. iom_use('uice_ipa') .OR. iom_use('vice_ipa') ) THEN 493 505 !! ce ztmp(:,:) = 1. - AINT( frld(:,:), wp ) ! return 1 as soon as there is ice 494 506 !! ce A big warning because the model crashes on IDRIS/IBM SP6 with xlf 13.1.0.3, see ticket #761 495 !! ce We Unroll the loop and everything works fine 496 DO jj = 1, jpj 497 DO ji = 1, jpi 498 ztmp(ji,jj) = 1. - AINT( frld(ji,jj), wp ) ! return 1 as soon as there is ice 499 END DO 500 END DO 501 ! 502 CALL iom_put( 'ice_pres' , ztmp ) ! Ice presence [-] 503 CALL iom_put( 'ist_ipa' , ( sist(:,:) - rt0 ) * ztmp(:,:) ) ! Ice surface temperature [Celius] 504 CALL iom_put( 'uice_ipa' , u_ice(:,:) * ztmp(:,:) ) ! Ice velocity along i-axis at I-point [m/s] 505 CALL iom_put( 'vice_ipa' , v_ice(:,:) * ztmp(:,:) ) ! Ice velocity along j-axis at I-point [m/s] 507 !! ce We Unroll the loop and everything works fine 508 DO jj = 1, jpj 509 DO ji = 1, jpi 510 ztmp(ji,jj) = 1. - AINT( frld(ji,jj), wp ) ! return 1 as soon as there is ice 511 END DO 512 END DO 513 ! 514 IF( iom_use('ice_pres') ) CALL iom_put( 'ice_pres', ztmp ) ! Ice presence [-] 515 IF( iom_use('ist_ipa' ) ) CALL iom_put( 'ist_ipa' , ( sist(:,:) - rt0 ) * ztmp(:,:) ) ! Ice surface temperature [Celius] 516 IF( iom_use('uice_ipa') ) CALL iom_put( 'uice_ipa', u_ice(:,:) * ztmp(:,:) ) ! Ice velocity along i-axis at I-point [m/s] 517 IF( iom_use('vice_ipa') ) CALL iom_put( 'vice_ipa', v_ice(:,:) * ztmp(:,:) ) ! Ice velocity along j-axis at I-point [m/s] 518 ENDIF 506 519 507 520 IF(ln_ctl) THEN -
trunk/NEMOGCM/NEMO/LIM_SRC_2/limthd_zdf_2.F90
r4306 r4990 18 18 USE ice_2 19 19 USE limistate_2 20 USE cpl_oasis3, ONLY : lk_cpl20 USE sbc_oce, ONLY : lk_cpl 21 21 USE in_out_manager 22 22 USE lib_mpp ! MPP library
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