Changeset 2823 for branches/2011/dev_r2787_PISCES_improvment/NEMOGCM/NEMO/TOP_SRC/PISCES/p4zlys.F90

Timestamp:

2011-08-09T13:11:24+02:00 (13 years ago)

Author:

cetlod

Message:

Add new parameterisation in PISCES, see ticket #854

File:

• branches/2011/dev_r2787_PISCES_improvment/NEMOGCM/NEMO/TOP_SRC/PISCES/p4zlys.F90 (modified) (7 diffs)

branches/2011/dev_r2787_PISCES_improvment/NEMOGCM/NEMO/TOP_SRC/PISCES/p4zlys.F90

@@ -9 +9 @@
    !!             1.0  !  2004     (O. Aumont) modifications
    !!             2.0  !  2007-12  (C. Ethe, G. Madec)  F90
+   !!                  !  2011-02  (J. Simeon, J. Orr)  Calcon salinity dependence
+   !!             3.4  !  2011-06  (O. Aumont, C. Ethe) Improvment of calcite dissolution
    !!----------------------------------------------------------------------
 #if defined key_pisces
@@ -17 +19 @@
    !!   p4z_lys_init   :   Read the namelist parameters
    !!----------------------------------------------------------------------
-   USE trc
-   USE oce_trc         !
-   USE trc
-   USE sms_pisces
-   USE prtctl_trc
-   USE iom
+   USE oce_trc         !  shared variables between ocean and passive tracers
+   USE trc             !  passive tracers common variables 
+   USE sms_pisces      !  PISCES Source Minus Sink variables
+   USE prtctl_trc      !  print control for debugging
+   USE iom             !  I/O manager
 
    IMPLICIT NONE
@@ -62 +63 @@
       INTEGER, INTENT(in) ::   kt ! ocean time step
       INTEGER  ::   ji, jj, jk, jn
-      REAL(wp) ::   zbot, zalk, zdic, zph, zremco3, zah2
-      REAL(wp) ::   zdispot, zfact, zalka
+      REAL(wp) ::   zalk, zdic, zph, zremco3, zah2
+      REAL(wp) ::   zdispot, zfact, zcalcon, zalka, zaldi
       REAL(wp) ::   zomegaca, zexcess, zexcess0
-#if defined key_diatrc && defined key_iomput
       REAL(wp) ::   zrfact2
-#endif
       CHARACTER (len=25) :: charout
       !!---------------------------------------------------------------------
@@ -91 +90 @@
 !CDIR NOVERRCHK
                DO ji = 1, jpi
-
-                  ! SET DUMMY VARIABLE FOR TOTAL BORATE
-                  zbot  = borat(ji,jj,jk)
-
-                  ! SET DUMMY VARIABLE FOR TOTAL BORATE
-                  zbot  = borat(ji,jj,jk)
-                  zfact = rhop (ji,jj,jk) / 1000. + rtrn
-
-                  ! SET DUMMY VARIABLE FOR [H+]
-                  zph   = hi(ji,jj,jk) * tmask(ji,jj,jk) / zfact + ( 1.-tmask(ji,jj,jk) ) * 1.e-9
-
-                  ! SET DUMMY VARIABLE FOR [SUM(CO2)]GIVEN 
+                  zfact = rhop(ji,jj,jk) / 1000. + rtrn
+                  zph  = hi(ji,jj,jk) * tmask(ji,jj,jk) / zfact + ( 1.-tmask(ji,jj,jk) ) * 1.e-9 ! [H+]
                   zdic  = trn(ji,jj,jk,jpdic) / zfact
                   zalka = trn(ji,jj,jk,jptal) / zfact
 
                   ! CALCULATE [ALK]([CO3--], [HCO3-])
-                  zalk  = zalka - (  akw3(ji,jj,jk) / zph - zph   &
-                     &             + zbot / (1.+ zph / akb3(ji,jj,jk) )  )
+                  zalk  = zalka - ( akw3(ji,jj,jk) / zph - zph + borat(ji,jj,jk) / ( 1. + zph / akb3(ji,jj,jk) ) )
 
                   ! CALCULATE [H+] and [CO3--]
-                  zah2 = SQRT( (zdic-zalk)*(zdic-zalk)+   &
-                     &     4.*(zalk*ak23(ji,jj,jk)/ak13(ji,jj,jk))   &
-                     &     *(2*zdic-zalk))
-
-                  zah2=0.5*ak13(ji,jj,jk)/zalk*((zdic-zalk)+zah2)
-                  zco3(ji,jj,jk) = zalk/(2.+zah2/ak23(ji,jj,jk))*zfact
-
-                  hi(ji,jj,jk)  = zah2*zfact
-
+                  zaldi = zdic - zalk
+                  zah2  = SQRT( zaldi * zaldi + 4.* ( zalk * ak23(ji,jj,jk) / ak13(ji,jj,jk) ) * ( zdic + zaldi ) )
+                  zah2  = 0.5 * ak13(ji,jj,jk) / zalk * ( zaldi + zah2 )
+                  !
+                  zco3(ji,jj,jk) = zalk / ( 2. + zah2 / ak23(ji,jj,jk) ) * zfact
+                  hi(ji,jj,jk)   = zah2 * zfact
                END DO
             END DO
@@ -137 +122 @@
 
                ! DEVIATION OF [CO3--] FROM SATURATION VALUE
-               zomegaca = ( calcon * zco3(ji,jj,jk) ) / aksp(ji,jj,jk)
+               ! Salinity dependance in zomegaca and divide by rhop/1000 to have good units
+               zcalcon  = calcon * ( tsn(ji,jj,jk,jp_sal) / 35._wp )
+               zfact    = rhop(ji,jj,jk) / 1000._wp
+               zomegaca = ( zcalcon * zco3(ji,jj,jk) * zfact ) / aksp(ji,jj,jk) 
 
                ! SET DEGREE OF UNDER-/SUPERSATURATION
-               zexcess0 = MAX( 0., ( 1.- zomegaca ) )
+               excess(ji,jj,jk) = 1._wp - zomegaca
+               zexcess0 = MAX( 0., excess(ji,jj,jk) )
                zexcess  = zexcess0**nca
 
@@ -166 +155 @@
          END DO
       END DO
-
+      !
 # if defined key_diatrc
-#  if ! defined key_iomput
-      trc3d(:,:,:,jp_pcs0_3d    ) = hi  (:,:,:)          * tmask(:,:,:)
-      trc3d(:,:,:,jp_pcs0_3d + 1) = zco3(:,:,:)          * tmask(:,:,:)
-      trc3d(:,:,:,jp_pcs0_3d + 2) = aksp(:,:,:) / calcon * tmask(:,:,:)
-#  else
-      zrfact2 = 1.e3 * rfact2r
-      CALL iom_put( "PH"    , hi      (:,:,:)           * tmask(:,:,:) )
-      CALL iom_put( "CO3"   , zco3    (:,:,:)           * tmask(:,:,:) )
-      CALL iom_put( "CO3sat", aksp    (:,:,:) / calcon  * tmask(:,:,:) )
-      CALL iom_put( "DCAL"  , zcaldiss(:,:,:) * zrfact2 * tmask(:,:,:) )
-#  endif
-# endif
+#  if defined key_iomput
+       zrfact2 = 1.e3 * rfact2r
+       CALL iom_put( "PH"    , hi      (:,:,:)           * tmask(:,:,:) )
+       CALL iom_put( "CO3"   , zco3    (:,:,:)           * tmask(:,:,:) )
+       CALL iom_put( "CO3sat", aksp    (:,:,:) / calcon  * tmask(:,:,:) )
+       CALL iom_put( "DCAL"  , zcaldiss(:,:,:) * zrfact2 * tmask(:,:,:) )
+#else
+       trc3d(:,:,:,jp_pcs0_3d    ) = hi  (:,:,:)          * tmask(:,:,:)
+       trc3d(:,:,:,jp_pcs0_3d + 1) = zco3(:,:,:)          * tmask(:,:,:)
+       trc3d(:,:,:,jp_pcs0_3d + 2) = aksp(:,:,:) / calcon * tmask(:,:,:)
+#endif
+#endif
       !
        IF(ln_ctl)   THEN  ! print mean trends (used for debugging)
@@ -207 +196 @@
       NAMELIST/nampiscal/ kdca, nca
 
-      REWIND( numnat )                     ! read numnat
-      READ  ( numnat, nampiscal )
+      REWIND( numnatp )                     ! read numnatp
+      READ  ( numnatp, nampiscal )
 
       IF(lwp) THEN                         ! control print