Changeset 463 for trunk/LMDZ.MARS/libf/aeronomars

Timestamp:

Dec 9, 2011, 8:52:27 AM (13 years ago)

Author:

emillour

Message:

Mars GCM: more updates for photochemistry from FL: improved aeronomars/surfacearea.F, along with a change in arguments.
EM

File:

• trunk/LMDZ.MARS/libf/aeronomars/surfacearea.F (modified) (5 diffs)

trunk/LMDZ.MARS/libf/aeronomars/surfacearea.F

@@ -1 @@
-      subroutine surfacearea(ngrid, nlay, pplay, pzlay, pt, pq, nq,
-     $                       rdust, rice, tau, tauscaling,
+      subroutine surfacearea(ngrid, nlay, ptimestep,
+     $                       pplay, pzlay, 
+     $                       pt, pq, pdq, nq, rdust, rice, tau, 
+     $                       tauscaling,
      $                       surfdust, surfice)
 
@@ -10 +12 @@
 !
 !     Franck Lefevre
-!     version 1.0 november 2011
+!     version 1.1 november 2011
 !==========================================================================
 
@@ -24 +26 @@
 ! input
 
-      integer ngrid, nlay
-      integer nq                   ! number of tracers
-      real pplay(ngrid,nlay)       ! pressure at mid-layers (Pa)
-      real pzlay(ngrid,nlay)       ! altitude at mid-layers (m)
-      real pt(ngrid,nlay)          ! temperature at mid-layers (K)
-      real pq(ngrid,nlay,nq)       ! tracers (kg/kg)
-      real rdust(ngrid,nlay)       ! dust geometric mean radius (m)
-      real rice(ngrid,nlay)        ! ice mass mean radius (m)
-      real tau(ngrid,naerkind)     ! column dust optical depth at each point
-      real tauscaling(ngrid)       ! conversion factor for dust amount
+      integer,intent(in) :: ngrid, nlay
+      integer,intent(in) :: nq               ! number of tracers
+      real,intent(in) :: ptimestep           ! physics time step (s)
+      real,intent(in) :: pplay(ngrid,nlay)   ! pressure at mid-layers (Pa)
+      real,intent(in) :: pzlay(ngrid,nlay)   ! altitude at mid-layers (m)
+      real,intent(in) :: pt(ngrid,nlay)      ! temperature at mid-layers (K)
+      real,intent(in) :: pq(ngrid,nlay,nq)   ! tracers (kg/kg)
+      real,intent(in) :: pdq(ngrid,nlay,nq)  ! physical tendency (kg/kg.s-1)
+      real,intent(in) :: rdust(ngrid,nlay)   ! dust geometric mean radius (m)
+      real,intent(in) :: rice(ngrid,nlay)    ! ice mass mean radius (m)
+      real,intent(in) :: tau(ngrid,naerkind) ! column dust optical depth at each point
+      real,intent(in) :: tauscaling(ngrid)   ! conversion factor for dust amount
 
 ! output
 
-      real surfdust(ngrid,nlay)    ! dust surface area (m2/m3)
-      real surfice(ngrid,nlay)     ! water-ice surface area (m2/m3)
+      real,intent(out) :: surfdust(ngrid,nlay) ! dust surface area (m2/m3)
+      real,intent(out) :: surfice(ngrid,nlay)  ! water-ice surface area (m2/m3)
 
 ! local
@@ -44 +48 @@
       integer l, ig
       real rho                     ! density (kg/m3)
+      real dustnd                  ! uodated dust number density (kg/kg)
+      real icend                   ! uodated ice number density (kg/kg)
       real ccntyp                  ! typical dust number density (#/kg)
                                    ! (microphys = false)
@@ -54 +60 @@
          do l = 1,nlay
             do ig = 1,ngrid
+!              atmospheric density
                rho = pplay(ig,l)/(rnew(ig,l)*pt(ig,l))
-               surfdust(ig,l) = pq(ig,l,igcm_dust_number)*rho
-     $                          *tauscaling(ig)
+!              updated dust number density
+               dustnd = pq(ig,l,igcm_dust_number)
+     $                + pdq(ig,l,igcm_dust_number)*ptimestep
+!              updated ice number density
+               icend  = pq(ig,l,igcm_ccn_number)
+     $                + pdq(ig,l,igcm_ccn_number)*ptimestep
+!              dust surface area
+               surfdust(ig,l) = dustnd*rho*tauscaling(ig)
      $                          *4.*pi*rdust(ig,l)**2
-               surfice(ig,l)  = pq(ig,l,igcm_ccn_number)*rho
-     $                          *tauscaling(ig)
+!              ice surface area
+               surfice(ig,l)  = icend*rho*tauscaling(ig)
      $                          *4.*pi*rice(ig,l)**2
             end do
          end do
-      else            ! simpleclouds
+      else               ! simpleclouds
          do l = 1,nlay
             do ig = 1,ngrid
+!              atmospheric density
                rho = pplay(ig,l)/(rnew(ig,l)*pt(ig,l))
+!              typical dust radius
                rdusttyp = max(.8e-6*exp(-pzlay(ig,l)/18000.),1.e-9)
+!              typical dust number density
                ccntyp = 1.3e+8*max(tau(ig,1),0.001)/0.1
      $                  *exp(-pzlay(ig,l)/10000.)