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contains |
contains |
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SUBROUTINE soil(ptimestep, indice, knon, snow, ptsrf, ptsoil, pcapcal, & |
SUBROUTINE soil(dtime, nisurf, knon, snow, tsurf, tsoil, soilcap, soilflux) |
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pfluxgrd) |
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! From LMDZ4/libf/phylmd/soil.F, version 1.1.1.1 2004/05/19 |
! From LMDZ4/libf/phylmd/soil.F, version 1.1.1.1 2004/05/19 |
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USE dimens_m |
! Author: Frederic Hourdin 30/01/92 |
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USE indicesol |
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USE dimphy |
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USE dimsoil |
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USE suphec_m |
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! ======================================================================= |
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! Auteur: Frederic Hourdin 30/01/92 |
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! ------- |
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! objet: computation of : the soil temperature evolution |
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! ------ the surfacic heat capacity "Capcal" |
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! the surface conduction flux pcapcal |
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! Object: computation of the soil temperature evolution, the |
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! surfacic heat capacity "Soilcap" and the surface conduction flux |
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! Method: implicit time integration |
! Method: implicit time integration |
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! ------- |
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! Consecutive ground temperatures are related by: |
! Consecutive ground temperatures are related by: |
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! T(k+1) = C(k) + D(k)*T(k) (1) |
! T(k+1) = C(k) + D(k)*T(k) (1) |
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! the coefficients C and D are computed at the t-dt time-step. |
! the coefficients C and D are computed at the t-dt time-step. |
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! Routine structure: |
! Routine structure: |
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! 1)new temperatures are computed using (1) |
! 1) new temperatures are computed using (1) |
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! 2)C and D coefficients are computed from the new temperature |
! 2) C and D coefficients are computed from the new temperature |
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! profile for the t+dt time-step |
! profile for the t+dt time-step |
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! 3)the coefficients A and B are computed where the diffusive |
! 3) the coefficients A and B are computed where the diffusive |
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! fluxes at the t+dt time-step is given by |
! fluxes at the t+dt time-step is given by |
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! Fdiff = A + B Ts(t+dt) |
! Fdiff = A + B Ts(t+dt) |
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! or Fdiff = F0 + Capcal (Ts(t+dt)-Ts(t))/dt |
! or Fdiff = F0 + Soilcap (Ts(t+dt)-Ts(t))/dt |
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! with F0 = A + B (Ts(t)) |
! with F0 = A + B (Ts(t)) |
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! Capcal = B*dt |
! Soilcap = B*dt |
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USE dimens_m, only: |
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USE indicesol |
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USE dimphy |
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USE dimsoil |
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USE suphec_m |
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! Interface: |
! Interface: |
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! ---------- |
! ---------- |
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! Arguments: |
! Arguments: |
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! ---------- |
! ---------- |
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! ptimestep physical timestep (s) |
! dtime physical timestep (s) |
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! indice sub-surface index |
! indice sub-surface index |
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! snow(klon,nbsrf) snow |
! snow(klon, nbsrf) snow |
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! ptsrf(klon) surface temperature at time-step t (K) |
! tsurf(knon) surface temperature at time-step t (K) |
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! ptsoil(klon,nsoilmx) temperature inside the ground (K) |
! tsoil(klon, nsoilmx) temperature inside the ground (K) |
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! pcapcal(klon) surfacic specific heat (W*m-2*s*K-1) |
! soilcap(klon) surfacic specific heat (W*m-2*s*K-1) |
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! pfluxgrd(klon) surface diffusive flux from ground (Wm-2) |
! soilflux(klon) surface diffusive flux from ground (Wm-2) |
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! ======================================================================= |
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! declarations: |
! declarations: |
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! ------------- |
! ------------- |
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! ----------------------------------------------------------------------- |
! ----------------------------------------------------------------------- |
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! arguments |
! arguments |
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! --------- |
! --------- |
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REAL ptimestep |
REAL dtime |
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INTEGER indice, knon |
INTEGER nisurf, knon |
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REAL ptsrf(klon), ptsoil(klon, nsoilmx), snow(klon) |
REAL tsurf(knon), tsoil(klon, nsoilmx), snow(klon) |
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REAL pcapcal(klon), pfluxgrd(klon) |
REAL soilcap(klon), soilflux(klon) |
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! ----------------------------------------------------------------------- |
! ----------------------------------------------------------------------- |
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! local arrays |
! local arrays |
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! ------------ |
! ------------ |
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INTEGER ig, jk |
INTEGER ig, jk |
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! $$$ REAL zdz2(nsoilmx),z1(klon) |
! $$$ REAL zdz2(nsoilmx), z1(klon) |
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REAL zdz2(nsoilmx), z1(klon, nbsrf) |
REAL zdz2(nsoilmx), z1(klon, nbsrf) |
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REAL min_period, dalph_soil |
REAL min_period, dalph_soil |
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REAL ztherm_i(klon) |
REAL ztherm_i(klon) |
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! local saved variables: |
! local saved variables: |
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! ---------------------- |
! ---------------------- |
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REAL dz1(nsoilmx), dz2(nsoilmx) |
REAL dz1(nsoilmx), dz2(nsoilmx) |
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! $$$ REAL zc(klon,nsoilmx),zd(klon,nsoilmx) |
! $$$ REAL zc(klon, nsoilmx), zd(klon, nsoilmx) |
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REAL zc(klon, nsoilmx, nbsrf), zd(klon, nsoilmx, nbsrf) |
REAL zc(klon, nsoilmx, nbsrf), zd(klon, nsoilmx, nbsrf) |
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REAL lambda |
REAL lambda |
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SAVE dz1, dz2, zc, zd, lambda |
SAVE dz1, dz2, zc, zd, lambda |
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LOGICAL firstcall, firstsurf(nbsrf) |
LOGICAL firstsurf(nbsrf) |
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SAVE firstcall, firstsurf |
SAVE firstsurf |
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REAL isol, isno, iice |
REAL isol, isno, iice |
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SAVE isol, isno, iice |
SAVE isol, isno, iice |
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DATA firstcall/.TRUE./ |
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DATA firstsurf/.TRUE., .TRUE., .TRUE., .TRUE./ |
DATA firstsurf/.TRUE., .TRUE., .TRUE., .TRUE./ |
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DATA isol, isno, iice/2000., 2000., 2000./ |
DATA isol, isno, iice/2000., 2000., 2000./ |
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! Depthts: |
! Depthts: |
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! -------- |
! -------- |
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REAL fz, rk, fz1, rk1, rk2 |
REAL rk, fz1, rk1, rk2 |
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fz(rk) = fz1*(dalph_soil**rk-1.)/(dalph_soil-1.) |
soilflux(:) = 0. |
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pfluxgrd(:) = 0. |
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! calcul de l'inertie thermique a partir de la variable rnat. |
! calcul de l'inertie thermique a partir de la variable rnat. |
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! on initialise a iice meme au-dessus d'un point de mer au cas |
! on initialise a iice meme au-dessus d'un point de mer au cas |
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! ou le point de mer devienne point de glace au pas suivant |
! ou le point de mer devienne point de glace au pas suivant |
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! on corrige si on a un point de terre avec ou sans glace |
! on corrige si on a un point de terre avec ou sans glace |
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IF (indice==is_sic) THEN |
IF (nisurf==is_sic) THEN |
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DO ig = 1, knon |
DO ig = 1, knon |
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ztherm_i(ig) = iice |
ztherm_i(ig) = iice |
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IF (snow(ig)>0.0) ztherm_i(ig) = isno |
IF (snow(ig)>0.0) ztherm_i(ig) = isno |
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END DO |
END DO |
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ELSE IF (indice==is_lic) THEN |
ELSE IF (nisurf==is_lic) THEN |
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DO ig = 1, knon |
DO ig = 1, knon |
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ztherm_i(ig) = iice |
ztherm_i(ig) = iice |
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IF (snow(ig)>0.0) ztherm_i(ig) = isno |
IF (snow(ig)>0.0) ztherm_i(ig) = isno |
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END DO |
END DO |
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ELSE IF (indice==is_ter) THEN |
ELSE IF (nisurf==is_ter) THEN |
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DO ig = 1, knon |
DO ig = 1, knon |
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ztherm_i(ig) = isol |
ztherm_i(ig) = isol |
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IF (snow(ig)>0.0) ztherm_i(ig) = isno |
IF (snow(ig)>0.0) ztherm_i(ig) = isno |
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END DO |
END DO |
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ELSE IF (indice==is_oce) THEN |
ELSE IF (nisurf==is_oce) THEN |
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DO ig = 1, knon |
DO ig = 1, knon |
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ztherm_i(ig) = iice |
ztherm_i(ig) = iice |
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END DO |
END DO |
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ELSE |
ELSE |
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PRINT *, 'valeur d indice non prevue', indice |
PRINT *, 'valeur d indice non prevue', nisurf |
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STOP 1 |
STOP 1 |
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END IF |
END IF |
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IF (firstsurf(nisurf)) THEN |
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! $$$ IF (firstcall) THEN |
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IF (firstsurf(indice)) THEN |
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! ----------------------------------------------------------------------- |
! ----------------------------------------------------------------------- |
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! ground levels |
! ground levels |
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READ (99, *) min_period |
READ (99, *) min_period |
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READ (99, *) dalph_soil |
READ (99, *) dalph_soil |
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PRINT *, 'Discretization for the soil model' |
PRINT *, 'Discretization for the soil model' |
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PRINT *, 'First level e-folding depth', min_period, ' dalph', & |
PRINT *, 'First level e-folding depth', min_period, ' dalph', & |
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dalph_soil |
dalph_soil |
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CLOSE (99) |
CLOSE (99) |
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9999 CONTINUE |
9999 CONTINUE |
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PRINT *, 'fz=', fz(rk1)*fz(rk2)*3.14, fz(rk)*fz(rk)*3.14 |
PRINT *, 'fz=', fz(rk1)*fz(rk2)*3.14, fz(rk)*fz(rk)*3.14 |
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END DO |
END DO |
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! PB |
! PB |
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firstsurf(indice) = .FALSE. |
firstsurf(nisurf) = .FALSE. |
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! $$$ firstcall =.false. |
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! Initialisations: |
! Initialisations: |
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! ---------------- |
! ---------------- |
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ELSE !--not firstcall |
ELSE |
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! ----------------------------------------------------------------------- |
! ----------------------------------------------------------------------- |
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! Computation of the soil temperatures using the Cgrd and Dgrd |
! Computation of the soil temperatures using the Cgrd and Dgrd |
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! coefficient computed at the previous time-step: |
! coefficient computed at the previous time-step: |
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! surface temperature |
! surface temperature |
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DO ig = 1, knon |
DO ig = 1, knon |
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ptsoil(ig, 1) = (lambda*zc(ig,1,indice)+ptsrf(ig))/(lambda*(1.-zd(ig,1, & |
tsoil(ig, 1) = (lambda*zc(ig, 1, nisurf)+tsurf(ig))/(lambda*(1.-zd(ig, 1, & |
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indice))+1.) |
nisurf))+1.) |
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END DO |
END DO |
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! other temperatures |
! other temperatures |
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DO jk = 1, nsoilmx - 1 |
DO jk = 1, nsoilmx - 1 |
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DO ig = 1, knon |
DO ig = 1, knon |
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ptsoil(ig, jk+1) = zc(ig, jk, indice) + zd(ig, jk, indice)*ptsoil(ig, & |
tsoil(ig, jk+1) = zc(ig, jk, nisurf) + zd(ig, jk, nisurf)*tsoil(ig, & |
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jk) |
jk) |
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END DO |
END DO |
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END DO |
END DO |
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END IF !--not firstcall |
END IF |
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! ----------------------------------------------------------------------- |
! ----------------------------------------------------------------------- |
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! Computation of the Cgrd and Dgrd coefficient for the next step: |
! Computation of the Cgrd and Dgrd coefficient for the next step: |
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! --------------------------------------------------------------- |
! --------------------------------------------------------------- |
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! $$$ PB ajout pour cas glace de mer |
! $$$ PB ajout pour cas glace de mer |
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IF (indice==is_sic) THEN |
IF (nisurf==is_sic) THEN |
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DO ig = 1, knon |
DO ig = 1, knon |
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ptsoil(ig, nsoilmx) = rtt - 1.8 |
tsoil(ig, nsoilmx) = rtt - 1.8 |
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END DO |
END DO |
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END IF |
END IF |
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DO jk = 1, nsoilmx |
DO jk = 1, nsoilmx |
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zdz2(jk) = dz2(jk)/ptimestep |
zdz2(jk) = dz2(jk)/dtime |
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END DO |
END DO |
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DO ig = 1, knon |
DO ig = 1, knon |
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z1(ig, indice) = zdz2(nsoilmx) + dz1(nsoilmx-1) |
z1(ig, nisurf) = zdz2(nsoilmx) + dz1(nsoilmx-1) |
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zc(ig, nsoilmx-1, indice) = zdz2(nsoilmx)*ptsoil(ig, nsoilmx)/ & |
zc(ig, nsoilmx-1, nisurf) = zdz2(nsoilmx)*tsoil(ig, nsoilmx)/ & |
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z1(ig, indice) |
z1(ig, nisurf) |
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zd(ig, nsoilmx-1, indice) = dz1(nsoilmx-1)/z1(ig, indice) |
zd(ig, nsoilmx-1, nisurf) = dz1(nsoilmx-1)/z1(ig, nisurf) |
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END DO |
END DO |
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DO jk = nsoilmx - 1, 2, -1 |
DO jk = nsoilmx - 1, 2, -1 |
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DO ig = 1, knon |
DO ig = 1, knon |
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z1(ig, indice) = 1./(zdz2(jk)+dz1(jk-1)+dz1(jk)*(1.-zd(ig,jk,indice))) |
z1(ig, nisurf) = 1./(zdz2(jk)+dz1(jk-1)+dz1(jk)*(1.-zd(ig, jk, nisurf))) |
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zc(ig, jk-1, indice) = (ptsoil(ig,jk)*zdz2(jk)+dz1(jk)*zc(ig,jk,indice) & |
zc(ig, jk-1, nisurf) = (tsoil(ig, jk)*zdz2(jk)+dz1(jk)*zc(ig, jk, nisurf) & |
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)*z1(ig, indice) |
)*z1(ig, nisurf) |
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zd(ig, jk-1, indice) = dz1(jk-1)*z1(ig, indice) |
zd(ig, jk-1, nisurf) = dz1(jk-1)*z1(ig, nisurf) |
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END DO |
END DO |
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END DO |
END DO |
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! --------------------------------- |
! --------------------------------- |
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DO ig = 1, knon |
DO ig = 1, knon |
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pfluxgrd(ig) = ztherm_i(ig)*dz1(1)*(zc(ig,1,indice)+(zd(ig,1, & |
soilflux(ig) = ztherm_i(ig)*dz1(1)*(zc(ig, 1, nisurf)+(zd(ig, 1, & |
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indice)-1.)*ptsoil(ig,1)) |
nisurf)-1.)*tsoil(ig, 1)) |
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pcapcal(ig) = ztherm_i(ig)*(dz2(1)+ptimestep*(1.-zd(ig,1,indice))*dz1(1)) |
soilcap(ig) = ztherm_i(ig)*(dz2(1)+dtime*(1.-zd(ig, 1, nisurf))*dz1(1)) |
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z1(ig, indice) = lambda*(1.-zd(ig,1,indice)) + 1. |
z1(ig, nisurf) = lambda*(1.-zd(ig, 1, nisurf)) + 1. |
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pcapcal(ig) = pcapcal(ig)/z1(ig, indice) |
soilcap(ig) = soilcap(ig)/z1(ig, nisurf) |
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pfluxgrd(ig) = pfluxgrd(ig) + pcapcal(ig)*(ptsoil(ig,1)*z1(ig,indice)- & |
soilflux(ig) = soilflux(ig) + soilcap(ig)*(tsoil(ig, 1)*z1(ig, nisurf)- & |
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lambda*zc(ig,1,indice)-ptsrf(ig))/ptimestep |
lambda*zc(ig, 1, nisurf)-tsurf(ig))/dtime |
236 |
END DO |
END DO |
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contains |
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real function fz(rk) |
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real rk |
242 |
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fz = fz1*(dalph_soil**rk-1.)/(dalph_soil-1.) |
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end function fz |
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END SUBROUTINE soil |
END SUBROUTINE soil |
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end module soil_m |
end module soil_m |