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jmc |
1.7 |
C $Header: /u/gcmpack/MITgcm/verification/aim.5l_Equatorial_Channel/code/aim_surf_bc.F,v 1.6 2009/01/27 15:38:07 jmc Exp $ |
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jmc |
1.1 |
C $Name: $ |
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#include "AIM_OPTIONS.h" |
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jmc |
1.5 |
SUBROUTINE AIM_SURF_BC( |
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U tYear, |
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O aim_sWght0, aim_sWght1, |
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I bi, bj, myTime, myIter, myThid ) |
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jmc |
1.1 |
C *================================================================* |
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C | S/R AIM_SURF_BC |
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jmc |
1.5 |
C | Set surface Boundary Conditions |
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jmc |
1.1 |
C | for the atmospheric physics package |
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C *================================================================* |
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c | was part of S/R FORDATE in Franco Molteni SPEEDY code (ver23). |
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C | For now, surface BC are loaded from files (S/R AIM_FIELDS_LOAD) |
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C | and imposed (= surf. forcing). |
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jmc |
1.5 |
C | In the future, will add |
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jmc |
1.1 |
C | a land model and a coupling interface with an ocean GCM |
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C *================================================================* |
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IMPLICIT NONE |
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C -------------- Global variables -------------- |
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C-- size for MITgcm & Physics package : |
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#include "AIM_SIZE.h" |
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C-- MITgcm |
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#include "EEPARAMS.h" |
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#include "PARAMS.h" |
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c #include "DYNVARS.h" |
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#include "GRID.h" |
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c #include "SURFACE.h" |
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C-- Physics package |
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#include "AIM_PARAMS.h" |
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#include "AIM_FFIELDS.h" |
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c #include "AIM_GRID.h" |
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#include "com_forcon.h" |
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#include "com_forcing.h" |
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c #include "com_physvar.h" |
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C-- Coupled to the Ocean : |
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#ifdef COMPONENT_MODULE |
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#include "CPL_PARAMS.h" |
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#include "ATMCPL.h" |
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#endif |
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C == Routine arguments == |
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jmc |
1.5 |
C tYear :: Fraction into year |
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C aim_sWght0 :: weight for time interpolation of surface BC |
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C aim_sWght1 :: 0/1 = time period before/after the current time |
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C bi,bj :: Tile indices |
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C myTime :: Current time of simulation ( s ) |
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C myIter :: Current iteration number in simulation |
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C myThid :: my Thread number Id. |
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_RL tYear |
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_RL aim_sWght0, aim_sWght1 |
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INTEGER bi, bj |
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_RL myTime |
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INTEGER myIter, myThid |
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jmc |
1.1 |
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#ifdef ALLOW_AIM |
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C == Local variables == |
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1.5 |
C i,j,k,I2,k :: Loop counters |
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INTEGER i,j,I2,k, nm0 |
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_RL t0prd, tNcyc, tmprd, dTprd |
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jmc |
1.1 |
_RL SDEP1, IDEP2, SDEP2, SWWIL2, RSW, soilw_0, soilw_1 |
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jmc |
1.4 |
_RL RSD, alb_land, oceTfreez |
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jmc |
1.2 |
c _RL DALB, alb_sea |
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jmc |
1.1 |
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C_EqCh: start |
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CHARACTER*(MAX_LEN_MBUF) suff |
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_RL xBump, yBump, dxBump, dyBump |
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1.6 |
xBump = xgOrigin + delX(1)*64. |
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yBump = ygOrigin + delY(1)*11.5 |
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1.1 |
dxBump= delX(1)*12. |
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dyBump= delY(1)*6. |
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C_EqCh: Fix solar insolation with Sun directly overhead on Equator |
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tYear = 0.25 _d 0 - 10. _d 0/365. _d 0 |
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C_EqCh: end |
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jmc |
1.4 |
C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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C- Set Land-sea mask (in [0,1]) from aim_landFr to fMask1: |
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DO j=1,sNy |
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DO i=1,sNx |
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I2 = i+(j-1)*sNx |
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fMask1(I2,1,myThid) = aim_landFr(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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jmc |
1.1 |
IF (aim_useFMsurfBC) THEN |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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jmc |
1.5 |
C aim_surfForc_TimePeriod :: Length of forcing time period (e.g. 1 month) |
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C aim_surfForc_NppCycle :: Number of time period per Cycle (e.g. 12) |
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C aim_surfForc_TransRatio :: |
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C- define how fast the (linear) transition is from one month to the next |
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C = 1 -> linear between 2 midle month |
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C > TimePeriod/deltaT -> jump from one month to the next one |
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C-- Calculate weight for linear interpolation between 2 month centers |
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t0prd = myTime / aim_surfForc_TimePeriod |
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tNcyc = aim_surfForc_NppCycle |
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tmprd = t0prd - 0.5 _d 0 + tNcyc |
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tmprd = MOD(tmprd,tNcyc) |
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C- indices of previous month (nm0) and next month (nm1): |
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nm0 = 1 + INT(tmprd) |
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c nm1 = 1 + MOD(nm0,aim_surfForc_NppCycle) |
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C- interpolation weight: |
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dTprd = tmprd - (nm0 - 1) |
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aim_sWght1 = 0.5 _d 0+(dTprd-0.5 _d 0)*aim_surfForc_TransRatio |
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aim_sWght1 = MAX( 0. _d 0, MIN(1. _d 0, aim_sWght1) ) |
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aim_sWght0 = 1. _d 0 - aim_sWght1 |
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jmc |
1.1 |
C-- Compute surface forcing at present time (linear Interp in time) |
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C using F.Molteni surface BC form ; fields needed are: |
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jmc |
1.4 |
C 1. Sea Surface temperatures (in situ Temp. [K]) |
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C 2. Land Surface temperatures (in situ Temp. [K]) |
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C 3. Soil moisture (between 0-1) |
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C 4. Snow depth, Sea Ice : used to compute albedo (=> local arrays) |
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C 5. Albedo (between 0-1) |
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jmc |
1.1 |
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jmc |
1.5 |
C- Surface Temperature: |
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jmc |
1.1 |
DO j=1,sNy |
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DO i=1,sNx |
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I2 = i+(j-1)*sNx |
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jmc |
1.5 |
sst1(I2,myThid) = aim_sWght0*aim_sst0(i,j,bi,bj) |
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jmc |
1.1 |
& + aim_sWght1*aim_sst1(i,j,bi,bj) |
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stl1(I2,myThid) = aim_sWght0*aim_lst0(i,j,bi,bj) |
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& + aim_sWght1*aim_lst1(i,j,bi,bj) |
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ENDDO |
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ENDDO |
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C- Soil Water availability : (from F.M. INFORC S/R) |
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SDEP1 = 70. _d 0 |
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IDEP2 = 3. _d 0 |
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SDEP2 = IDEP2*SDEP1 |
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SWWIL2= SDEP2*SWWIL |
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RSW = 1. _d 0/(SDEP1*SWCAP+SDEP2*(SWCAP-SWWIL)) |
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jmc |
1.5 |
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jmc |
1.1 |
DO j=1,sNy |
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DO i=1,sNx |
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I2 = i+(j-1)*sNx |
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jmc |
1.5 |
soilw_0 = ( aim_sw10(i,j,bi,bj) |
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jmc |
1.1 |
& +aim_veget(i,j,bi,bj)* |
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& MAX(IDEP2*aim_sw20(i,j,bi,bj)-SWWIL2, 0. _d 0) |
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jmc |
1.5 |
& )*RSW |
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soilw_1 = ( aim_sw11(i,j,bi,bj) |
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jmc |
1.1 |
& +aim_veget(i,j,bi,bj)* |
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& MAX(IDEP2*aim_sw21(i,j,bi,bj)-SWWIL2, 0. _d 0) |
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jmc |
1.5 |
& )*RSW |
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soilw1(I2,myThid) = aim_sWght0*soilw_0 |
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jmc |
1.1 |
& + aim_sWght1*soilw_1 |
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soilw1(I2,myThid) = MIN(1. _d 0, soilw1(I2,myThid) ) |
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ENDDO |
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ENDDO |
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C- Set snow depth & sea-ice fraction : |
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DO j=1,sNy |
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DO i=1,sNx |
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I2 = i+(j-1)*sNx |
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snow1(I2) = aim_sWght0*aim_snw0(i,j,bi,bj) |
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jmc |
1.5 |
& + aim_sWght1*aim_snw1(i,j,bi,bj) |
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jmc |
1.1 |
oice1(I2) = aim_sWght0*aim_oic0(i,j,bi,bj) |
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jmc |
1.5 |
& + aim_sWght1*aim_oic1(i,j,bi,bj) |
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jmc |
1.1 |
ENDDO |
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ENDDO |
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jmc |
1.2 |
IF (aim_splitSIOsFx) THEN |
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C- Split Ocean and Sea-Ice surf. temp. ; remove ice-fraction < 1 % |
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jmc |
1.4 |
c oceTfreez = tFreeze - 1.9 _d 0 |
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oceTfreez = celsius2K - 1.9 _d 0 |
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jmc |
1.2 |
DO J=1,NGP |
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jmc |
1.5 |
sti1(J,myThid) = sst1(J,myThid) |
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jmc |
1.2 |
IF ( oice1(J) .GT. 1. _d -2 ) THEN |
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jmc |
1.4 |
sst1(J,myThid) = MAX(sst1(J,myThid),oceTfreez) |
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jmc |
1.5 |
sti1(J,myThid) = sst1(J,myThid) |
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jmc |
1.2 |
& +(sti1(J,myThid)-sst1(J,myThid))/oice1(J) |
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ELSE |
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oice1(J) = 0. _d 0 |
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ENDIF |
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ENDDO |
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ELSE |
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DO J=1,NGP |
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jmc |
1.5 |
sti1(J,myThid) = sst1(J,myThid) |
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jmc |
1.2 |
ENDDO |
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ENDIF |
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jmc |
1.1 |
C- Surface Albedo : (from F.M. FORDATE S/R) |
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jmc |
1.2 |
c_FM DALB=ALBICE-ALBSEA |
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jmc |
1.1 |
RSD=1. _d 0/SDALB |
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DO j=1,sNy |
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DO i=1,sNx |
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c_FM SNOWC=MIN(1.,RSD*SNOW1(I,J)) |
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c_FM ALBL=ALB0(I,J)+MAX(ALBSN-ALB0(I,J),0.0)*SNOWC |
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c_FM ALBS=ALBSEA+DALB*OICE1(I,J) |
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c_FM ALB1(I,J)=FMASK1(I,J)*ALBL+FMASK0(I,J)*ALBS |
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I2 = i+(j-1)*sNx |
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alb_land = aim_albedo(i,j,bi,bj) |
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& + MAX( 0. _d 0, ALBSN-aim_albedo(i,j,bi,bj) ) |
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& *MIN( 1. _d 0, RSD*snow1(I2)) |
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jmc |
1.2 |
c alb_sea = ALBSEA + DALB*oice1(I2) |
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jmc |
1.5 |
c alb1(I2,0,myThid) = alb_sea |
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jmc |
1.2 |
c & + (alb_land - alb_sea)*fMask1(I2,1,myThid) |
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alb1(I2,1,myThid) = alb_land |
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alb1(I2,2,myThid) = ALBSEA |
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alb1(I2,3,myThid) = ALBICE |
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jmc |
1.1 |
ENDDO |
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ENDDO |
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C-- else aim_useFMsurfBC |
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ELSE |
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C---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
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jmc |
1.5 |
C- safer to initialise output argument aim_sWght0,1 |
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C even if they are not used when aim_useFMsurfBC=F |
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aim_sWght1 = 0. _d 0 |
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aim_sWght0 = 1. _d 0 |
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jmc |
1.1 |
C- Set surface forcing fields needed by atmos. physics package |
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C 1. Albedo (between 0-1) |
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C 2. Sea Surface temperatures (in situ Temp. [K]) |
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C 3. Land Surface temperatures (in situ Temp. [K]) |
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C 4. Soil moisture (between 0-1) |
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jmc |
1.5 |
C Snow depth, Sea Ice (<- no need for now) |
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jmc |
1.1 |
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C Set surface albedo data (in [0,1]) from aim_albedo to alb1 : |
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IF (aim_useMMsurfFc) THEN |
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DO j=1,sNy |
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DO i=1,sNx |
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I2 = i+(j-1)*sNx |
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jmc |
1.2 |
alb1(I2,1,myThid) = aim_albedo(i,j,bi,bj) |
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alb1(I2,2,myThid) = aim_albedo(i,j,bi,bj) |
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alb1(I2,3,myThid) = aim_albedo(i,j,bi,bj) |
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jmc |
1.1 |
ENDDO |
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ENDDO |
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ELSE |
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DO j=1,sNy |
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DO i=1,sNx |
| 241 |
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I2 = i+(j-1)*sNx |
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jmc |
1.2 |
alb1(I2,1,myThid) = 0. |
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alb1(I2,2,myThid) = 0. |
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alb1(I2,3,myThid) = 0. |
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jmc |
1.1 |
ENDDO |
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ENDDO |
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ENDIF |
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C Set surface temperature data from aim_S/LSurfTemp to sst1 & stl1 : |
| 249 |
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IF (aim_useMMsurfFc) THEN |
| 250 |
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DO j=1,sNy |
| 251 |
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DO i=1,sNx |
| 252 |
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I2 = i+(j-1)*sNx |
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jmc |
1.5 |
sst1(I2,myThid) = aim_sst0(i,j,bi,bj) |
| 254 |
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stl1(I2,myThid) = aim_sst0(i,j,bi,bj) |
| 255 |
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sti1(I2,myThid) = aim_sst0(i,j,bi,bj) |
| 256 |
jmc |
1.1 |
ENDDO |
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ENDDO |
| 258 |
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ELSE |
| 259 |
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DO j=1,sNy |
| 260 |
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DO i=1,sNx |
| 261 |
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I2 = i+(j-1)*sNx |
| 262 |
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sst1(I2,myThid) = 300. |
| 263 |
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stl1(I2,myThid) = 300. |
| 264 |
jmc |
1.2 |
sti1(I2,myThid) = 300. |
| 265 |
jmc |
1.1 |
C_EqCh: start |
| 266 |
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sst1(I2,myThid) = 280. |
| 267 |
jmc |
1.2 |
& +20. _d 0 *exp( -((xC(i,j,bi,bj)-xBump)/dxBump)**2 |
| 268 |
jmc |
1.1 |
& -((yC(i,j,bi,bj)-yBump)/dyBump)**2 ) |
| 269 |
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stl1(I2,myThid) = sst1(I2,myThid) |
| 270 |
jmc |
1.2 |
sti1(I2,myThid) = sst1(I2,myThid) |
| 271 |
jmc |
1.1 |
C_EqCh: end |
| 272 |
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ENDDO |
| 273 |
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ENDDO |
| 274 |
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C_EqCh: start |
| 275 |
jmc |
1.2 |
IF (myIter.EQ.nIter0) THEN |
| 276 |
jmc |
1.1 |
WRITE(suff,'(I10.10)') myIter |
| 277 |
jmc |
1.7 |
CALL AIM_WRITE_PHYS( 'aim_SST.', suff, 1,sst1, |
| 278 |
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& 1, bi, bj, 1, myIter, myThid ) |
| 279 |
jmc |
1.1 |
ENDIF |
| 280 |
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C_EqCh: end |
| 281 |
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ENDIF |
| 282 |
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| 283 |
jmc |
1.5 |
C- Set soil water availability (in [0,1]) from aim_sw10 to soilw1 : |
| 284 |
jmc |
1.1 |
IF (aim_useMMsurfFc) THEN |
| 285 |
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DO j=1,sNy |
| 286 |
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DO i=1,sNx |
| 287 |
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I2 = i+(j-1)*sNx |
| 288 |
jmc |
1.5 |
soilw1(I2,myThid) = aim_sw10(i,j,bi,bj) |
| 289 |
jmc |
1.1 |
ENDDO |
| 290 |
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ENDDO |
| 291 |
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ELSE |
| 292 |
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DO j=1,sNy |
| 293 |
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DO i=1,sNx |
| 294 |
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I2 = i+(j-1)*sNx |
| 295 |
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soilw1(I2,myThid) = 0. |
| 296 |
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|
ENDDO |
| 297 |
|
|
ENDDO |
| 298 |
|
|
ENDIF |
| 299 |
|
|
|
| 300 |
jmc |
1.5 |
C- Set Snow depth and Sea Ice |
| 301 |
jmc |
1.1 |
C (not needed here since albedo is loaded from file) |
| 302 |
jmc |
1.2 |
DO j=1,sNy |
| 303 |
|
|
DO i=1,sNx |
| 304 |
|
|
I2 = i+(j-1)*sNx |
| 305 |
|
|
oice1(I2) = 0. |
| 306 |
|
|
snow1(I2) = 0. |
| 307 |
|
|
ENDDO |
| 308 |
|
|
ENDDO |
| 309 |
jmc |
1.1 |
|
| 310 |
|
|
C-- endif/else aim_useFMsurfBC |
| 311 |
|
|
ENDIF |
| 312 |
|
|
|
| 313 |
|
|
#ifdef COMPONENT_MODULE |
| 314 |
|
|
IF ( useCoupler ) THEN |
| 315 |
jmc |
1.5 |
C-- take surface data from the ocean component |
| 316 |
jmc |
1.4 |
C to replace MxL fields (if use sea-ice) or directly AIM SST |
| 317 |
|
|
CALL ATM_APPLY_IMPORT( |
| 318 |
|
|
I aim_landFr, |
| 319 |
jmc |
1.5 |
U sst1(1,myThid), oice1, |
| 320 |
|
|
I myTime, myIter, bi, bj, myThid ) |
| 321 |
jmc |
1.1 |
ENDIF |
| 322 |
|
|
#endif /* COMPONENT_MODULE */ |
| 323 |
|
|
|
| 324 |
|
|
#ifdef ALLOW_LAND |
| 325 |
|
|
IF (useLand) THEN |
| 326 |
|
|
C- Use land model output instead of prescribed Temp & moisture |
| 327 |
jmc |
1.5 |
CALL AIM_LAND2AIM( |
| 328 |
jmc |
1.2 |
I aim_landFr, aim_veget, aim_albedo, snow1, |
| 329 |
jmc |
1.5 |
U stl1(1,myThid), soilw1(1,myThid), alb1(1,1,myThid), |
| 330 |
|
|
I myTime, myIter, bi, bj, myThid ) |
| 331 |
jmc |
1.1 |
ENDIF |
| 332 |
|
|
#endif /* ALLOW_LAND */ |
| 333 |
jmc |
1.2 |
|
| 334 |
jmc |
1.4 |
#ifdef ALLOW_THSICE |
| 335 |
|
|
IF (useThSIce) THEN |
| 336 |
|
|
C- Use thermo. sea-ice model output instead of prescribed Temp & albedo |
| 337 |
jmc |
1.5 |
CALL AIM_SICE2AIM( |
| 338 |
jmc |
1.4 |
I aim_landFr, |
| 339 |
jmc |
1.5 |
U sst1(1,myThid), oice1, |
| 340 |
|
|
O sti1(1,myThid), alb1(1,3,myThid), |
| 341 |
|
|
I myTime, myIter, bi, bj, myThid ) |
| 342 |
jmc |
1.4 |
ENDIF |
| 343 |
|
|
#endif /* ALLOW_THSICE */ |
| 344 |
|
|
|
| 345 |
jmc |
1.2 |
C-- set the sea-ice & open ocean fraction : |
| 346 |
|
|
DO J=1,NGP |
| 347 |
|
|
fMask1(J,3,myThid) =(1. _d 0 - fMask1(J,1,myThid)) |
| 348 |
|
|
& *oice1(J) |
| 349 |
jmc |
1.5 |
fMask1(J,2,myThid) = 1. _d 0 - fMask1(J,1,myThid) |
| 350 |
jmc |
1.2 |
& - fMask1(J,3,myThid) |
| 351 |
|
|
ENDDO |
| 352 |
|
|
|
| 353 |
|
|
C-- set the mean albedo : |
| 354 |
|
|
DO J=1,NGP |
| 355 |
|
|
alb1(J,0,myThid) = fMask1(J,1,myThid)*alb1(J,1,myThid) |
| 356 |
|
|
& + fMask1(J,2,myThid)*alb1(J,2,myThid) |
| 357 |
|
|
& + fMask1(J,3,myThid)*alb1(J,3,myThid) |
| 358 |
|
|
ENDDO |
| 359 |
|
|
|
| 360 |
jmc |
1.4 |
C-- initialize surf. temp. change to zero: |
| 361 |
|
|
DO k=1,3 |
| 362 |
|
|
DO J=1,NGP |
| 363 |
|
|
dTsurf(J,k,myThid) = 0. |
| 364 |
|
|
ENDDO |
| 365 |
|
|
ENDDO |
| 366 |
|
|
|
| 367 |
jmc |
1.2 |
IF (.NOT.aim_splitSIOsFx) THEN |
| 368 |
|
|
DO J=1,NGP |
| 369 |
|
|
fMask1(J,3,myThid) = 0. _d 0 |
| 370 |
jmc |
1.5 |
fMask1(J,2,myThid) = 1. _d 0 - fMask1(J,1,myThid) |
| 371 |
jmc |
1.2 |
ENDDO |
| 372 |
|
|
ENDIF |
| 373 |
jmc |
1.1 |
|
| 374 |
|
|
#endif /* ALLOW_AIM */ |
| 375 |
|
|
|
| 376 |
|
|
RETURN |
| 377 |
|
|
END |
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