! source file: /raid23/csomes/UVic/2.9/c_n_isotopes/last_glacial_experiments/dlgp15/updates/setmtlm.F subroutine setmtlm (is, ie, js, je) !----------------------------------------------------------------------- ! Initialize the land surface and vegetation model !----------------------------------------------------------------------- implicit none include "size.h" include "calendar.h" include "cembm.h" include "csbc.h" include "grdvar.h" include "coord.h" include "switch.h" include "levind.h" include "atm.h" include "veg.h" include "ice.h" include "tmngr.h" include "mtlm.h" include "mtlmc13.h" include "mtlmc14.h" include "mtlm_data.h" character(120) :: fname, new_file_name integer i, ie, iem1, is, isp1, iou, j, je, jem1, js, jsp1, k, L, n logical exists, inqvardef real LAI_BAL, epsln parameter (epsln=1.0e-20) data MAF / 1.0, 1.0, 0.95, 0.95, 0.97, 0.95 / isp1 = is+1 iem1 = ie-1 jsp1 = js+1 jem1 = je-1 atlnd = 1. !----------------------------------------------------------------------- ! Default parameters !----------------------------------------------------------------------- LHC = vlocn*1.e-4 LHF = flice*1.e-4 SIGMA = 5.67E-8 DAY_YEAR = yrlen SEC_DAY = daylen SEC_YEAR = DAY_YEAR*SEC_DAY STEP_DAY = INT(SEC_DAY/TIMESTEP) ! set longitude to half the STEP_DAY interval to line up with noon. ! longitude is set to a constant to treat all latitudes equally. LONG(:) = 360./STEP_DAY/2. LAND_COUNTER = 0 dtlnd = TIMESTEP !---------------------------------------------------------------------- ! Initialization of arrays !---------------------------------------------------------------------- PSTAR(:) = 1.e5 DTEMP_DAY(:) = 0. LYING_SNOW(:) = 0. TSTAR(:,:) = 280. TSOIL(:) = 280.0 TS1(:) = 280.0 CS(:) = 10.0 M(:) = 242. MNEG(:) = 0. FSMC(:) = 1.0 RESP_S_DR(:) = 0.0 ALBSOIL(:) = 0.3 ALBSNOW(:) = 0.6 Z0S(:) = 0.0003 FRACA(:) = 0.0 FRAC(:,:) = 0.1 LAI(:,1:2) = 6. LAI(:,3:5) = 2. HT(:,1:2) = 21.46 HT(:,3:4) = 0.794 HT(:,5) = 1.587 NPP_DR(:,:) = 0.0 G_LEAF_DR(:,:) = 0.0 RESP_W_DR(:,:) = 0.0 !----------------------------------------------------------------------- ! Define externally dependent arrays !----------------------------------------------------------------------- L = 0 do j=jsp1,jem1 do i=isp1,iem1 if (kmt(i,j) .le. klmax) then L = L + 1 GAREA(L) = dxt(i)*dyt(j)*cst(j)*1e-4 FRACA(L) = agric(i,j,2) LAT(L) = tlat(i,j) sbc(i,j,isca) = 1. - ALBSOIL(L) sbc(i,j,ievap) = 0. sbc(i,j,isens) = 0. sbc(i,j,ilwr) = 0. endif enddo enddo if (L .gt. POINTS) then print*, "==> Error: Number of land points is inconsistent" print*, "==> set POINTS in size.h to: ", L stop endif !---------------------------------------------------------------------- ! Initialize the non-vegetation fractions !---------------------------------------------------------------------- FRAC(:,SOIL) = 1.0 do N=1,NPFT FRAC(:,SOIL) = FRAC(:,SOIL) - FRAC(:,N) enddo !---------------------------------------------------------------------- ! Initialize the vegetation carbon contents !---------------------------------------------------------------------- CV(:) = 0. G_LEAF_PHEN(:,:) = 0.0 do N=1,NPFT LAI_BAL = (A_WS(N)*ETA_SL(N)*HT(1,N)/A_WL(N)) & **(1.0/(B_WL(N)-1)) C_VEG(:,N) = 2*SIGL(N)*LAI_BAL & + A_WS(N)*ETA_SL(N)*HT(:,N)*LAI_BAL CV(:) = CV(:) + C_VEG(:,N)*FRAC(:,N) enddo !---------------------------------------------------------------------- ! Derive vegetation parameters from the areal fractions and the ! structural properties. !---------------------------------------------------------------------- L = 0 LAND_INDEX(:) = 0 do j=jsp1,jem1 do i=isp1,iem1 if (kmt(i,j) .le. klmax) then L = L + 1 LAND_INDEX(L) = L endif enddo enddo do N=1,NPFT call PFT_SPARM (L, LAND_INDEX, N, ALBSOIL, HT(1,N), LAI(1,N) &, ALBSNC(1,N), ALBSNF(1,N), CATCH(1,N), Z0(1,N)) enddo !---------------------------------------------------------------------- ! Define other vegetation parameters !---------------------------------------------------------------------- VEG_FRAC(:) = 0.0 do N=1,NPFT VEG_FRAC(:) = VEG_FRAC(:) + FRAC(:,N) enddo FRAC_VS(:) = VEG_FRAC(:) + FRAC(:,SOIL) !---------------------------------------------------------------------- ! Reading a restart file !---------------------------------------------------------------------- if (.not. init) then fname = new_file_name ('restart_mtlm.nc') inquire (file=trim(fname), exist=exists) if (exists) call mtlm_rest_in (fname, is, ie, js, je) endif do N=1,NPFT if (C3(N).eq.1) then ac13npp(N) = 0.979 else ac13npp(N) = 0.993 endif c ac13npp(N) = 1. enddo print*, "ac13npp:", ac13npp(:) if (BF.ne.0.) then print*, "Error in setmtlm:" print*, "if O_mtlm_carbon_13 option is used BF must be zero" stop endif do N=1,NPFT if (C3(N).eq.1) then ac14npp(N) = 0.958 else ac14npp(N) = 0.986 endif c ac14npp(N) = 1. enddo print*, "ac14npp:", ac14npp(:) if (BF.ne.0.) then print*, "Error in setmtlm:" print*, "if O_mtlm_carbon_14 option is used BF must be zero" stop endif !---------------------------------------------------------------------- ! Create the VEG_INDEX array of land points with each type !---------------------------------------------------------------------- L = 0 land_map(:,:) = 0 LAND_PTS = 0 LAND_INDEX(:) = 0 do j=jsp1,jem1 do i=isp1,iem1 if (kmt(i,j) .le. klmax) then L = L + 1 if (aicel(i,j,2) .lt. 0.5 .and. tmsk(i,j) .lt. 0.5) then land_map(i,j) = L LAND_PTS = LAND_PTS + 1 LAND_INDEX(LAND_PTS) = L endif endif enddo enddo do N=1,NPFT VEG_PTS(N) = 0 do J=1,LAND_PTS L = LAND_INDEX(J) if (FRAC(L,N) .gt. FRAC_MIN + epsln) then VEG_PTS(N) = VEG_PTS(N) + 1 VEG_INDEX(VEG_PTS(N),N) = L endif enddo enddo if (DAY_TRIF .lt. segtim) then print*, "" print*, "==> Warning: DAY_TRIF is set to be less than segtim." print*, " with option mtlm_segday, triffid will" print*, " only be done once every coupling time." endif if (DAY_PHEN .lt. segtim) then print*, "" print*, "==> Warning: DAY_PHEN is set to be less than segtim." print*, " with option mtlm_segday, phenology will" print*, " only be done once every coupling time." endif if (segtim .lt. 1.) then print*, "" print*, "==> Error: segtim must be greater than one when using" print*, " the option mtlm_segday. Turn off this" print*, " option if segtim is less than one." stop endif if (STEP_DAY .gt. STEPSM) then print*, "" print*, "==> Error: STEPSM is too small. Increase TIMESTEP or " print*, " set STEPSM in size.h to: ", STEP_DAY stop endif if (mod(SEC_DAY*segtim,TIMESTEP) .gt. 1.e-6) then print*, "" print*, "==> Error: there must be an integral number of mtlm " print*, " timesteps in a coupling time." stop endif if (DAY_TRIF .gt. 1) then if (mod(FLOAT(DAY_TRIF),segtim) .gt. 1.e-6) then print*, '==> Error: there must be an integral number coupling' &, ' timesteps within DAY_TRIF when using O_mtlm_segday.' stop else DAY_TRIF = int(float(DAY_TRIF)/segtim) endif endif if (DAY_PHEN .gt. 1) then if (mod(FLOAT(DAY_PHEN),segtim) .gt. 1.e-6) then print*, '==> Error: there must be an integral number coupling' &, ' timesteps within DAY_PHEN when using O_mtlm_segday.' stop else DAY_PHEN = int(float(DAY_PHEN)/segtim) endif endif !----------------------------------------------------------------------- ! zero time average accumulators !----------------------------------------------------------------------- call ta_mtlm_tavg (is, ie, js, je, 0) !----------------------------------------------------------------------- ! zero integrated time average accumulators !----------------------------------------------------------------------- call ta_mtlm_tsi (is, ie, js, je, 0) return end