!-------------------------------------- LICENCE BEGIN ------------------------------------ !Environment Canada - Atmospheric Science and Technology License/Disclaimer, ! version 3; Last Modified: May 7, 2008. !This is free but copyrighted software; you can use/redistribute/modify it under the terms !of the Environment Canada - Atmospheric Science and Technology License/Disclaimer !version 3 or (at your option) any later version that should be found at: !http://collaboration.cmc.ec.gc.ca/science/rpn.comm/license.html ! !This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; !without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. !See the above mentioned License/Disclaimer for more details. !You should have received a copy of the License/Disclaimer along with this software; !if not, you can write to: EC-RPN COMM Group, 2121 TransCanada, suite 500, Dorval (Quebec), !CANADA, H9P 1J3; or send e-mail to service.rpn@ec.gc.ca !-------------------------------------- LICENCE END -------------------------------------- ! ################MODULE MODD_ISBA 2,2 ! ################ ! !!**** *MODD_ISBA - declaration of packed surface parameters for ISBA scheme !! !! PURPOSE !! ------- ! !! !!** IMPLICIT ARGUMENTS !! ------------------ !! None !! !! REFERENCE !! --------- !! !! AUTHOR !! ------ !! A. Boone *Meteo France* !! !! MODIFICATIONS !! ------------- !! Original 20/09/02 ! !* 0. DECLARATIONS ! ------------ ! USE MODD_TYPE_DATE
USE MODD_TYPE_SNOW
! IMPLICIT NONE !------------------------------------------------------------------------------- ! common/tttb/XPATCH,XVEGTYPE,XVEGTYPE_PATCH,XZS,XCOVER,XALBNIR_DRY, & XALBVIS_DRY,XALBUV_DRY,XALBNIR_WET,XALBVIS_WET,XALBUV_WET,XALBNIR_SOIL,& XALBVIS_SOIL,XALBUV_SOIL,XEMIS_NAT,XTSRAD_NAT,XAOSIP,XAOSIM,XAOSJP, & XAOSJM,XHO2IP,XHO2IM,XHO2JP,XHO2JM,XZ0EFFIP,XZ0EFFIM,XZ0EFFJP,XZ0EFFJM,& XZ0EFFJPDIR,XZ0REL,XSSO_SLOPE,XZ0_O_Z0H,XALBNIR,XALBVIS,XALBUV,XEMIS, & XZ0,XALBNIR_VEG,XALBVIS_VEG,XALBUV_VEG,XVEG,XWRMAX_CF,XRSMIN,XGAMMA, & XCV,XRGL,XROOTFRAC,XABC,XPOI,XBSLAI,XLAIMIN,XSEFOLD,XH_TREE,XANF, & XANMAX,XFZERO,XEPSO,XGAMM,XQDGAMM,XGMES,XQDGMES,XT1GMES,XT2GMES,XAMAX, & XQDAMAX,XT1AMAX,XT2AMAX,XF2I,XGC,XAH,XBH,XDMAX,XCE_NITRO,XCF_NITRO, & XCNA_NITRO,XBSL_INIT_NITRO,XSAND,XCLAY,XRUNOFFB,XWDRAIN,XTAUICE, & XGAMMAT,XDG,XRUNOFFD,XC1SAT,XC2REF,XC3,XC4B,XC4REF,XACOEF,XPCOEF,XWFC, & XWWILT,XWSAT,XBCOEF,XCONDSAT,XMPOTSAT,XCGSAT,XHCAPSOIL,XCONDDRY, & XCONDSLD,XTDEEP,XWR,XTG,XWG,XWGI,XRESA,XLAI,XAN,XANDAY,XANFM,XLE, & XRESPBSTR,XRESPBSTR2,XBIOMASSTR2_LAST,XBIOMASSTR2,XBIOMASS_LAST,XTSTEP,& XOUT_TSTEP,LCOVER,LSTRESS,NSIZE_NATURE_P,NR_NATURE_P, & NPATCH,NGROUND_LAYER,LPRESCRIBED_VEG,CROUGH,CISBA,CPHOTO,CALBEDO, & CRUNOFF,CSCOND,CC1DRY,CSOILFRZ,CDIFSFCOND,CSNOWRES, & TSNOW !$OMP THREADPRIVATE(/tttb/) #define ALLOCATABLE POINTER ! ! ISBA Scheme Options: ! CHARACTER(LEN=4) :: CROUGH ! type of roughness length ! 'Z01D' ! 'Z04D' CHARACTER(LEN=3) :: CISBA ! type of ISBA version: ! ! '2-L' (default) ! ! '3-L' ! ! 'DIF' CHARACTER(LEN=3) :: CPHOTO ! type of photosynthesis ! ! 'NON' ! ! 'AGS' ! ! 'LAI' CHARACTER(LEN=4) :: CALBEDO ! albedo type ! ! 'DRY ' ! ! 'EVOL' ! ! 'WET ' ! ! 'USER' CHARACTER(LEN=4) :: CRUNOFF ! surface runoff formulation ! ! 'WSAT' ! ! 'DT92' CHARACTER(LEN=4) :: CSCOND ! Thermal conductivity ! ! 'DEF ' = DEFault: NP89 implicit method ! ! 'PL98' = Peters-Lidard et al. 1998 used ! ! for explicit computation of CG CHARACTER(LEN=4) :: CC1DRY ! C1 formulation for dry soils ! ! 'DEF ' = DEFault: Giard-Bazile formulation ! ! 'GB93' = Giordani 1993, Braud 1993 ! !discontinuous at WILT CHARACTER(LEN=3) :: CSOILFRZ ! soil freezing-physics option ! ! 'DEF' = Default (Boone et al. 2000; ! ! Giard and Bazile 2000) ! ! 'LWT' = Phase changes as above, ! ! but relation between unfrozen ! ! water and temperature considered ! NOTE that when using the YISBA='DIF' multi-layer soil option, ! the 'LWT' method is used. It is only an option ! when using the force-restore soil method ('2-L' or '3-L') ! CHARACTER(LEN=4) :: CDIFSFCOND ! Mulch effects ! ! 'MLCH' = include the insulating effect of ! ! leaf litter/mulch on the surf. thermal cond. ! ! 'DEF ' = no mulch effect ! NOTE: Only used when YISBA = DIF ! CHARACTER(LEN=3) :: CSNOWRES ! Turbulent exchanges over snow ! ! 'DEF' = Default: Louis (ISBA) ! ! 'RIL' = Maximum Richardson number limit ! ! for stable conditions ISBA-SNOW3L ! ! turbulent exchange option ! !------------------------------------------------------------------------------- ! ! type of initialization of vegetation: from cover types (ecoclimap) or parameters prescribed ! LOGICAL :: LPRESCRIBED_VEG ! T: LAI, veg, z0, z0/z0h, albedo, ! ! and emissivity are prescribed ! ! F: they are computed from ecoclimap ! !------------------------------------------------------------------------------- ! ! Mask and number of grid elements containing patches/tiles: ! INTEGER, ALLOCATABLE, DIMENSION(:) :: NSIZE_NATURE_P ! number of sub-patchs/tiles (-) INTEGER, ALLOCATABLE, DIMENSION(:,:) :: NR_NATURE_P ! patch/tile mask (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XPATCH ! fraction of each tile/patch (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XVEGTYPE ! fraction of each vegetation type for ! ! each grid mesh (-) REAL, ALLOCATABLE, DIMENSION(:,:,:) :: XVEGTYPE_PATCH ! fraction of each vegetation type for ! ! each vegetation unit/patch (-) INTEGER :: NPATCH ! maximum number of sub-tiles (patches) ! ! used at any grid point within a ! ! natural surface fraction INTEGER :: NGROUND_LAYER ! number of ground layers ! !------------------------------------------------------------------------------- ! ! General surface parameters: ! REAL, ALLOCATABLE, DIMENSION(:) :: XZS ! relief (m) REAL, ALLOCATABLE, DIMENSION(:,:) :: XCOVER ! fraction of each ecosystem (-) LOGICAL, ALLOCATABLE, DIMENSION(:):: LCOVER ! GCOVER(i)=T --> ith cover field is not 0. ! ! Averaged Surface radiative parameters: ! REAL, ALLOCATABLE, DIMENSION(:) :: XALBNIR_DRY ! dry soil near-infra-red albedo (-) REAL, ALLOCATABLE, DIMENSION(:) :: XALBVIS_DRY ! dry soil visible albedo (-) REAL, ALLOCATABLE, DIMENSION(:) :: XALBUV_DRY ! dry soil UV albedo (-) REAL, ALLOCATABLE, DIMENSION(:) :: XALBNIR_WET ! wet soil near-infra-red albedo (-) REAL, ALLOCATABLE, DIMENSION(:) :: XALBVIS_WET ! wet soil visible albedo (-) REAL, ALLOCATABLE, DIMENSION(:) :: XALBUV_WET ! wet soil UV albedo (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XALBNIR_SOIL ! soil near-infra-red albedo (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XALBVIS_SOIL ! soil visible albedo (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XALBUV_SOIL ! soil UV albedo (-) REAL, ALLOCATABLE, DIMENSION(:) :: XEMIS_NAT ! patch averaged emissivity (-) REAL, ALLOCATABLE, DIMENSION(:) :: XTSRAD_NAT ! patch averaged radiative temperature (K) ! ! Subgrid orography parameters ! REAL, DIMENSION(:), ALLOCATABLE :: XAOSIP,XAOSIM,XAOSJP,XAOSJM ! directional A/S quantities in 4 coordinate directions ! (IP: i index up; IM: i index down; JP: j index up; JM: j index down) ! They are used in soil routines to compute effective roughness length ! REAL, DIMENSION(:), ALLOCATABLE :: XHO2IP,XHO2IM,XHO2JP,XHO2JM ! directional h/2 quantities in 4 coordinate directions ! (IP: i index up; IM: i index down; JP: j index up; JM: j index down) ! They are used in soil routines to compute effective roughness length ! REAL, DIMENSION(:,:), ALLOCATABLE :: XZ0EFFIP,XZ0EFFIM,XZ0EFFJP,XZ0EFFJM ! directional total roughness lenghts in 4 coordinate directions ! (IP: i index up; IM: i index down; JP: j index up; JM: j index down) ! REAL, DIMENSION(:), ALLOCATABLE :: XZ0EFFJPDIR ! heading of J direction (deg from N clockwise) ! REAL, DIMENSION(:), ALLOCATABLE :: XZ0REL ! relief roughness length (m) ! REAL, DIMENSION(:), ALLOCATABLE :: XSSO_SLOPE ! slope of S.S.O. (-) !------------------------------------------------------------------------------- ! ! Input Parameters, per patch: ! ! - vegetation + bare soil: ! REAL, ALLOCATABLE, DIMENSION(:,:) :: XZ0_O_Z0H ! ratio of surface roughness lengths ! ! (momentum to heat) (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XALBNIR ! near-infra-red albedo (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XALBVIS ! visible albedo (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XALBUV ! UV albedo (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XEMIS ! surface emissivity (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XZ0 ! surface roughness length (m) ! ! - vegetation: ! REAL, ALLOCATABLE, DIMENSION(:,:) :: XALBNIR_VEG ! vegetation near-infra-red albedo (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XALBVIS_VEG ! vegetation visible albedo (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XALBUV_VEG ! vegetation UV albedo (-) ! ! - vegetation: default option (Jarvis) and general parameters: ! REAL, ALLOCATABLE, DIMENSION(:,:) :: XVEG ! vegetation cover fraction (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XWRMAX_CF ! coefficient for maximum water ! ! interception ! ! storage capacity on the vegetation (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XRSMIN ! minimum stomatal resistance (s/m) REAL, ALLOCATABLE, DIMENSION(:,:) :: XGAMMA ! coefficient for the calculation ! ! of the surface stomatal ! ! resistance REAL, ALLOCATABLE, DIMENSION(:,:) :: XCV ! vegetation thermal inertia coefficient (K m2/J) REAL, ALLOCATABLE, DIMENSION(:,:) :: XRGL ! maximum solar radiation ! ! usable in photosynthesis (W/m2) REAL, ALLOCATABLE, DIMENSION(:,:,:) :: XROOTFRAC ! root fraction profile ('DIF' option) ! !------------------------------------------------------------------------------- ! ! - vegetation: Ags parameters ('AGS', 'LAI', 'AST', 'LST', 'NIT' options) ! REAL, DIMENSION(3) :: XABC ! abscissa needed for integration ! ! of net assimilation and stomatal ! ! conductance over canopy depth (-) REAL, DIMENSION(3) :: XPOI ! Gaussian weights for integration ! ! of net assimilation and stomatal ! ! conductance over canopy depth (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XBSLAI ! ratio d(biomass)/d(lai) (kg/m2) REAL, ALLOCATABLE, DIMENSION(:,:) :: XLAIMIN ! minimum LAI (Leaf Area Index) (m2/m2) REAL, ALLOCATABLE, DIMENSION(:,:) :: XSEFOLD ! e-folding time for senescence (s) REAL, ALLOCATABLE, DIMENSION(:,:) :: XH_TREE ! height of trees (m) REAL, ALLOCATABLE, DIMENSION(:,:) :: XANF ! total assimilation over canopy ( REAL, ALLOCATABLE, DIMENSION(:,:) :: XANMAX ! maximum photosynthesis rate ( REAL, ALLOCATABLE, DIMENSION(:,:) :: XFZERO ! ideal value of F, no photo- ! ! respiration or saturation deficit ( REAL, ALLOCATABLE, DIMENSION(:,:) :: XEPSO ! maximum initial quantum use ! ! efficiency (mg J-1 PAR) REAL, ALLOCATABLE, DIMENSION(:,:) :: XGAMM ! CO2 conpensation concentration (ppm) REAL, ALLOCATABLE, DIMENSION(:,:) :: XQDGAMM ! Q10 function for CO2 conpensation ! ! concentration (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XGMES ! mesophyll conductance (m s-1) REAL, ALLOCATABLE, DIMENSION(:,:) :: XQDGMES ! Q10 function for mesophyll conductance (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XT1GMES ! reference temperature for computing ! ! compensation concentration function for ! ! mesophyll conductance: minimum ! ! temperature (K) REAL, ALLOCATABLE, DIMENSION(:,:) :: XT2GMES ! reference temperature for computing ! ! compensation concentration function for ! ! mesophyll conductance: maximum ! ! temperature (K) REAL, ALLOCATABLE, DIMENSION(:,:) :: XAMAX ! leaf photosynthetic capacity (mg m-2 s-1) REAL, ALLOCATABLE, DIMENSION(:,:) :: XQDAMAX ! Q10 function for leaf photosynthetic ! ! capacity (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XT1AMAX ! reference temperature for computing ! ! compensation concentration function for ! ! leaf photosynthetic capacity: minimum ! ! temperature (K) REAL, ALLOCATABLE, DIMENSION(:,:) :: XT2AMAX ! reference temperature for computing ! ! compensation concentration function for ! ! leaf photosynthetic capacity: maximum ! ! temperature (K) ! !------------------------------------------------------------------------------- ! ! - vegetation: Ags Stress parameters ('AST', 'LST', 'NIT' options) ! LOGICAL, ALLOCATABLE, DIMENSION(:,:) :: LSTRESS ! vegetation response type to water ! ! stress (true:defensive false:offensive) (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XF2I ! critical normilized soil water ! ! content for stress parameterisation REAL, ALLOCATABLE, DIMENSION(:,:) :: XGC ! cuticular conductance (m s-1) REAL, ALLOCATABLE, DIMENSION(:,:) :: XAH ! coefficients for herbaceous water stress ! ! response (offensive or defensive) (log(mm/s)) REAL, ALLOCATABLE, DIMENSION(:,:) :: XBH ! coefficients for herbaceous water stress ! ! response (offensive or defensive) (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XDMAX ! maximum air saturation deficit ! ! tolerate by vegetation (kg/kg) ! !------------------------------------------------------------------------------- ! ! - vegetation: Ags Nitrogen-model parameters ('NIT' option) ! REAL, ALLOCATABLE, DIMENSION(:,:) :: XCE_NITRO ! leaf aera ratio sensitivity to ! ! nitrogen concentration (m2/kg) REAL, ALLOCATABLE, DIMENSION(:,:) :: XCF_NITRO ! lethal minimum value of leaf area ! ! ratio (m2/kg) REAL, ALLOCATABLE, DIMENSION(:,:) :: XCNA_NITRO ! nitrogen concentration of active ! ! biomass (kg/kg) REAL, ALLOCATABLE, DIMENSION(:,:) :: XBSL_INIT_NITRO ! biomass/LAI ratio from nitrogen ! ! decline theory (kg/m2) ! !------------------------------------------------------------------------------- ! ! - soil: primary parameters ! REAL, ALLOCATABLE, DIMENSION(:,:) :: XSAND ! sand fraction (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XCLAY ! clay fraction (-) REAL, ALLOCATABLE, DIMENSION(:) :: XRUNOFFB ! sub-grid surface runoff slope parameter (-) REAL, ALLOCATABLE, DIMENSION(:) :: XWDRAIN ! continuous drainage parameter (-) REAL, ALLOCATABLE, DIMENSION(:) :: XTAUICE ! soil freezing characteristic timescale (s) REAL, ALLOCATABLE, DIMENSION(:) :: XGAMMAT ! 'Force-Restore' timescale when using a ! ! prescribed lower boundary temperature (1/days) REAL, ALLOCATABLE, DIMENSION(:,:,:) :: XDG ! soil layer thicknesses (m) ! ! NOTE: in Force-Restore mode, the ! ! uppermost layer thickness is superficial ! ! and is only explicitly used for soil ! ! water phase changes (m) REAL, ALLOCATABLE, DIMENSION(:,:) :: XRUNOFFD ! depth over which sub-grid runoff is ! ! computed: in Force-Restore this is the ! ! total soil column ('2-L'), or root zone ! ! ('3-L'). For the 'DIF' option, it can ! ! be any depth within soil column (m) ! !------------------------------------------------------------------------------- ! ! - soil: Secondary parameters: hydrology ! REAL, ALLOCATABLE, DIMENSION(:) :: XC1SAT ! 'Force-Restore' C1 coefficient at ! ! saturation (-) REAL, ALLOCATABLE, DIMENSION(:) :: XC2REF ! 'Force-Restore' reference value of C2 (-) REAL, ALLOCATABLE, DIMENSION(:) :: XC3 ! 'Force-Restore' C3 drainage coefficient (m) REAL, ALLOCATABLE, DIMENSION(:) :: XC4B ! 'Force-Restore' sub-surface vertical ! ! diffusion coefficient (slope parameter) (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XC4REF ! 'Force-Restore' sub-surface vertical ! ! diffusion coefficient (-) REAL, ALLOCATABLE, DIMENSION(:) :: XACOEF ! 'Force-Restore' surface vertical ! ! diffusion coefficient (-) REAL, ALLOCATABLE, DIMENSION(:) :: XPCOEF ! 'Force-Restore' surface vertical ! ! diffusion coefficient (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XWFC ! field capacity volumetric water content ! ! profile (m3/m3) REAL, ALLOCATABLE, DIMENSION(:,:) :: XWWILT ! wilting point volumetric water content ! ! profile (m3/m3) REAL, ALLOCATABLE, DIMENSION(:,:) :: XWSAT ! porosity profile (m3/m3) REAL, ALLOCATABLE, DIMENSION(:,:) :: XBCOEF ! soil water CH78 b-parameter (-) REAL, ALLOCATABLE, DIMENSION(:,:) :: XCONDSAT ! hydraulic conductivity at saturation (m/s) REAL, ALLOCATABLE, DIMENSION(:,:) :: XMPOTSAT ! matric potential at saturation (m) ! !------------------------------------------------------------------------------- ! ! - soil: Secondary parameters: thermal ! REAL, ALLOCATABLE, DIMENSION(:) :: XCGSAT ! soil thermal inertia coefficient at ! ! saturation (K m2/J) REAL, ALLOCATABLE, DIMENSION(:,:) :: XHCAPSOIL ! soil heat capacity (J/K/m3) REAL, ALLOCATABLE, DIMENSION(:,:) :: XCONDDRY ! soil dry thermal conductivity (W/m/K) REAL, ALLOCATABLE, DIMENSION(:,:) :: XCONDSLD ! soil solids thermal conductivity (W/m/K) REAL, ALLOCATABLE, DIMENSION(:) :: XTDEEP ! prescribed deep soil temperature ! ! (optional) (K) !------------------------------------------------------------------------------- ! ! Prognostic variables: ! ! - Snow Cover: ! TYPE(SURF_SNOW) :: TSNOW ! snow state: ! ! scheme type/option (-) ! ! number of layers (-) ! ! snow (& liq. water) content (kg/m2) ! ! heat content (J/m2) ! ! temperature (K) ! ! density (kg m-3) ! !------------------------------------------------------------------------------- ! ! - Soil and vegetation heat and water: ! REAL, ALLOCATABLE, DIMENSION(:,:) :: XWR ! liquid water retained on the ! ! foliage of the vegetation ! ! canopy (kg/m2) REAL, ALLOCATABLE, DIMENSION(:,:,:) :: XTG ! surface and sub-surface soil ! ! temperature profile (K) REAL, ALLOCATABLE, DIMENSION(:,:,:) :: XWG ! soil volumetric water content profile (m3/m3) REAL, ALLOCATABLE, DIMENSION(:,:,:) :: XWGI ! soil liquid water equivalent volumetric ! ! ice content profile (m3/m3) REAL, ALLOCATABLE, DIMENSION(:,:) :: XRESA ! aerodynamic resistance (s/m) ! !------------------------------------------------------------------------------- ! ! - Vegetation: Ags Prognostic (YPHOTO = ('LAI', 'LST', or 'NIT') or prescribed (YPHOTO='NON', 'AGS' or 'LST') ! REAL, ALLOCATABLE, DIMENSION(:,:) :: XLAI ! Leaf Area Index (m2/m2) ! !------------------------------------------------------------------------------- ! ! - Vegetation: Ags Prognostic (YPHOTO = 'LAI', 'LST', 'AGS' or 'LST') ! REAL, ALLOCATABLE, DIMENSION(:,:) :: XAN ! net CO2 assimilation (mg/m2/s) REAL, ALLOCATABLE, DIMENSION(:,:) :: XANDAY ! daily net CO2 assimilation (mg/m2) REAL, ALLOCATABLE, DIMENSION(:,:) :: XANFM ! maximum leaf assimilation (mg/m2/s) REAL, ALLOCATABLE, DIMENSION(:,:) :: XLE ! evapotranspiration (W/m2) ! !------------------------------------------------------------------------------- ! ! - Vegetation (Ags 'NIT' option): ! REAL, ALLOCATABLE, DIMENSION(:,:) :: XRESPBSTR ! respiration of above-ground ! ! structural biomass (kg/m2/s) REAL, ALLOCATABLE, DIMENSION(:,:) :: XRESPBSTR2 ! respiration of deep structural ! ! biomass (kg/m2/s) REAL, ALLOCATABLE, DIMENSION(:,:) :: XBIOMASSTR2_LAST ! dry below-ground structural biomass ! ! of previous day (kg/m2) REAL, ALLOCATABLE, DIMENSION(:,:) :: XBIOMASSTR2 ! dry below-ground structural biomass (kg/m2) REAL, ALLOCATABLE, DIMENSION(:,:) :: XBIOMASS_LAST ! dry above-ground active biomass of ! ! previous day (kg/m2) ! !------------------------------------------------------------------------------- ! TYPE (DATE_TIME) :: TTIME ! current date and time ! REAL :: XTSTEP ! ISBA time step ! REAL :: XOUT_TSTEP ! ISBA output writing time step !------------------------------------------------------------------------------- ! END MODULE MODD_ISBA