!============================================================================== ! This source code is part of the ! Australian Community Atmosphere Biosphere Land Exchange (CABLE) model. ! This work is licensed under the CSIRO Open Source Software License ! Agreement (variation of the BSD / MIT License). ! ! You may not use this file except in compliance with this License. ! A copy of the License (CSIRO_BSD_MIT_License_v2.0_CABLE.txt) is located ! in each directory containing CABLE code. ! ! ============================================================================== ! Purpose: climate-dependent phenology ! ! Called from: SUBROUTINE bgcdriver in casa_cable.F90 ! ! History: Vanessa Haverd Jan 2015 ! ============================================================================== MODULE cable_phenology_module USE cable_def_types_mod, ONLY: met_type, climate_type, canopy_type, veg_parameter_type, & mp, r_2 USE TypeDef, ONLY: i4b, dp USE cable_IO_vars_module, ONLY: patch USE casa_ncdf_module, ONLY: HANDLE_ERR USE CABLE_COMMON_MODULE, ONLY: CurYear, filename, cable_user CONTAINS ! ============================================================================== SUBROUTINE cable_phenology_clim (veg, climate, phen) ! sets the following days of year for use in allocation and leaf senescence ! algorithm depends on pft and climate !phen%doyphase(np,1) ! DOY for greenup !phen%doyphase(np,2) ! DOY for steady LAI ! phen%doyphase(np,3) ! DOY for leaf senescence !phen%doyphase(np,4) ! DOY for minimal LAI season USE casadimension USE casaparm USE casavariable USE phenvariable !data USE cable_surface_types_mod, ONLY: evergreen_needleleaf, deciduous_needleleaf USE cable_surface_types_mod, ONLY: evergreen_broadleaf, deciduous_broadleaf USE cable_surface_types_mod, ONLY: c3_grassland, c4_cropland, shrub_cable USE cable_surface_types_mod, ONLY: aust_temperate, aust_tropical IMPLICIT NONE TYPE (veg_parameter_type), INTENT(IN) :: veg ! vegetation parameters TYPE (phen_variable), INTENT(INOUT) :: phen TYPE (climate_type), INTENT(IN) :: climate ! climate variables INTEGER :: np, days REAL:: gdd0 REAL(r_2) :: phen_tmp REAL, PARAMETER :: k_chilla = 0, k_chillb = 100, k_chillk = 0.05 REAL, PARAMETER :: APHEN_MAX = 200.0, mmoisture_min=0.30 INTEGER, PARAMETER:: COLDEST_DAY_NHEMISPHERE = 355 INTEGER, PARAMETER:: COLDEST_DAY_SHEMISPHERE = 172 REAL :: phengdd5ramp DO np= 1,mp ! evergreen pfts !!bitwiseIF ( veg%iveg(np) == evergreen_needleleaf .OR. & IF ( veg%iveg(np) == evergreen_broadleaf .OR. & veg%iveg(np) == aust_temperate .OR. & veg%iveg(np) == shrub_cable ) THEN phen%doyphase(np,1) = -50 phen%doyphase(np,2) = phen%doyphase(np,1) +14 phen%doyphase(np,3) = 367 phen%doyphase(np,4) = phen%doyphase(np,3) + 14 phen%phase(np) = 2 ENDIF ! summergreen woody pfts IF ( veg%iveg(np) == deciduous_needleleaf .OR. & veg%iveg(np) == deciduous_broadleaf .OR. & veg%iveg(np) == aust_tropical ) THEN ! Calculate GDD0 base value (=gdd to bud burst) for this PFT given ! current length of chilling period (Sykes et al 1996, Eqn 1) gdd0 = k_chilla + k_chillb*EXP(-k_chillk*REAL(climate%chilldays(np))) phengdd5ramp = 200 IF (climate%gdd5(np).GT.gdd0 .AND. phen%aphen(np).LT. APHEN_MAX) THEN phen_tmp = MIN(1.0_r_2, (climate%gdd5(np)-gdd0)/phengdd5ramp) ELSE phen_tmp = 0.0 ENDIF ENDIF ! summergreen grass or crops IF ( veg%iveg(np) .GE. c3_grassland .AND. & veg%iveg(np) .LE. c4_cropland ) THEN phengdd5ramp = 50 phen_tmp = MIN(1.0_r_2, climate%gdd5(np)/phengdd5ramp) ENDIF ! raingreen pfts! (grass or crops) ! need to include raingreen savanna trees here too IF ( veg%iveg(np) .GE. c3_grassland .AND. & veg%iveg(np) .LE. c4_cropland ) THEN IF (climate%dmoist(np).LT. mmoisture_min) phen_tmp = 0.0 ENDIF IF ( veg%iveg(np) == deciduous_needleleaf .OR. & veg%iveg(np) == deciduous_broadleaf .OR. & veg%iveg(np) == aust_tropical .OR. & ( veg%iveg(np) .GE. c3_grassland & .AND. veg%iveg(np) .LE. c4_cropland ) ) THEN IF (phen_tmp.GT.0.0 .AND.( phen%phase(np).EQ.3 .OR. phen%phase(np).EQ.0 )) THEN phen%phase(np) = 1 ! greenup phen%doyphase(np,1) = climate%doy ELSEIF (phen_tmp.GE.1.0_r_2 .AND. phen%phase(np).EQ.1) THEN phen%phase(np) = 2 ! steady LAI phen%doyphase(np,2) = climate%doy ELSEIF (phen_tmp.LT.1.0_r_2 .AND. phen%phase(np).EQ.2) THEN phen%phase(np) = 3 ! senescence phen%doyphase(np,3) = climate%doy ENDIF IF (phen%phase(np)==3) THEN days = MIN(climate%doy,365)-phen%doyphase(np,3) IF (days < 0) days = days + 365 IF (days > 14) phen%phase(np) = 0 ! mimimum LAI ENDIF ! Update annual leaf-on sum IF ((patch(np)%latitude>=0.0 .AND. climate%doy==COLDEST_DAY_NHEMISPHERE).OR. & (patch(np)%latitude <0.0 .AND. climate%doy==COLDEST_DAY_SHEMISPHERE) ) & phen%aphen(np) = 0 phen%phen(np) = phen_tmp phen%aphen(np) = phen%aphen(np) + phen%phen(np) ENDIF ENDDO ! end loop over patches END SUBROUTINE cable_phenology_clim ! ============================================================================== END MODULE cable_phenology_module