Strata
From Rhessys
Jump to navigationJump to search| Variable Name | Description | Units |
| stratum_default_ID | Identifier used by stratum objects to indicate their stratum default files | unique value for each default file |
| K_absorptance | Direct radiation absorption coefficient | range (0 - 1) |
| K_reflectance | Direct radiation reflection coefficient i.e albedo | range (0 - 1) |
| K_transmittance | Direct radiation transmittance coefficient | range (0 - 1) |
| PAR_absorptance | PAR radiation absorption coefficient | range (0 - 1) |
| PAR_reflectance | PAR radiation reflection coefficient i.e albedo | range (0 - 1) |
| PAR_transmittance | PAR radiation transmittance coefficient | range (0 - 1) |
| epc.ext_coef | Canopy light extinction coefficient | range (0-1) |
| specific_rain_capacity | Intercepted rain storage capacity per LAI | metres / LAI |
| specific_snow_capacity | Intercepted snow storage capacity per LAI | metres / LAI |
| wind_attenuation_coef | Wind speed attenuation through canopy (exponential decay) | 1/metres |
| ustar_overu | If u*/u ratio is available for aerodynamic conductance computation the use; otherwise set to -999.9 | (metres/s) / (metres/s) |
| mrc.q10 | Q10 for maintenance respiration | dimensionless |
| mrc.per_N | Maintainance respiration per unit nitrogen | Kg C / kg N / day |
| epc.gr_perc | Percent of new carbon allocation that is lost to growth respiration | range (0 - 1) |
| lai_stomatal_fraction | Stomatal fraction | range (0 - 1) |
| epc.flnr | Ration Leaf nitrogen in Rubisco to leaf nitrogen | Kg / kg |
| epc.ppfd_coef | Shape parameter for APAR / conductance hyperbola curve | s/metres2/micromol |
| epc.topt | Optimum air temperature for stomatal conductance | º C |
| epc.tmax | Maximum air temperature for stomatal conductance | º C |
| epc.tcoef | Coefficient of temperature curve for stomatal conductance | dimensionless |
| epc.psi_open | Leaf water potential for full stomatal conductance | Mpa |
| epc.psi_close | Leaf water potential for complete stomatal closure | Mpa |
| epc.vpd_open | Vapour pressure deficit for full stomatal conductance | Pa |
| epc.vpd_close | Vapour pressure deficit for complete stomatal closure | Pa |
| epc.gl_smax | Maximum stomatal conductance | metres / s |
| epc.gl_c | Leaf-scale cuticular conductance | metres/ s |
| gsurf_slope | Slope of nonvascular conductance vs storage curve - use 0 for vascular strata | dimensionless |
| gsurf_intercept | Intercept for nonvascular conductance vs storage curve - | dimensionless |
| epc.veg_type | Vegetation type | TREE or GRASS |
| epc.phenology_flag | Phenology flag (currently must be static, not modelled) | STATIC or DYNAMIC |
| epc.phenology_type | Phenology type | EVERGREEN or DECIDUOUS |
| epc.max_lai | Maximum leaf area | meters2 / kg C |
| epc.proj_sla | Specific leaf area | meters2 / kg C |
| epc.lai_ratio | All-sided LAI / one-sided LAI ratio | dimensionless |
| epc.proj_swa | Specific wood area (i.e pai per kg C of stem biomass) | 1/kg C |
| epc.leaf_turnover | Annual leaf turnover fraction | range (0-1) |
| epc.day_leafon | Start of growing season | range(1-365) |
| epc.day_leafoff | Beginning of leaf drop | range(1-365) |
| epc.ndays_expand | Number of days for leaf out period | # days |
| epc.ndays_litfall | Number of days for litterfall perio | # days |
| epc.leaf_cn | Carbon:nitrogen ratio of leaves | Kg C / kg N |
| epc.leaflitr_cn | Carbon:nitrogen ratio of leaf litter after translocation | Kg C / kg N |
| min_heat_capacity | Maximum stratum heat capacity - 0 will ignore heat flux model | J/m3/ºK |
| max_heat_capacity | Minimum stratum heat capacity - 0 will ignore heat flux model | J/m3/ ºK |
| epc.allocation_flag | Allocation flag (if static, canopy will not grow, as if using V 4.6) | STATIC or DYNAMIC |
| epc.storage_transfer_prop | Amount of this year\'s annual allocation to be used - value < 1.0 will maintain a carbon store for use in bad years | range (0-1) |
| epc.froot_turnover | Annual fine root turnover fraction (percent carbon per year) | range (0-1) |
