VOM_namelist¶
The file “vom_namelist” is an input file for the VOM, containing all settings for the model runs:
| i_alpha | initial slope of j(par) curve | - |
| i_cpccf | water transport cost factor (cpcc=pc * rootdepth * cpccf) | mol/m^3/s |
| i_tcfg | turnover cost factor for foliage grasses (tc=tcf*LAI) | mol/m^2/s |
| i_tcft | turnover cost factor for foliage trees (tc=tcf*LAI) | mol/m^2/s |
| i_maxyear | number of years to process | - |
| i_testyear | number of years after which to perform initial test of netass | - |
| i_ha | parameters to calculate jmax(temp) | J/mol |
| i_hd | parameters to calculate jmax(temp) | J/mol |
| i_toptf | parameter to calculate adaptation of topt (range 0-1, 0.0 means no adaption, 1.0 means topt=tair) | - |
| i_toptstart | start parameter for topt to calculate jmax | K |
| i_rlratio | leaf respiration parameter (rl=rlratio*assmax) | - |
| i_mdtf | total dry mass of living tissues of trees per unit pc | g/m^2 |
| i_mqxtf | total water storage capacity in living tissues of trees per unit md | |
| i_rrootm | root water uptake resistivity | s |
| i_rsurfmin | minimum root area to be maintained | m^2/m^3 |
| i_rsurf | initial root surface area | m^2/m^3 |
| i_rootrad | fine root radius | m |
| i_prootmg | constant root balance pressure in grasses | m |
| i_growthmax | parameter determining maximum daily growth increment of root surface area | m^2/m^3/d |
| i_incrcovg | parameter determining maximum increment percentage of grass cover | - |
| i_incrjmax | parameter determining maximum increment percentage of jmax25 | - |
| i_jmax_ini | parameter determining the start value of jmax25 | mol/m^2/s |
| i_incrlait | parameter determining maximum increment percentage of LAI grasses | - |
| i_incrlaig | parameter determining maximum increment percentage of LAI trees | - |
| i_firstyear | firstyear for the generation of hourly output in computation mode | - |
| i_lastyear | lastyear for the generation of hourly output in computation mode | - |
| i_write_h | flag to greate a file with hourly values from daily values | - |
| i_read_pc | flag to read vegetation coverage values from file | - |
| i_write_nc | flag to write to netcdf instead of plain text | - |
| i_trans_vegcov | fraction of radiative energy reaching soil under full cover (0-1) | - |
| i_lai_function | switch for 1) no LAI dynamics, 2) dynamic LAI, 3) dynamic LAI with shaded/sunlit fractions, 4) dynamic LAI with shaded/sunlit fractions and different Jmax for shaded/sunlit fractions | - - |
| i_no_veg | switch for running VOM without vegetation (0-with, 1-without) | - |
| i_chi_g | ratio projected areas of grass canopy elements on horizontal and vertical surfaces (-) | - |
| i_chi_t | ratio projected areas of tree canopy elements on horizontal and vertical surfaces (-) | - |
| i_inputpath | path to folder with inputfiles | - |
| i_outputpath | path to folder with outputfiles | - |
| o_lambdagf | factor for calculating lambdag_d | mol/mol/m |
| o_wsgexp | exponent for calculating lambdag | - |
| o_lambdatf | factor for calculating lambdat_d | mol/mol/m |
| o_wstexp | exponent for calculating lambdat_d | - |
| o_cait | projected cover perennial vegetation (0-1) | - |
| o_rtdepth | tree rooting depth | m |
| o_mdstore | wood water storage parameter of trees (can be in shufflepar) | g/m^2 |
| o_rgdepth | root depth grasses (can be in shufflepar) | m |
| i_lat | geogr. latitude in degrees | degrees |
| i_lon | geogr. longitude in degrees | degrees |
| i_cz | average soil elevation | m |
| i_cgs | Capital Gamma S (length scale for seepage outflow REG) | m |
| i_zr | average channel bed elevation | m |
| i_go | slope close to channel | rad |
| i_ksat | Saturated hydraulic conductivity | m/s |
| i_thetar | residual soil moisture | - |
| i_thetas | saturated soil moisture | - |
| i_nvg | van Genuchten soil parameter n | - |
| i_avg | van Genuchten soil parameter alpha | 1/m |
| i_delz | thickness of soil sublayers | m |
| vom_command | COMMAND LINE TO RUN ASSIMILATION MODEL | - |
| i_ncomp | MAXIMUM NUMBER OF COMPLEXES (p) | - |
| i_ncompmin | MINIMUM NUMBER OF COMPLEXES (pmin) | - |
| i_resolution | RESOLUTION OF OPTIMISATION (% OF MAX VARIATION WHEN OPTIMISATION STOPS) | - |
| i_patience | NUMBER OF LOOPS WITHOUT INCREASE IN OF BEFORE OPTIMISATION STOPS | - |
| i_nsimp | NUMBER OF OPTIMISATIONS PER COMPLEX AND RUN | - |
| i_focus | IF <1.0, THE SPREAD OF THE RANDOM SEED AROUND THE INITIAL VALUES IS LIMITED | - |
| i_iter | Maximum iterations in case of random runs | - |
| vom_npar | number of parameters in shuffle2par used for optimization in SCE | - |
| n_thread | number of threads to be used in parallel | - |
| sce_restart | restart SCE from previous run | - |
| runtime_limit | time in minutes before sce stops | minutes |
| parname0 | list of parameter names | - |
| parval0 | list of default parameter values | - |
| parmin0 | list of minimum parameter values | - |
| parmax0 | list of maximum parameter values | - |
| paropt0 | list of parameters to optimize (0-1) | - |