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bepsmain_pnt.c
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bepsmain_pnt.c
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/// @file bepsmain_pnt.c
/// @brief Main function.
/// BEPS, for Biosphere-atmosphere Exchange Process Simulator, renamed from Boreal Ecosystems Productivity Simulator.
/// BEPS was initially developed for boreal ecosystems but was subsequently expanded to all ecosystems of the globe.
/// BEPS 4.11 for a site, to simulate carbon fluxes, energy fluxes and soil water...
///
/// Please cite Leng et al., 2024, Global datasets of hourly carbon and water fluxes simulated using a satellite-based
/// process model with dynamic parameterizations, Earth System Science Data, if you use the BEPS 4.11 in your research.
///
/// Author: J.Y.L.@UofT
/// Date: Mar., 2024
#include "beps.h"
#include "soil.h"
/// @brief Main driver function of BEPS
int main() {
/***** define parameters and arrays *****/
// Declare variables
int jday, rstep, dd, tt, flag, i;
int landcover, soil_type;
float lai_p[366];
float lon, lat, nppyr, lai_yr;
float lcv, stypev, stv, swv, sdpv;
float ccdv, cssdv, csmdv, cfsdv, cfmdv, csmv, cmv, csv, cpv;
float rv, tv, hv, pv, wv, civ;
float m_rad[366][25], m_tem[366][25], m_hum[366][25], m_pre[366][25], m_wind[366][25];
double tem, hum, st, sw, snowdepth, temp_soil1, temp_soil[layer + 1];
double Ccd[5], Cssd[5], Csmd[5], Cfsd[5], Cfmd[5], Csm[5], Cm[5], Cs[5], Cp[5];
double lai, clumping;
char inp_dir[100], site[33], lc_fn[100], cp_fn[100], lai_fn[100], me_fn[100], outp_fn[100];
FILE *lc_ptr, *cp_ptr, *laif_ptr, *me_ptr, *outp_ptr;
FILE *bbparam_ptr;
char bbparam_fn[100];
float gs_mv, gs_bv, vcmaxv;
double gs_m, gs_b, vcmax;
double es, esd;
double theta_vfc[layer + 1], theta_vwp[layer + 1], thermal_s[layer + 1];
double psi_sat[layer + 1], bb[layer + 1], fei[layer + 1];
double Ksat[layer + 1], theta[layer + 1];
double coef[100];
double CosZs;
double parameter[50];
double var_o[40], var_n[40];
double v2last[40];
double outp[10], total[10];
struct climatedata *meteo;
struct results *mid_res;
struct Soil *p_soil;
// Declare dynamic arrays
meteo = (struct climatedata *) malloc(366 * sizeof(struct climatedata));
mid_res = (struct results *) malloc(366 * sizeof(struct results));
p_soil = (struct Soil *) malloc(sizeof(struct Soil));
/***** setup input/output file directory *****/
// Input file stream
sprintf(inp_dir, "../input");
sprintf(site, "p1"); // site name
sprintf(lc_fn, "%s/%s_data1.txt", inp_dir, site); // basic info
sprintf(cp_fn, "%s/%s_data2.txt", inp_dir,site); // carbon pool
sprintf(lai_fn, "%s/%s_lai.txt", inp_dir, site); // daily leaf area index
sprintf(me_fn, "%s/%s_meteo.txt", inp_dir, site); // hourly meteor. data
// Output file stream
sprintf(outp_fn, "../%s_bbparam.txt", site);
// Set all accu. to 0
for (i = 0; i <= 10; i++) total[i] = 0;
// Open basic info files
if ((lc_ptr = fopen(lc_fn, "r")) == NULL)
{
printf("\nUnable to open data1 file (basic info), exiting program...\n");
exit(0);
}
// Read longitude, latitude
fscanf(lc_ptr,"%f %f ",&lon,&lat);
// Read land cover/clumping index data for each pix
fscanf(lc_ptr,"%f %f ",&lcv,&civ);
landcover=(int)lcv;
clumping=civ;
// Read soil txt data for each pix
fscanf(lc_ptr,"%f ",&stypev);
soil_type=(int)stypev;
// Read soil temp data for each pix
fscanf(lc_ptr,"%f ",&stv);
st=stv;
// Read soil water data for each pix
fscanf(lc_ptr,"%f ",&swv);
sw=swv;
// Read snow depth data for each pix
fscanf(lc_ptr,"%f ",&sdpv);
snowdepth=sdpv;
// Close basic info files
fclose(lc_ptr);
// Open carbon pools files
if ((cp_ptr=fopen(cp_fn, "r")) == NULL)
{
printf("\nUnable to open data2 file (carbon pool), exiting program...\n");
exit(0);
}
// Read ann_LAI and ann_npp for each pix
fscanf(cp_ptr,"%f %f ",&lai_yr,&nppyr);
// Read carbon pools data for each pix
fscanf(cp_ptr,"%f %f %f %f %f %f %f %f %f ",&ccdv,&cssdv,&csmdv,&cfsdv,&cfmdv,&csmv,&cmv,&csv,&cpv);
Ccd[0]=ccdv*1000;
Cssd[0]=cssdv*1000;
Csmd[0]=csmdv*1000;
Cfsd[0]=cfsdv*1000;
Cfmd[0]=cfmdv*1000;
Csm[0]=csmv*1000;
Cm[0]=cmv*1000;
Cs[0]=csv*1000;
Cp[0]=cpv*1000;
// Close carbon pools files
fclose(cp_ptr);
// Open lai files
if ((laif_ptr=fopen(lai_fn, "r")) == NULL)
{
printf("\n Unable to open lai file, exiting program...\n\n");
exit(0);
}
// Open meteor. files
if ((me_ptr=fopen(me_fn, "r")) == NULL)
{
printf("\n Unable to open meteor. file, exiting program...\n");
exit(0);
}
/// Read daily lai and hourly meteor. data
for (jday=1; jday<=365; jday++)
{
fscanf(laif_ptr,"%d %f\n",&dd, &lai_p[jday]); // for fixed Vcmax
for (rstep=1;rstep<=24;rstep++)
{
// read climate data
fscanf(me_ptr,"%d %d %f %f %f %f %f \n",&dd,&tt,&rv,&tv,&hv,&pv,&wv);
m_rad[jday-1][rstep-1]=(float)rv;
m_tem[jday-1][rstep-1]=(float)tv;
m_hum[jday-1][rstep-1]=(float)hv;
m_pre[jday-1][rstep-1]=(float)pv/1000; // convert precipitation mm/h to m/s
m_wind[jday-1][rstep-1]=(float)wv;
} // end of hour loop
} // end of day loop
// Close lai and meteor. files
fclose(laif_ptr);
fclose(me_ptr);
// Read parameters according to land cover types
readparam(landcover,parameter);
// Read soil coefficients according to land cover types and soil types
// for soil respiration and NEP calculation
readcoef(landcover,soil_type,coef);
// Open output file
if ((outp_ptr=fopen(outp_fn, "w")) == NULL)
{
printf("\nUnable to open file <%s>, exiting ...\n",outp_fn);
exit(0);
}
/***** start main simulation *****/
// printf("simulation under progress...\n");
// Day loop begin
for (jday=1; jday<=365; jday++)
{
/***** re-calculate LAI & renew clump index *****/
lai=lai_p[jday]*parameter[2]/clumping;
// Hour loop begin
for (rstep=0;rstep<24;rstep++)
{
if (jday==1 && rstep==0) flag=0;
else flag=1;
meteo->Srad = m_rad[jday-1][rstep];
meteo->temp = m_tem[jday-1][rstep];
meteo->rain = m_pre[jday-1][rstep];
meteo->wind = m_wind[jday-1][rstep];
meteo->LR = -200.0; // -200.0 means no measured long-wave radiation, the value will be calculated later
tem = m_tem[jday-1][rstep];
hum = m_hum[jday-1][rstep]; // relative humidity
// Vapour pressure in mbar (hPa)
// es = 0.46*hum*(tem+273.16)/100;
// esd = 6.1078 * exp((17.269*tem)/(237.3 + tem));
//
// // Calculate relative humidity when reading in VPD
// if (es/esd>=1 || es/esd==0) meteo->rh = 100;
// else meteo->rh = 100*es/esd;
meteo->rh = hum; // when reading in relative humidity, percentage
if(flag == 0) // for 1st time step, to initialize var.
{
/***** initialize soil conditions, read soil parameters and set depth *****/
Init_Soil_Parameters(landcover, soil_type, parameter[27], p_soil);
p_soil->r_drainage = parameter[26];
Init_Soil_Status(p_soil, st, tem, sw, snowdepth); // LHE
// Initialize intermediate variables array
for (i=0;i<=40;i++) var_o[i] = 0;
for (i=3;i<=8;i++) var_o[i] = tem;
for(i=9;i<=14;i++) var_o[i] = p_soil->temp_soil_p[i-9];
for(i=21;i<=26;i++) var_o[i] = p_soil->thetam_prev[i-21];
for(i=27;i<=32;i++) var_o[i] = p_soil->ice_ratio[i-27];
}
else // for other time steps, assigned from the temp variables array
for (i=0;i<=40;i++) var_o[i] = v2last[i];
/***** calculate cos_solar zenith angle Z *****/
s_coszs(jday,rstep,lat,lon,&CosZs);
/***** start simulation modules *****/
//printf("%d, %d, %f\n", jday, rstep, p_soil->thetam_prev[0]); // in-process check
inter_prg(jday,rstep,lai,clumping,parameter,meteo,CosZs,var_o,var_n,p_soil,mid_res);
//printf("%d, %d, %f, %f\n", jday, rstep, p_soil->thetam_prev[0], p_soil->f_soilwater); // in-process check
// Store updated variables array in temp array
for (i=0;i<=40;i++) v2last[i]=var_n[i];
/***** plant respiration/NPP module *****/
temp_soil1=p_soil->temp_soil_c[1];
plantresp(landcover,mid_res,lai_yr,lai,tem,temp_soil1,CosZs);
/***** soil respiration module *****/
soilresp(Ccd,Cssd,Csmd,Cfsd,Cfmd,Csm,Cm,Cs,Cp,nppyr,coef,soil_type,p_soil,mid_res);
/***** save data for output *****/
// Hourly output
outp[1]=mid_res->GPP;
outp[2]=mid_res->Trans;
outp[3]=mid_res->Evap;
outp[4]=mid_res->npp_o + mid_res->npp_u;
// Write hourly output to files
fprintf(outp_ptr,"%d %d %f %f %f %f %f %f\n", jday, rstep + 1, mid_res->Gs_o_sunlit, mid_res->Gs_o_shaded,
mid_res->lai_o_sunlit, mid_res->lai_o_shaded, mid_res->GPP, mid_res->Trans);
// Sum of output
total[1]=total[1]+outp[1];
total[2]=total[2]+outp[2];
total[3]=total[3]+outp[3];
}// End of hourly loop
}// End of daily loop
// Write sum of output to files
// printf("total GPP: %f \t Trans: %f \t Evapo: %f \n",total[1],total[2],total[3]);
// Print sum of output
// printf("total GPP: %f \n",total[1]);
// Close output files
fclose(outp_ptr);
// Free pointers
free(meteo);
free(mid_res);
free(p_soil);
return 0;
}
/***** end of main function *****/