public ClimateRegionPnETVariables(MonthlyClimateRecord monthlyClimateRecord, DateTime date, bool wythers, bool dTemp, List <ISpeciesPNET> Species, float latitude)
{
_monthlyClimateRecord = monthlyClimateRecord;
_date = date;
speciesVariables = new Dictionary <string, SpeciesPnETVariables>();
_tave = (float)(0.5 * (monthlyClimateRecord.Tmin + monthlyClimateRecord.Tmax));
_dayspan = Calculate_DaySpan(date.Month);
float hr = Calculate_hr(date.DayOfYear, latitude);
_daylength = Calculate_DayLength(hr);
float nightlength = Calculate_NightLength(hr);
_tday = (float)(0.5 * (monthlyClimateRecord.Tmax + _tave));
_vpd = Calculate_VPD(Tday, (float)monthlyClimateRecord.Tmin);
foreach (ISpeciesPNET spc in Species)
{
SpeciesPnETVariables speciespnetvars = GetSpeciesVariables(monthlyClimateRecord, wythers, dTemp, Daylength, nightlength, spc);
speciesVariables.Add(spc.Name, speciespnetvars);
}
}
public static List <IEcoregionPnETVariables> GetClimateRegionData(IEcoregionPnET ecoregion, DateTime start, DateTime end, Climate.Phase spinupOrfuture)
{
// Monthly simulation data untill but not including end
List <IEcoregionPnETVariables> data = new List <IEcoregionPnETVariables>();
// Date: the last date in the collection of running data
DateTime date = new DateTime(start.Ticks);
var oldYear = -1;
while (end.Ticks > date.Ticks)
{
if (!all_values[ecoregion].ContainsKey(date))
{
if (date.Year != oldYear)
{
//PlugIn.ModelCore.UI.WriteLine($"Retrieving Climate Library for year {date.Year}.");
if (spinupOrfuture == Climate.Phase.Future_Climate)
{
if (Climate.Future_MonthlyData.ContainsKey(date.Year))
{
ClimateRegionData.AnnualWeather[ecoregion] = Climate.Future_MonthlyData[date.Year][ecoregion.Index];
}
}
else
{
if (Climate.Spinup_MonthlyData.ContainsKey(date.Year))
{
ClimateRegionData.AnnualWeather[ecoregion] = Climate.Spinup_MonthlyData[date.Year][ecoregion.Index];
}
}
oldYear = date.Year;
}
var monthlyData = new MonthlyClimateRecord(ecoregion, date);
List <ISpeciesPNET> species = PlugIn.SpeciesPnET.AllSpecies.ToList();
IEcoregionPnETVariables ecoregion_variables = new ClimateRegionPnETVariables(monthlyData, date, wythers, dtemp, species, ecoregion.Latitude);
all_values[ecoregion].Add(date, ecoregion_variables);
}
data.Add(all_values[ecoregion][date]);
date = date.AddMonths(1);
}
return(data);
}
private SpeciesPnETVariables GetSpeciesVariables(MonthlyClimateRecord monthlyClimateRecord, bool wythers, bool dTemp, float daylength, float nightlength, ISpeciesPNET spc)
{
// Class that contains species specific PnET variables for a certain month
SpeciesPnETVariables speciespnetvars = new SpeciesPnETVariables();
// Gradient of effect of vapour pressure deficit on growth.
speciespnetvars.DVPD = Math.Max(0, 1 - spc.DVPD1 * (float)Math.Pow(VPD, spc.DVPD2));
// ** CO2 effect on growth **
// M. Kubiske method for wue calculation: Improved methods for calculating WUE and Transpiration in PnET.
float JH2O = (float)(0.239 * ((VPD / (8314.47 * (monthlyClimateRecord.Tmin + 273)))));
speciespnetvars.JH2O = JH2O;
// NETPSN net photosynthesis
// Modify AmaxB based on CO2 level
// Equations solved from 2 known points: (350, AmaxB) and (550, AmaxB * CO2AmaxBEff)
float AmaxB_slope = (float)(((spc.CO2AMaxBEff - 1.0) * spc.AmaxB) / 200.0); // Derived from m = [(AmaxB*CO2AMaxBEff) - AmaxB]/[550 - 350]
float AmaxB_int = (float)(-1.0 * (((spc.CO2AMaxBEff - 1.0) * 1.75) - 1.0) * spc.AmaxB); // Derived from b = AmaxB - (AmaxB_slope * 350)
float AmaxB_CO2 = (float)(AmaxB_slope * monthlyClimateRecord.CO2 + AmaxB_int);
speciespnetvars.AmaxB_CO2 = AmaxB_CO2;
//-------------------FTempPSN (public for output file)
if (dTemp)
{
speciespnetvars.FTempPSN = DTempResponse(Tday, spc.PsnTOpt, spc.PsnTMin, spc.PsnTMax);
}
else
{
//speciespnetvars.FTempPSN = EcoregionPnETVariables.LinearPsnTempResponse(Tday, spc.PsnTOpt, spc.PsnTMin); // Original PnET-Succession
speciespnetvars.FTempPSN = CurvelinearPsnTempResponse(Tday, spc.PsnTOpt, spc.PsnTMin); // Modified 051216(BRM)
}
// Dday maintenance respiration factor (scaling factor of actual vs potential respiration applied to daily temperature)
float fTempRespDay = CalcQ10Factor(spc.Q10, Tday, spc.PsnTOpt);
// Night maintenance respiration factor (scaling factor of actual vs potential respiration applied to night temperature)
float fTempRespNight = CalcQ10Factor(spc.Q10, Tmin, spc.PsnTOpt);
// Unitless respiration adjustment: public for output file only
float FTempRespWeightedDayAndNight = (float)Math.Min(1.0, (fTempRespDay * daylength + fTempRespNight * nightlength) / ((float)daylength + (float)nightlength));;
speciespnetvars.FTempRespWeightedDayAndNight = FTempRespWeightedDayAndNight;
// Scaling factor of respiration given day and night temperature and day and night length
speciespnetvars.MaintRespFTempResp = spc.MaintResp * FTempRespWeightedDayAndNight;
// Respiration gC/timestep (RespTempResponses[0] = day respiration factor)
// Respiration acclimation subroutine From: Tjoelker, M.G., Oleksyn, J., Reich, P.B. 1999.
// Acclimation of respiration to temperature and C02 in seedlings of boreal tree species
// in relation to plant size and relative growth rate. Global Change Biology. 49:679-691,
// and Tjoelker, M.G., Oleksyn, J., Reich, P.B. 2001. Modeling respiration of vegetation:
// evidence for a general temperature-dependent Q10. Global Change Biology. 7:223-230.
// This set of algorithms resets the veg parameter "BaseFolRespFrac" from
// the static vegetation parameter, then recalculates BaseFolResp based on the adjusted
// BaseFolRespFrac
// Base foliage respiration
float BaseFolResp;
// Base parameter in Q10 temperature dependency calculation
float Q10base;
if (wythers == true)
{
//Computed Base foliar respiration based on temp; this is species-level, so you can compute outside this IF block and use for all cohorts of a species
BaseFolResp = (0.138071F - 0.0024519F * Tave);
//Midpoint between Tave and Optimal Temp; this is also species-level
float Tmidpoint = (Tave + spc.PsnTOpt) / 2F;
// Base parameter in Q10 temperature dependency calculation in current temperature
Q10base = (3.22F - 0.046F * Tmidpoint);
}
else
{
// The default PnET setting is that these
BaseFolResp = spc.BFolResp;
Q10base = spc.Q10;
}
// Growth respiration factor
speciespnetvars.FTempRespDay = BaseFolResp * CalcQ10Factor(Q10base, Tave, spc.PsnTOpt);
return(speciespnetvars);
}
