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Reference

PML.PMLV2 — Function
PMLV2 (Penman–Monteith–Leuning Version 2) Evapotranspiration model

Arguments

  • Prcp : mm/d
  • Tavg : degC
  • Rs : W m-2
  • Rn : W m-2
  • VPD : W m-2
  • U2 : m/s
  • LAI : m2 m-2
  • Pa : kPa
  • Ca : ppm, default 380
  • Ω : clamping index, default is 1.0

Examples

References

  1. Gan Rong, 2018, Ecohydrology
  2. Zhang Yongqiang, 2019, RSE
  3. Kong Dongdong, 2019, ISPRS
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PMLV2(Prcp, Tavg, Rs, Rn, VPD, U2, LAI, Pa, Ca; par=param0, frame=3)

Notes

一个站点的计算。注意，不同植被类型，参数不同。

Arguments

  • frame: in 8-days
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Arguments

  • kw: named keyword arguments
    • r: interm_PML
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PML.cal_Ei_Dijk2021 — Function
cal_Ei_Dijk2021(Prcp::T, LAI::T, par::Param_PMLV2) where {T<:Real}

References

  1. van Dijk, A.I.J.M, 2001, Eq2.
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PML.photosynthesis — Function
photosynthesis(Tavg::T, Rs::T, VPD::T, LAI::T, Ca=380.0; par)

Example

# GPP, Gc_w = photosynthesis(Tavg, Rs, VPD, LAI, Ca; par)
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PML.ModelCalib — Function
ModelCalib(df::AbstractDataFrame, par0::AbstractETParam; 
    IGBPcode=nothing, maxn=2500, of_gof=:NSE, kw...)
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PML.Param_PMLV2 — Type
struct Param_PMLV2{FT<:AbstractFloat} <: AbstractETParam{FT}

Fields

  • α::Real: initial slope of the light response curve to assimilation rate, (i.e., quantum efficiency; μmol CO2 [μmol PAR]⁻¹)` Default: 0.06

  • η::Real: initial slope of the CO2 response curve to assimilation rate, (i.e., carboxylation efficiency; μmol m⁻² s⁻¹ [μmol m⁻² s⁻¹]⁻¹) Default: 0.04

  • g1::Real: stomatal conductance coefficient Default: 10.0

  • Am_25::Real: carbon saturated rate of photosynthesis at 25 °C, μmol m⁻² s⁻¹ Default: 50.0

  • VPDmin::Real: parameter to constrain gc, kPa Default: 0.9

  • VPDmax::Real: parameter to constrain gc, kPa Default: 4.0

  • D0::Real: 水汽压参数 Default: 0.7

  • kQ::Real: extinction coefficients for visible radiation Default: 0.45

  • kA::Real: extinction coefficients for available energy Default: 0.7

  • S_sls::Real: Specific leaf storage, van Dijk, A.I.J.M, 2001, Eq2 Default: 0.1

  • fER0::Real: Canopy cover fraction related parameter Default: 0.1

  • hc::Real: canopy height, [m] Default: 1.0

  • d_pc::Real: photoperiod constraint Default: 2.0

  • _hc::Vector{FT} where FT<:Real: Default: [1.0, 1.0, 1.0]

  • _η::Vector{FT} where FT<:Real: Default: [0.04, 0.04, 0.04]

  • _α::Vector{FT} where FT<:Real: Default: [0.06, 0.06, 0.06]

  • _g1::Vector{FT} where FT<:Real: Default: [10.0, 10.0, 10.0]

  • _Am_25::Vector{FT} where FT<:Real: Default: [50.0, 50.0, 50.0]

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