Extend the MedlynConductance slope parameter to support SpaceVaryingInput

experiments/benchmarks/land.jl

@@ -365,11 +365,21 @@ function setup_prob(t0, tf, Δt; nelements = (101, 15))
     # Energy Balance model
     ac_canopy = FT(2.5e3)
 
+    #clm_data is used for g1 and vcmax maps
+    clm_artifact_path = ClimaLand.Artifacts.clm_data_folder_path(; context)
+
     # Conductance Model
-    g1 = FT(141) # Wang et al: 141 sqrt(Pa) for Medlyn model; Natan used 300.
+    # g1 is read in units of sqrt(kPa) and then converted to sqrt(Pa)
+    g1 = SpaceVaryingInput(
+        joinpath(clm_artifact_path, "vegetation_properties_map.nc"),
+        "medlynslope",
+        surface_space;
+        regridder_type,
+        regridder_kwargs = (; extrapolation_bc,),
+        file_reader_kwargs = (; preprocess_func = (data) -> data * 10^(3 / 2),),
+    )
 
     #Photosynthesis model
-    clm_artifact_path = ClimaLand.Artifacts.clm_data_folder_path(; context)
     # vcmax is read in units of umol CO2/m^2/s and then converted to mol CO2/m^2/s
     Vcmax25 = SpaceVaryingInput(
         joinpath(clm_artifact_path, "vegetation_properties_map.nc"),

experiments/long_runs/land.jl

@@ -365,11 +365,21 @@ function setup_prob(t0, tf, Δt; outdir = outdir, nelements = (101, 15))
     # Energy Balance model
     ac_canopy = FT(2.5e4) # this will likely be 10x smaller!
 
+    #clm_data is used for g1 and vcmax maps
+    clm_artifact_path = ClimaLand.Artifacts.clm_data_folder_path(; context)
+
     # Conductance Model
-    g1 = FT(141) # Wang et al: 141 sqrt(Pa) for Medlyn model; Natan used 300.
+    # g1 is read in units of sqrt(kPa) and then converted to sqrt(Pa)
+    g1 = SpaceVaryingInput(
+        joinpath(clm_artifact_path, "vegetation_properties_map.nc"),
+        "medlynslope",
+        surface_space;
+        regridder_type,
+        regridder_kwargs = (; extrapolation_bc,),
+        file_reader_kwargs = (; preprocess_func = (data) -> data * 10^(3 / 2),),
+    )
 
     #Photosynthesis model
-    clm_artifact_path = ClimaLand.Artifacts.clm_data_folder_path(; context)
     # vcmax is read in units of umol CO2/m^2/s and then converted to mol CO2/m^2/s
     Vcmax25 = SpaceVaryingInput(
         joinpath(clm_artifact_path, "vegetation_properties_map.nc"),

ext/CreateParametersExt.jl

@@ -535,7 +535,9 @@ function MedlynConductanceParameters(
 
     parameters = CP.get_parameter_values(toml_dict, name_map, "Land")
     FT = CP.float_type(toml_dict)
-    return MedlynConductanceParameters{FT}(; g1, parameters..., kwargs...)
+    g1 = FT.(g1)
+    G1 = typeof(g1)
+    return MedlynConductanceParameters{FT, G1}(; g1, parameters..., kwargs...)
 end
 
 """

src/standalone/Vegetation/stomatalconductance.jl

@@ -9,13 +9,16 @@ abstract type AbstractStomatalConductanceModel{FT} <:
 The required parameters for the Medlyn stomatal conductance model.
 $(DocStringExtensions.FIELDS)
 """
-Base.@kwdef struct MedlynConductanceParameters{FT <: AbstractFloat}
+Base.@kwdef struct MedlynConductanceParameters{
+    FT <: AbstractFloat,
+    G1 <: Union{FT, ClimaCore.Fields.Field},
+}
     "Relative diffusivity of water vapor (unitless)"
     Drel::FT
     "Minimum stomatal conductance mol/m^2/s"
     g0::FT
     "Slope parameter, inversely proportional to the square root of marginal water use efficiency (Pa^{1/2})"
-    g1::FT
+    g1::G1
 end
 
 Base.eltype(::MedlynConductanceParameters{FT}) where {FT} = FT