ERF_RadStruct.H File Reference

Radiation model type and control parameters. More...

#include <cmath>
#include <string>
#include <iostream>
#include <AMReX_ParmParse.H>
#include <AMReX_ParallelDescriptor.H>
#include <AMReX_Print.H>
#include <AMReX_Gpu.H>
#include <ERF_IndexDefines.H>
#include <ERF_TurbStruct.H>
#include <ERF_NoahMPSoilTable.H>
#include <ERF_NoahMPVegetationTable.H>
#include <ERF_SimplifiedSEB.H>
#include <cstdio>

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Classes
struct	RadChoice
	Container holding radiation-related choices and parameters. More...

Functions
	AMREX_ENUM (TauProfileType, Constant, CloudLayer)
	Optical depth profile type for the two-stream solver. More...
	AMREX_ENUM (AerosolProfileType, Constant, Exponential, Table)
	Aerosol optical depth profile type for the two-stream solver. More...
	AMREX_ENUM (TauModel, PerLayer, Mass)
	How the clear-sky optical depth of a layer is obtained. More...
	AMREX_ENUM (SEBTurbulentFluxSource, SurfaceLayer, Defaults)
	Where the simplified surface energy balance takes its sensible (H) and latent (LE) heat fluxes from when no land-surface model supplies them. More...

Detailed Description

Radiation model type and control parameters.

Function Documentation

AMREX_ENUM() [1/4]

AMREX_ENUM	(	AerosolProfileType	,
		Constant	,
		Exponential	,
		Table
	)

Aerosol optical depth profile type for the two-stream solver.

• Constant: uniform aerosol tau_per_layer applied at every level.
• Exponential: aerosol tau decays exponentially with height via tau_aerosol(k) = tau_surface * exp(-z(k) / scale_height).
• Table: aerosol tau prescribed per level via lookup (future extension).

AMREX_ENUM() [2/4]

AMREX_ENUM	(	SEBTurbulentFluxSource	,
		SurfaceLayer	,
		Defaults
	)

Where the simplified surface energy balance takes its sensible (H) and latent (LE) heat fluxes from when no land-surface model supplies them.

• SurfaceLayer: the fluxes the lower surface layer applies to the air, in W/m^2 (the same conversion as the sensible_heat_flux / latent_heat_flux 2D outputs), so the ground loses what the air receives. Used only where a zlo surface layer exists and applies a flux; otherwise the scalar defaults.
• Defaults: the constants seb_hfx_default and seb_lh_default everywhere.

AMREX_ENUM() [3/4]

AMREX_ENUM	(	TauModel	,
		PerLayer	,
		Mass
	)

How the clear-sky optical depth of a layer is obtained.

• PerLayer: the fixed tau_per_layer / tau_lw_per_layer for every layer regardless of its thickness (the original model; the column optical depth then scales with the number of vertical cells).
• Mass: from the layer mass path, tau = rho dz (k_dry + k_vapor qv + ...), so the column optical depth is set by the atmosphere, not by the grid. Shortwave uses sw_kabs_dry, sw_kscat_dry (Rayleigh, scattering), sw_kabs_vapor and sw_kext_cloud with sw_cloud_omega / sw_cloud_g; longwave uses lw_kabs_dry, lw_kabs_vapor and lw_kabs_cloud.

AMREX_ENUM() [4/4]

AMREX_ENUM	(	TauProfileType	,
		Constant	,
		CloudLayer
	)

Optical depth profile type for the two-stream solver.

• Constant: tau_per_layer / tau_lw_per_layer applied uniformly at every level, independent of layer thickness.
• CloudLayer: an additional cloud optical depth is added within [cloud_base_height_m, cloud_top_height_m], on top of the clear-sky background tau_per_layer / tau_lw_per_layer.