Variables#
The summary table and detailed descriptions are auto-generated
using the data from variables.yml
and module crt1d.variables
.
Summary#
Click on a “name” to jump to the details.
name |
units |
shape |
long_name |
---|---|---|---|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed irradiance |
|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed diffuse irradiance |
|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed irradiance by shaded leaves |
|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed irradiance by sunlit leaves |
|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed diffuse irradiance by shaded leaves |
|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed diffuse irradiance by sunlit leaves |
|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed direct irradiance |
|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed irradiance |
|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed irradiance by shaded leaves |
|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed irradiance by sunlit leaves |
|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed irradiance by shaded leaves |
|
W m\(^{-2}\) |
\((n_z-1, n_\lambda)\) |
Absorbed irradiance by sunlit leaves |
|
1 |
Clump factor |
||
m\(^{2}\) m\(^{-2}\) |
\((n_z-1,)\) |
Leaf area index in layer |
|
μm |
\((n_\lambda,)\) |
Wavelength band width |
|
W m\(^{-2}\) |
\((n_z, n_\lambda)\) |
Actinic flux (binned) |
|
1 |
\((n_z-1,)\) |
Sunlit leaf fraction |
|
Fractional leaf area in the psi direction |
|||
W m\(^{-2}\) |
\((n_z, n_\lambda)\) |
Downward irradiance |
|
W m\(^{-2}\) |
\((n_\lambda,)\) |
Incoming diffuse irradiance at top-of-canopy |
|
W m\(^{-2}\) |
\((n_z, n_\lambda)\) |
Downward diffuse irradiance (binned) |
|
W m\(^{-2}\) |
\((n_z, n_\lambda)\) |
Upward diffuse irradiance (binned) |
|
W m\(^{-2}\) |
\((n_z, n_\lambda)\) |
Direct beam irradiance (binned) |
|
W m\(^{-2}\) |
\((n_\lambda,)\) |
Incoming direct irradiance at top-of-canopy |
|
Black leaf attenuation coefficient |
|||
m\(^{2}\) m\(^{-3}\) |
\((n_z-1,)\) |
Leaf area density |
|
m\(^{2}\) m\(^{-2}\) |
\((n_z,)\) |
Leaf area index (cumulative) |
|
m\(^{2}\) m\(^{-2}\) |
\((n_z-1,)\) |
Leaf area index (cumulative) |
|
1 |
\((n_\lambda,)\) |
Leaf reflectance |
|
1 |
\((n_\lambda,)\) |
Leaf transmittance |
|
deg |
Mean leaf angle |
||
cos(psi) |
|||
radians |
Solar zenith angle |
||
1 |
\((n_\lambda,)\) |
||
deg |
Solar zenith angle |
||
μm |
\((n_\lambda,)\) |
Wavelength |
|
μm |
\((n_\lambda+1,)\) |
Wavelength of irradiance band edges |
|
m |
\((n_z,)\) |
Height above ground |
|
m |
\((n_z-1,)\) |
Height above ground |
Detailed#
Detailed descriptions.
aI
#
Layerwise absorbed irradiance.
Attributes:
long_name
: Absorbed irradianceunits: W m\(^{-2}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
aI_df
#
Layerwise absorbed diffuse irradiance.
Attributes:
long_name
: Absorbed diffuse irradianceunits: W m\(^{-2}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
aI_df_lsh
#
Layerwise absorbed diffuse irradiance by shaded leaves per unit leaf area.
Attributes:
long_name
: Absorbed irradiance by shaded leavesunits: W m\(^{-2}\)
detailed units: W (m\(^{2}\) leaf)\(^{-1}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
aI_df_lsl
#
Layerwise absorbed diffuse irradiance by sunlit leaves per unit leaf area.
Attributes:
long_name
: Absorbed irradiance by sunlit leavesunits: W m\(^{-2}\)
detailed units: W (m\(^{2}\) leaf)\(^{-1}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
aI_df_sh
#
Layerwise absorbed diffuse irradiance by shaded leaves. Not per unit leaf area.
Attributes:
long_name
: Absorbed diffuse irradiance by shaded leavesunits: W m\(^{-2}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
aI_df_sl
#
Layerwise absorbed diffuse irradiance by sunlit leaves. Not per unit leaf area.
Attributes:
long_name
: Absorbed diffuse irradiance by sunlit leavesunits: W m\(^{-2}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
aI_dr
#
Layerwise absorbed direct irradiance.
Attributes:
long_name
: Absorbed direct irradianceunits: W m\(^{-2}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
aI_l
#
Layerwise absorbed irradiance per units leaf area.
Attributes:
long_name
: Absorbed irradianceunits: W m\(^{-2}\)
detailed units: W (m\(^{2}\) leaf)\(^{-1}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
aI_lsh
#
Layerwise absorbed irradiance by shaded leaves per unit leaf area.
Attributes:
long_name
: Absorbed irradiance by shaded leavesunits: W m\(^{-2}\)
detailed units: W (m\(^{2}\) leaf)\(^{-1}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
aI_lsl
#
Layerwise absorbed irradiance by sunlit leaves per unit leaf area.
Attributes:
long_name
: Absorbed irradiance by sunlit leavesunits: W m\(^{-2}\)
detailed units: W (m\(^{2}\) leaf)\(^{-1}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
aI_sh
#
Layerwise absorbed irradiance by shaded leaves. Not per unit leaf area. Shaded leaves absorb only diffuse light.
Attributes:
long_name
: Absorbed irradiance by shaded leavesunits: W m\(^{-2}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
aI_sl
#
Layerwise absorbed irradiance by sunlit leaves. Not per unit leaf area. Sunlit leaves absorb both direct and diffuse light.
Attributes:
long_name
: Absorbed irradiance by sunlit leavesunits: W m\(^{-2}\)
type:
array_like
shape:
(n_z-1, n_wl)
dims:
['zm', 'wl']
clump
#
Clump factor \(\Omega\). In (0, 1], this parameter represents the impact of leaf clumping in space on canopy light transmission and leaf absorption. It can vary with height in real canopies (like some of the other parameters here), but this is currently not supported.
Attributes:
long_name
: Clump factorunits: 1
type:
float
shape:
()
dims:
()
dlai
#
LAI increment within layer (at midpoint levels).
Attributes:
long_name
: Leaf area index in layerunits: m\(^{2}\) m\(^{-2}\)
detailed units: (m\(^{2}\) leaf) (m\(^{2}\) ground area)\(^{-1}\)
type:
array_like
shape:
(n_z-1,)
dims:
['zm']
dwl
#
Wavelength band width.
Attributes:
long_name
: Wavelength band widthunits: μm
type:
array_like
shape:
(n_wl,)
dims:
['wl']
F
#
Actinic flux (spherical) in wavebands.
Attributes:
long_name
: Actinic flux (binned)units: W m\(^{-2}\)
type:
array_like
shape:
(n_z, n_wl)
dims:
['z', 'wl']
f_slm
#
Fraction of leaf area within mass layer that is sunlit.
Attributes:
long_name
: Sunlit leaf fractionunits: 1
type:
array_like
shape:
(n_z-1,)
dims:
['zm']
G
#
The value of the \(G\) function for the current solar zenith angle.
Attributes:
long_name
: Fractional leaf area in the psi directionunits:
type:
float
shape:
()
dims:
()
G_fn
#
Function used to compute \(G\) from beam angle (\(G = G(\psi)\)). \(G = K_b \mu = K_b \cos{\psi}\). \(G\) is the ratio of leaf area projected in the \(\psi\) direction to actual leaf area. It is an average over all leaf inclination (and azimuthal) angles in the leaf angle distribution.
Attributes:
long_name
: Noneunits:
type:
function
shape:
()
dims:
()
I_d
#
Downward irradiance (diffuse+direct) in wavebands.
Attributes:
long_name
: Downward irradianceunits: W m\(^{-2}\)
type:
array_like
shape:
(n_z, n_wl)
dims:
['z', 'wl']
I_df0_all
#
Incoming (downwelling) diffuse irradiance(s) at the top of the canopy.
Warning
Not spectral, energy flux density in discrete band.
Attributes:
long_name
: Incoming diffuse irradiance at top-of-canopyunits: W m\(^{-2}\)
type:
array_like
shape:
(n_wl,)
dims:
['wl']
I_df_d
#
Downward diffuse irradiance (hemispherical) in wavebands.
Attributes:
long_name
: Downward diffuse irradiance (binned)units: W m\(^{-2}\)
type:
array_like
shape:
(n_z, n_wl)
dims:
['z', 'wl']
I_df_u
#
Upward diffuse irradiance (hemispherical) in wavebands.
Attributes:
long_name
: Upward diffuse irradiance (binned)units: W m\(^{-2}\)
type:
array_like
shape:
(n_z, n_wl)
dims:
['z', 'wl']
I_dr
#
Direct irradiance in wavebands.
Attributes:
long_name
: Direct beam irradiance (binned)units: W m\(^{-2}\)
type:
array_like
shape:
(n_z, n_wl)
dims:
['z', 'wl']
I_dr0_all
#
Incoming (downwelling) direct irradiance(s) at the top of the canopy.
Warning
Not spectral, energy flux density in discrete band.
Attributes:
long_name
: Incoming direct irradiance at top-of-canopyunits: W m\(^{-2}\)
type:
array_like
shape:
(n_wl,)
dims:
['wl']
K_b
#
\(K_b\) is the direct beam extinction coefficient.
Attributes:
long_name
: Black leaf attenuation coefficientunits:
type:
float
shape:
()
dims:
()
K_b_fn
#
Function used to compute \(K_b\) from beam angle (\(K_b = K_b(\psi)\)). It depends on the leaf angle distribution (function) used, so it must be passed to the solvers.
Attributes:
long_name
: Noneunits:
type:
function
shape:
()
dims:
()
lad
#
Leaf area density \(dlai/dz\).
Attributes:
long_name
: Leaf area densityunits: m\(^{2}\) m\(^{-3}\)
detailed units: (m\(^{2}\) leaf) (m\(^{2}\) ground area)\(^{-1}\) m\(^{-1}\)
type:
array_like
shape:
(n_z-1,)
dims:
['zm']
lai
#
Leaf area index (LAI) profile, accumulated from the top (\(z=h_c\)).
Bottom to top:
lai[0]
: total LAIlai[-1] = 0
(canopy-atmos interface)
Attributes:
long_name
: Leaf area index (cumulative)units: m\(^{2}\) m\(^{-2}\)
detailed units: (m\(^{2}\) leaf) (m\(^{2}\) ground area)\(^{-1}\)
type:
array_like
shape:
(n_z,)
dims:
['z']
laim
#
LAI at mass levels.
Attributes:
long_name
: Leaf area index (cumulative)units: m\(^{2}\) m\(^{-2}\)
detailed units: (m\(^{2}\) leaf) (m\(^{2}\) ground area)\(^{-1}\)
type:
array_like
shape:
(n_z-1,)
dims:
['zm']
leaf_r
#
Leaf element reflectance.
Attributes:
long_name
: Leaf reflectanceunits: 1
type:
array_like
shape:
(n_wl,)
dims:
['wl']
leaf_t
#
Leaf element transmittance.
Attributes:
long_name
: Leaf transmittanceunits: 1
type:
array_like
shape:
(n_wl,)
dims:
['wl']
mla
#
Mean leaf (inclination) angle.
Attributes:
long_name
: Mean leaf angleunits: deg
type:
float
shape:
()
dims:
()
mu
#
\(\cos(\psi)\).
Attributes:
long_name
: cos(psi)units:
type:
float
shape:
()
dims:
()
psi
#
\(\psi\) is the solar zenith angle (SZA).
Attributes:
long_name
: Solar zenith angleunits: radians
type:
float
shape:
()
dims:
()
soil_r
#
Soil (ground surface) reflectivity.
Attributes:
long_name
: Noneunits: 1
type:
array_like
shape:
(n_wl,)
dims:
['wl']
sza
#
Solar zenith angle (SZA). \(\psi\) is the SZA in radians.
Attributes:
long_name
: Solar zenith angleunits: deg
type:
float
shape:
()
dims:
()
wl
#
Wavelength (centers of the irradiance bins).
Attributes:
long_name
: Wavelengthunits: μm
type:
array_like
shape:
(n_wl,)
dims:
['wl']
wle
#
Wavelengths of the irradiance band edges.
Attributes:
long_name
: Wavelength of irradiance band edgesunits: μm
type:
array_like
shape:
(n_wl+1,)
dims:
['wle']
z
#
Height above ground for the interface levels (light fluxes).
Attributes:
long_name
: Height above groundunits: m
type:
array_like
shape:
(n_z,)
dims:
['z']
zm
#
Height above ground for the layer midpoints (mass levels).
Attributes:
long_name
: Height above groundunits: m
type:
array_like
shape:
(n_z-1,)
dims:
['zm']