skyscapes.physical_model.lambertian

Grey Lambertian physical model – analytic phase, no wavelength dependence.

Classes

LambertianPhysicalModel

Lambertian reflector.

Functions

_lambert_phase(phase_angle_rad)

Classical Lambert phase: Phi(b) = (sin(b) + (pi - b) * cos(b)) / pi.

Module Contents

skyscapes.physical_model.lambertian._lambert_phase(phase_angle_rad)

Classical Lambert phase: Phi(b) = (sin(b) + (pi - b) * cos(b)) / pi.

Parameters:

phase_angle_rad (jaxtyping.Array)

Return type:

jaxtyping.Array

class skyscapes.physical_model.lambertian.LambertianPhysicalModel

Bases: skyscapes.physical_model.base.AbstractPhysicalModel

Lambertian reflector.

Attributes:

Ag: Geometric albedo, shape (K,).

Ag: jaxtyping.Array

contrast(phase_angle_rad, dist_AU, wavelength_nm, Rp_Rearth)

Contrast = Ag * Phi(beta) * (Rp/r)**2. Wavelength-independent.

phase_angle_rad and dist_AU are shape (K, T). wavelength_nm is part of the interface but ignored in the grey case. Rp_Rearth is shape (K,), supplied by the host Planet.

Parameters:

• phase_angle_rad (jaxtyping.Array)

• dist_AU (jaxtyping.Array)

• wavelength_nm (jaxtyping.Array)

• Rp_Rearth (jaxtyping.Array)

Return type:

jaxtyping.Array

__repr__()

One-line summary of geometric albedo.

Return type:

str