Atmosphere¶

The atmosphere module contains structures to make the total atmospheric properties required by DISORT.

class pyrt.atmosphere.Atmosphere(*args)[source]¶

A structure to compute the total atmospheric properties.

Atmosphere accepts a collection of atmospheric properties for each constituent in the model. It then computes the total atmospheric arrays from these inputs.

Parameters: args (tuple) – Tuple of (optical depth, single scattering albedo, phase function) for each constituent to add to the atmospheric model.
Return type: None

property legendre_moments: numpy.ndarray¶

Get the total Legendre coefficient array of the atmosphere. This is computed via

\[P = \frac{\Sigma \tilde{\omega}_i * \tau_i * P_i} {\tilde{\omega} * \tau}\]

where \(P\) is the total phase function array, \(P_i\) is the phase function of each constituent, and the other variables are defined in the other properties.

Notes

Each eleemnt of this variable along the wavelength dimension is named PMOM in DISORT.

property optical_depth: numpy.ndarray¶

Get the total optical depth of the atmosphere. This is computed via

\[\tau = \Sigma \tau_i\]

where \(\tau\) is the total optical depth, and \(\tau_i\) is the optical depth of each of the atmospheric species.

Notes

Each element of this variable along the wavelength dimension is named DTAUC in DISORT.

property single_scattering_albedo: numpy.ndarray¶

Get the single scattering albedo of the atmosphere. This is computed via

\[\tilde{\omega} = \frac{\Sigma \tilde{\omega}_i \tau_i}{\tau}\]

where \(\tilde{\omega}\) is the total single scattering albedo, \(\tilde{\omega}_i\) is the single scattering albedo of an individual species, and \(\tau\) is the total optical depth.

Notes

Each element of this variable along the wavelength dimension is named SSALB in DISORT.

Aerosol Controller