MCGeneral

Workspace.MCGeneral(self, mc_spectral_rad: Stokvec = self.mc_spectral_rad, mc_error: Stokvec = self.mc_error, mc_iteration_count: Index = self.mc_iteration_count, atm_field: AtmField = self.atm_field, surf_field: SurfaceField = self.surf_field, subsurf_field: SubsurfaceField = self.subsurf_field, scat_species: ArrayOfScatteringSpecies = self.scat_species, mc_antenna: MCAntenna = self.mc_antenna, ray_path_observer_agenda: Agenda = self.ray_path_observer_agenda, spectral_propmat_agenda: Agenda = self.spectral_propmat_agenda, spectral_rad_space_agenda: Agenda = self.spectral_rad_space_agenda, spectral_rad_surface_agenda: Agenda = self.spectral_rad_surface_agenda, frequency: Numeric, sensor_pos: Vector3, sensor_los: Vector2, mc_seed: Index = 0, mc_min_iter: Index = 100, mc_max_iter: Index = 10000, mc_max_scatorder: Index = 20, mc_std_err: Numeric = 0, mc_max_time: Numeric = 0) → None

Backward passive Monte Carlo radiative-transfer calculation.

This ARTS3-native implementation samples antenna directions, extinction collisions, thermal absorption, repeated particle scattering, and space or surface background agendas. It transports all four Stokes components using laboratory-frame phase matrices, including the required polarization-basis rotations. Scattering directions use uniform solid-angle importance sampling.

Authors: Cory Davis, Patrick Eriksson, OpenAI Codex

Parameters:

  • mc_spectral_rad (~pyarts3.arts.Stokvec, optional) – Passive Monte Carlo spectral radiance at one frequency. Defaults to self.mc_spectral_rad. [OUT]

  • mc_error (~pyarts3.arts.Stokvec, optional) – Standard error of mc_spectral_rad. Defaults to self.mc_error. [OUT]

  • mc_iteration_count (~pyarts3.arts.Index, optional) – Number of photon histories used by MCGeneral(). Defaults to self.mc_iteration_count. [OUT]

  • atm_field (~pyarts3.arts.AtmField, optional) – An atmospheric field in ARTS, this is the main atmospheric data structure in ARTS. Defaults to self.atm_field. [IN]

  • surf_field (~pyarts3.arts.SurfaceField, optional) – The surface field. Defaults to self.surf_field. [IN]

  • subsurf_field (~pyarts3.arts.SubsurfaceField, optional) – The sub-surface field. Defaults to self.subsurf_field. [IN]

  • scat_species (~pyarts3.arts.ArrayOfScatteringSpecies, optional) – The scattering species. Defaults to self.scat_species. [IN]

  • mc_antenna (~pyarts3.arts.MCAntenna, optional) – Transmit and receive antenna pattern for Monte Carlo calculations. Defaults to self.mc_antenna. [IN]

  • ray_path_observer_agenda (~pyarts3.arts.Agenda, optional) – Gets the propagation path as it is observed. Defaults to self.ray_path_observer_agenda. [IN]

  • spectral_propmat_agenda (~pyarts3.arts.Agenda, optional) – Computes the propagation matrix, the non-LTE source vector, and their derivatives. Defaults to self.spectral_propmat_agenda. [IN]

  • spectral_rad_space_agenda (~pyarts3.arts.Agenda, optional) – Gets spectral radiance as seen of space. Defaults to self.spectral_rad_space_agenda. [IN]

  • spectral_rad_surface_agenda (~pyarts3.arts.Agenda, optional) – Computes spectral radiance as seen of the surface. Defaults to self.spectral_rad_surface_agenda. [IN]

  • frequency (Numeric) – Frequency [Hz]. [IN]

  • sensor_pos (Vector3) – Sensor position [alt, lat, lon]. [IN]

  • sensor_los (Vector2) – Sensor boresight [zenith, azimuth]. [IN]

  • mc_seed (~pyarts3.arts.Index, optional) – Random seed. Defaults to 0 [IN]

  • mc_min_iter (~pyarts3.arts.Index, optional) – Minimum histories. Defaults to 100 [IN]

  • mc_max_iter (~pyarts3.arts.Index, optional) – Maximum histories. Defaults to 10000 [IN]

  • mc_max_scatorder (~pyarts3.arts.Index, optional) – Maximum scattering order. Defaults to 20 [IN]

  • mc_std_err (~pyarts3.arts.Numeric, optional) – Absolute standard-error stopping threshold in spectral-radiance units; zero disables it. Defaults to 0 [IN]

  • mc_max_time (~pyarts3.arts.Numeric, optional) – Wall-clock stopping time [s]; zero disables it. Defaults to 0 [IN]