ray_path_observersFieldProfilePseudo2D
- Workspace.ray_path_observersFieldProfilePseudo2D(self, ray_path_observers: pyarts3.arts.ArrayOfPropagationPathPoint | None = None, atmospheric_field: pyarts3.arts.AtmField | None = None, surface_field: pyarts3.arts.SurfaceField | None = None, ray_path_observer_agenda: pyarts3.arts.Agenda | None = None, latitude: pyarts3.arts.Numeric | None = None, longitude: pyarts3.arts.Numeric | None = None, azimuth: pyarts3.arts.Numeric | None = None, nup: pyarts3.arts.Index | None = None, nlimb: pyarts3.arts.Index | None = None, ndown: pyarts3.arts.Index | None = None) None
Get a list of observer positions and line of sights to represent observing all angles of a profile.
Three observer types are added:
Downward looking. At the top-of-atmosphere, cover [za+e, 180] degrees zenith.
Limb looking. At top of the atmosphere, cover [90, za-e] degrees zenith.
Upward looking. At the surface, cover [0, 90] degrees zenith.
Here za is the surface tangent zenith angle from the top of the atmosphere. e indicates the smallest possible numerical offset from that angle in the signed direction.
Note
Each position has their zenith angle coverage linearly separated in degrees. To avoid the top-of-atmosphere limb singularity and bottom of atmosphere limb overlap, the limb zentih angle grid is divided into nlimb+1 segments. The 90 degree angle is then discarded.
See also
pyarts3.plots.ArrayOfPropagationPathPoint.plot()
for a visualization of the geometry.Author: Richard Larsson
- Parameters:
ray_path_observers (ArrayOfPropagationPathPoint, optional) – A list path points making up the observers of a propagation path. See
ray_path_observers
, defaults toself.ray_path_observers
[OUT]atmospheric_field (AtmField, optional) – An atmospheric field in ARTS. See
atmospheric_field
, defaults toself.atmospheric_field
[IN]surface_field (SurfaceField, optional) – The surface field. See
surface_field
, defaults toself.surface_field
[IN]ray_path_observer_agenda (Agenda, optional) – Gets the propagation path as it is obeserved. See
ray_path_observer_agenda
, defaults toself.ray_path_observer_agenda
[IN]latitude (Numeric, optional) – A single latitude. See
latitude
, defaults toself.latitude
[IN]longitude (Numeric, optional) – A single longitude. See
longitude
, defaults toself.longitude
[IN]azimuth (Numeric, optional) – Azimuth angle for the observer. Defaults to
0
[IN]nup (Index) – Number of upward looking observers (min 2). [IN]
nlimb (Index) – Number of limb looking observers (min 2). [IN]
ndown (Index) – Number of downward looking observers (min 2). [IN]