ray_path_observersFieldProfilePseudo2D

Workspace.ray_path_observersFieldProfilePseudo2D(self, ray_path_observers: ArrayOfPropagationPathPoint = self.ray_path_observers, atm_field: AtmField = self.atm_field, surf_field: SurfaceField = self.surf_field, ray_path_observer_agenda: Agenda = self.ray_path_observer_agenda, lat: Numeric = self.lat, lon: Numeric = self.lon, azi: Numeric = 0, nup: Index, nlimb: Index, ndown: Index) → 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 [zen+e, 180] degrees zenith.
Limb looking. At top of the atmosphere, cover [90, zen-e] degrees zenith.
Upward looking. At the surface, cover [0, 90] degrees zenith.

Here zen 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.