Viewing Geometry

Viewing Geometry#

class sasktran2.ViewingGeometry(self: sasktran2._core.ViewingGeometry)#

Bases: pybind11_object

add_ray(self: sasktran2._core.ViewingGeometry, arg0: sasktran2._core.ViewingGeometryBase) → None#

Viewing Policies#

class sasktran2.TangentAltitudeSolar(self: sasktran2._core.TangentAltitudeSolar, tangent_altitude_m: float, relative_azimuth: float, observer_altitude_m: float, cos_sza: float)#

Bases: ViewingGeometryBase

Defines a viewing ray from the observer altitude, and tangent point parameters. Note that all of these parameters assume straight line paths (i.e. no atmospheric refraction)

Parameters:

  • tangent_altitude_m (float) – Tangent altitude in [m]

  • relative_azimuth (float) – Relative azimuth angle to the sun. An angle of 0 degrees corresponds to the forward scattering plane. [rad]

  • observer_altitude_m (float) – Observer altitude relative to the earth [m]

  • cos_sza (float) – Cosine of the solar zenith angle at the tangent point [unitless]

class sasktran2.GroundViewingSolar(self: sasktran2._core.GroundViewingSolar, cos_sza: float, relative_azimuth: float, cos_viewing_zenith: float, observer_altitude_m: float)#

Bases: ViewingGeometryBase

Defines a viewing ray that is looking at the ground from angles defined at the ground location. Note that all of these parameters assumes straight line paths (i.e. no atmospheric refraction)

Parameters:

  • cos_sza (float) – Cosine of solar zenith angle at the ground point [unitless]

  • relative_azimuth (float) – Relative azimuth angle to the sun [rad] at the ground point. An angle of 0 degrees corresponds to the forward scattering plane.

  • observer_altitude_m (float) – Observer altitude relative to the earth [m]

  • cos_viewing_zenith (float) – Cosine of the viewing zenith angle at the ground point [unitless]

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