sunFromGrid

Workspace.sunFromGrid(self, sun: Sun = self.sun, freq_grid: AscendingGrid = self.freq_grid, lat: Numeric = self.lat, lon: Numeric = self.lon, sun_spectrum_raw: GriddedField2, radius: Numeric = 696324200, distance: Numeric = 149597870700, temperature: Numeric = 5772, description: String = A sun) → None

Extracts a sun spectrum from a field of such data.

The method allows to obtain the sun spectrum by interpolation from a field of such data. The sun spectrum is expected to be stored as the irradiance at the suns photosphere.

Unit:

  • GriddedField2: [W m-2 Hz-1]

  • Vector freq_grid [Hz]

  • Vector stokes_dim [1]

Dimensions: [freq_grid, stokes_dim]

This method performs an interpolation onto the freq_grid. The point of freq_grid that are outside the data frequency grid are initialized according to planck’s law of the temperature variable. Hence, a temperature of 0 means 0s the edges of the freq_grid.

Authors: Jon Petersen, Richard Larsson

Parameters:

  • sun (~pyarts3.arts.Sun, optional) – A sun. Defaults to self.sun. [OUT]

  • freq_grid (~pyarts3.arts.AscendingGrid, optional) – A frequency grid. Unit: Hz. Defaults to self.freq_grid. [IN]

  • lat (~pyarts3.arts.Numeric, optional) – A single latitude. Defaults to self.lat. [IN]

  • lon (~pyarts3.arts.Numeric, optional) – A single longitude. Defaults to self.lon. [IN]

  • sun_spectrum_raw (GriddedField2) – A raw spectrum. [IN]

  • radius (~pyarts3.arts.Numeric, optional) – The radius of the sun in meter. Default is the radius of our sun. . Defaults to 696324200 [IN]

  • distance (~pyarts3.arts.Numeric, optional) – The average distance between the sun and the planet in meter. Default value is set to 1 a.u. . Defaults to 149597870700 [IN]

  • temperature (~pyarts3.arts.Numeric, optional) – The effective temperature of the suns photosphere in Kelvin. Default is the temperature of our sun - 5772 Kelvin . Defaults to 5772 [IN]

  • description (~pyarts3.arts.String, optional) – A description of the sun. Defaults to "A sun" [IN]