spectral_radSurfaceBlackbody

Workspace.spectral_radSurfaceBlackbody(self, spectral_rad: StokvecVector = self.spectral_rad, spectral_rad_jac: StokvecMatrix = self.spectral_rad_jac, freq_grid: AscendingGrid = self.freq_grid, surf_field: SurfaceField = self.surf_field, jac_targets: JacobianTargets = self.jac_targets, ray_point: PropagationPathPoint = self.ray_point) → None

Set surface spectral radiance from Planck function of the surface temperature.

\[\begin{split}\vec{I} = \left[ \begin{array}{c} \frac{2h\vec{\nu}^3}{c^2} \frac{1}{e^{\frac{h\vec{\nu}}{kT_s}} - 1} \\ 0 \\ 0 \\ 0 \end{array}\right],\end{split}\]

where \(T_s\) is the surface temperature extracted at the input ray_point. \(\nu\) is the frequency grid.

Author: Richard Larsson

Parameters:

• spectral_rad (~pyarts3.arts.StokvecVector, optional) – A spectral radiance vector. Defaults to self.spectral_rad. [OUT]

• spectral_rad_jac (~pyarts3.arts.StokvecMatrix, optional) – Jacobian of spectral_rad with respect to jac_targets. Defaults to self.spectral_rad_jac. [OUT]

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

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

• jac_targets (~pyarts3.arts.JacobianTargets, optional) – A list of targets for the Jacobian Matrix calculations. Defaults to self.jac_targets. [IN]

• ray_point (~pyarts3.arts.PropagationPathPoint, optional) – A single path point. Defaults to self.ray_point. [IN]