Emissions

Emission objects provide the radiance emitted at locations in the atmosphere. They are created using the ISKEmission class.

Overview

Emission objects within the sasktranif framework have the following peculiarities:

• They provide the signal as a radiance per steradian rather than volume emission rate. This introduces a factor of \(4\pi\).

• They provide the signal as photons per nanometer rather than photons per wavenumber. This will introduce a factor of \(\frac{\nu^2}{10^7}\) to calculation primarily based upon wavenumber.

Emission	Extension	Description
THERMAL	sasktran_core	Simple planck black body.
USERDEFINED_WAVELENGTHHEIGHT	sasktran_core	User defined 2D array of emission, wavelength vs. height.
HITRAN_PHOTOCHEMICAL	sasktran_core	Photo-chemical emissions using the Hitran database

• THERMAL
  • Example
  • Sasktran Availability
  • Properties
• USERDEFINED_WAVELENGTHHEIGHT
  • Example
  • Properties
• HITRAN_PHOTOCHEMICAL
  • Usage
  • Sasktran Support
  • Theoretical Overview
  • Hitran Fields