International Polarized Radiative Transfer

In this case it shall be tested whether the coupling between model layers is correctly included.

Setup:

• model atmosphere with 30 layers, optical thicknesses provided in tau_rayleigh_450.dat. The file includes 2 columns where the first is the altitude of the layer boundaries in km, and the second is the layer optical thickness (e.g. the value for 0 km corresponds to the optical thickness for the layer from 0 to 1 km).
• wavelength: 450 nm
• no molecular absorption
• Rayleigh depolarization factor: 0.03
• surface albedo: 0

• output altitudes: 0 km, 1 km, 30 km
• sun position (sza=60°, saa=0°)
• viewing zenith angles:
  • at 0 km : vza: 0° - 85°, 5° increment
  • at 1 km: vza: 0° - 180°, 5° increment (without 90°)
  • at 30 km: vza: 95° - 180°, 5° increment
• viewing azimuth angle vaa: 0° - 180°, 5° increment

Output format:

• The output should be provided in the same format as for case A1 (Rayleigh scattering).

Difference plots between the models IPOL, 3DMCPOL, SPARTA (previously named TROPOS), SHDOM, PSTAR and MYSTIC for the full radiation field:
3DMCPOL
IPOL
SPARTA
SHDOM
PSTAR

Data of all models (MYSTIC and 3DMCPOL include also standard deviation):
MYSTIC
3DMCPOL
IPOL
SPARTA
SHDOM
PSTAR