International Polarized Radiative Transfer

This case includes the same setup as case D1 but including an ocean surface (reflectance matrix).

Setup:

• Ocean reflectance matrix by Mishchenko's code ocean.shadow.f (uses anti-clockwise convention for azimuth angle!)
• refractive index of water (1.33 + 0i)
• mean surface slope, according to Eq. 18 in Mishchenko and Travis 1997:

σ^2 = 0.5 * (0.003 + 0.00512 * w), where w is the wind speed

• wind speed 2m/s
• scattering optical thickness (Rayleigh) of layer: 0.1
• no molecular absorption
• Rayleigh depolarization factor: 0.03
• Earth radius: 6371 km
• Thickness of layer: 120 km

• Sun-observer geometries as defined in general settings:
  • viewing zenith angles (deg): [0, 9, 18, 26, 34, 41, 48, 54, 60, 65, 70, 74, 78, 81, 84, 86, 88, 89, 90] (up-looking at bottom of atmosphere, down-looking at top of atmosphere]
  • viewing azimuth angles (deg): 0-180, 10° increment
  • solar zenith angles (deg): [30, 60, 80, 87, 90, 93, 96, 99]
  • solar azimuth angle (deg): 0
  • sensor altitude (km): 0, 120