intercomparisons:b3_aerosol
Case B3: Aerosol profile
This test case includes a standard atmosphere with Rayleigh scattering and molecular absorption (as case B2). Aerosol with a specified optical thickness profile is added. The aerosol optical properties are the same as in case A4 (spheroidal particles)
Setup:
- model atmosphere with 30 layers, scattering optical thicknesses provided in tau_rayleigh_350.dat, absorption optical thickness in tau_molabs_350.dat
- wavelength: 350 nm
- Rayleigh depolarization factor: 0.03
- surface albedo: 0
- aerosol optical thickness profile: tau_aerosol.dat
- aerosol optical properties: netCDF,ascii
The variable “phase” includes the phase matrix, as a function of the scattering angle (variable “theta”). The 4×4 scattering phase matrix for spheroidal droplets has six non-zero elements, which are stored in the following order: $ P = \begin{pmatrix} P1 & P2 & 0 & 0 \\ P2 & P5 & 0 & 0 \\ 0 & 0 & P3 & P4 \\ 0 & 0 & -P4 & P6 \end{pmatrix} $
The corresponding Legendre polynomials (“pmom”) and the single scattering albedo (“ssa”) are also included in the file.
- output altitudes: 0 km, 1 km, 30 km
- sun position (sza=30°, 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).
Results
intercomparisons/b3_aerosol.txt · Last modified: by 127.0.0.1