Aerosol Look-up Table Generator (ALG) v2.0 - Release Notes

This section describes the release notes of ALG v2.0, which is the first version publically released on xx/06/2018.

Additions

    • The following atmospheric RTMs are compatible with ALG v2.0: MODTRAN v5, MODTRAN v5, 6SV v2.1 (scalar version) and libRadtran v2.0.2.
    • The OPAC aerosol database is also compatible with ALG v2.0 and coupled with MODTRAN v5, MODTRAN v6 and libRadtran v2.0.2.
    • The Aerosol Toolkit (ATK) has been improved. It now allows:
      • Cross-definition of aerosol optical properties from 6SV to MODTRAN5 and MODTRAN6.
      • Storing user-defined OPAC aerosols as MODTRAN and 6SV aerosols.
      • Use or log-normal and gamma particle-size distributions for definition of aerosols in 6SV.
    • ALG includes and additional option for LUT node distribution:
      • Load node distribution from a pre-calculated LUT.
    • The 4-streams MODTRAN interrogation technique from Verhoef and Bach 2012 has been included as an advanced configuration parameter for MODTRAN5 and MODTRAN6.
    • MODTRAN gaseous transmittance mode is now compatible with ALG. LUTs generated with this mode contain gaseous transmittance for each MODTRAN gas species.

Fixed errors

    • ALG now permits to have a single user-input value of the Solar Zenith Angle.

Changes

    • LUT header information is now stored in the same hdf5 file as the LUT output data (i.e., atmospheric transfer functions).