With this option the directory is specified where the optical property files for all aerosols species used in the aerosol_species_file are expected: For each species defined in aerosol_species_file, netCDF-file species_name.nc, (e.g. INSO.nc), which contains the optical properties of the aerosol species, has to be provided. The netcdf format is the one produced by the libRadtran mie tool.
At the libRadtran webpage we provide the OPAC data set (Hess et al., 1998) which can be directly used with uvspec:
aerosol_species_library OPACOPAC contains following aerosol species:
INSO # insoluble WASO # water_soluble SOOT # soot SSAM # sea_salt_accumulation_mode SSCM # sea_salt_coarse_mode MINM # mineral_nucleation_mode MIAM # mineral_accumulation_mode MICM # mineral_coarse_mode MITR # mineral_transported SUSO # sulfate_droplets