The variable PARTYPE defines the particle types used as components of the user-defined OPAC aerosol model (AERTYPE), thus allowing users to introduce additional user-defined aerosols based on the versatility offered by OPAC. The available aerosol components are shown in the Table below together with their minimum/maximum and default number-density values in cm-3:
Aerosol type name | Default | Min-Max |
---|---|---|
Insoluble |
0.4 | 0.005-3 |
Water-soluble |
7000 | 300-60000 |
Soot |
8300 | 2500-300000 |
Sea salt (acc. mode) |
20 | 0.25-40 |
Sea salt (coa. mode) |
0.003 | 0.0005-0.006 |
Mineral (nuc. mode) |
270 | 100-500 |
Mineral (acc. mode) |
20 | 15-60 |
Mineral (coa. mode) |
0.15 | 0.05-0.3 |
Mineral (transported) |
0.05 | 0.02-0.1 |
Sulfate |
40 | 20-80 |
Note that a maximum of 5 different aerosol components can be selected to define a new aerosol type.
Further information about these aerosol parameters and refractive indices can be found in (Hess et al., 1998) and (Koepke et al., 2015).
Hess, M., Koepke, P., & Schult, I. (1998), "Optical properties of aerosols and clous: the software package OPAC." Bulletin of the Americal Meteorologic Soctiety. Vol. 79, No. 5, pp. 831‒ 844.
Koepke, P., Gasteiger, J., & Hess (2015), "Technical Note: Optical properties of desert aerosol with non-spherical mineral particles data incorporated to OPAC." Atmos. Chem. Phys.. Vol. 15, No. 5, pp. 5947‒ 5946.