Software Open Access

Optical Properties of Aerosols and Clouds (OPAC) 4.0 software and data package

Koepke, Peter; Gasteiger, Josef; Hess, Michael

This package provides version 4.0 of OPAC as described by Koepke, P., Gasteiger, J., and Hess, M.: Technical Note: Optical properties of desert aerosol with non-spherical mineral particles: data incorporated to OPAC, Atmos. Chem. Phys., 15, 5947–5956,, 2015. 

The original software and data package was available for download at since 30/05/2015.

Sadly, the maintainer of this website and co-author of OPAC, Michael Hess, is no longer among us and was shut down.

The package provided here is a repacked version of OPAC 4.0 where only the archive format was changed.

Packaged by Josef Gasteiger (02/11/2022) - E-Mail: contact(at)

Files (1.0 MB)
Name Size
1.0 MB Download
All versions This version
Views 2222
Downloads 11
Data volume 1.0 MB1.0 MB
Unique views 1616
Unique downloads 11


Cite as