Published May 30, 2015 | Version 4.0
Software Open

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

  • 1. LMU Munich
  • 2. DLR Oberpfaffenhofen; RASCIN Munich


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)


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Is supplement to
Journal article: 10.5194/acp-15-5947-2015 (DOI)