Software Open Access

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

Koepke, Peter; Gasteiger, Josef; Hess, Michael

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<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="" xmlns:oai_dc="" xmlns:xsi="" xsi:schemaLocation="">
  <dc:creator>Koepke, Peter</dc:creator>
  <dc:creator>Gasteiger, Josef</dc:creator>
  <dc:creator>Hess, Michael</dc:creator>
  <dc:description>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)</dc:description>
  <dc:subject>Aerosol optical properties</dc:subject>
  <dc:subject>Cloud optical properties</dc:subject>
  <dc:subject>Mineral dust</dc:subject>
  <dc:title>Optical Properties of Aerosols and Clouds (OPAC) 4.0 software and data package</dc:title>
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