ACPD Atmospheric Chemistry and Physics Discussions ACPD 1680-7375 Copernicus GmbH Göttingen, Germany 10.5194/acpd-5-1319-2005 Technical note: The libRadtran software package for radiative transfer calculations – description and examples of use Mayer B. 1 Kylling A. 2 3 Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Physik der Atmosphäre, Oberpfaffenhofen, Germany St. Olavs Hospital, Trondheim University Hospital, Norway previously at: Norwegian Institute for Air Research (NILU), Kjeller, Norway 09 03 2005 5 2 1319 1381 This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://www.atmos-chem-phys-discuss.net/5/1319/2005/acpd-5-1319-2005.html The full text article is available as a PDF file from http://www.atmos-chem-phys-discuss.net/5/1319/2005/acpd-5-1319-2005.pdf

The libRadtran&nbsp;software package is a suite of tools for radiative transfer calculations in the Earth's atmosphere. Its main tool is the uvspec program. It may be used to compute radiances, irradiances and actinic fluxes in the solar and terrestrial part of the spectrum. The design of uvspec allows simple problems to be easily solved using defaults and included data, hence making it suitable for educational purposes. At the same time the flexibility in how and what input may be specified makes it a powerful and versatile tool for research tasks. The uvspec tool and additional tools included with libRadtran&nbsp;are described and realistic examples of their use are given. The libRadtran&nbsp;software package is available from same <TT><A NAME="tex2html1" HREF="http://www.libradtran.org">http://www.libradtran.org</A></TT>.