libRadtran - library for radiative transfer - is a collection of C and Fortran functions and programs for calculation of solar and thermal radiation in the Earth's atmosphere. libRadtran is freely available under the GNU General Public License.
Authors: Bernhard Mayer, Claudia Emde, Josef Gasteiger, and Arve Kylling
Newest release: 2.0.5 from July 25, 2023.