Dear Colleagues, you receive this eMail because you are either a user of the radiative transfer package libRadtran or because we think that you might be interested in this information. Should you not be interested in receiving further information, please let us know. Attached to this eMail is the 19th libRadtran Newsletter. The main issue of this Newsletter is to announce the new version, *** libRadtran 2.0.4 *** which includes some improvements and bug fixes compared to version 2.0.3 And with that we wish you all a Merry Christmas and a happy and successful new year! Bernhard Mayer, Claudia Emde, Arve Kylling, and Josef Gasteiger. /*---------------------------------------------------------------- * libRadtran Newsletter No. 19 * * December 24, 2020 * * Bernhard Mayer (bernhard.mayer_at_lmu.de) * Claudia Emde (claudia.emde_at_lmu.de) * Arve Kylling (arve.kylling_at_gmail.com) * Josef Gasteiger (josef.gasteiger_at_univie.ac.at) * * ### More info: http://www.libradtran.org ### *----------------------------------------------------------------*/ Dear libRadtran users, what a year! I hope you are all doing well, despite the things going on! We libRadtran people were comparatively lucky, except for the fact that for example we at Munich University have been working from home since March. It's my 190th working-from-home-day today, and we are definitely looking forward to being able to go back to work and meet our colleagues again. And we hope to meet you again, in a not too far away future, e.g. at the postponed International Radiation Symposium 2020! In an attempt to continue an old tradition, a new libRadtran version is released as a Christmas gift. The change in version number is not that big, and the changes are neither. There are some new features and bug fixes. To be honest, the main reason for this release is that GMD requires us to make to the twomaxrnd and twomaxrnd3C radiative transfer solvers public because otherwise they would not publish our paper. Here we are! *** Changes: - New approximate solvers: the tripleclouds solver "twomaxrnd3C". Check out the documentation and the detailed descriptions in Crnivec and Mayer, ACP, 2019, 2020. - Minor bug fixes *** Reminders: * For simulations with clouds and/or aerosols we strongly recommend to get the additional optical properties data from the Download area, which are much more accurate than the defaults, in particular for radiance simulations. And now, have fun!