Open Source Version
It is our belief that a model is improved when more people use and develop it. In line with this vision, LOTOS-EUROS has been made available without charge in an open-source version. This open-source version is based on LOTOS-EUROS v2.3 and contains all functionality described in the v2.3 Reference Guide. Additional functionality can be added in consultation with TNO.
For more information: contact lotos-euros-info@tno.nl with 'Open Source' in the subject.
Workshop
An international user workshop on the open source version of LOTOS-EURO is held every year. Experienced users, new users and potential users share their results and interests in an informal setting. The 2025 workshop is planned on January 29 & 30, 2025 at TNO Utrecht. The programme is available in the information leaflet.
Computing Environment
Please note that LOTOS-EUROS is written in Fortran and is designed for Unix/Linux platforms, with Python scripts to handle compilation. Input and output data take up considerable space.
Input data
The open-source version does not include meteorological fields to drive the model, but does provide static input (emissions and time profiles, land use and climatological boundary conditions).
The latest set of emission data for Europe developed by TNO for use in the EU MACC (Monitoring Atmospheric Composition and Climate) project can be made available in various forms on request. The data can be downloaded from ECCAD (sedoo.fr)
Code availability
The use of the LOTOS-EUROS open-source version is regulated via registration. To gain access to the code and example data you can request access using the online form.
You will receive the login details for a GitLab account, where you can download the code, and an FTP account, where you can download input data (emissions, time profiles, land use, boundary conditions).