Why open source?
It is our belief that software improves when more people use and develop it. Therefore, LOTOS-EUROS is made available for free in an Open Source version.

This open source version is based on LOTOS-EUROS v2.0 and contains all functionality described in the v2.0 Reference Guide. For the use of additional functionality specific arrangements with TNO can be made.

On 12 January the first introduction workshop was held at TNO Utrecht.
Depending on the number of new people interested in the model the same type of workshop may be scheduled around summer 2017.

Computing environment
Be aware: LOTOS-EUROS is written in Fortran and is designed for Unix/Linux platforms, with Python scripts to handle compilation. Input and output data take 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, climatological boundary conditions).

The newest version of the TNO MACC emissions for Europe can be made available at request under different conditions. To obtain these data we refer to the form on the MACC website.

Community portal
The use of the LOTOS-EUROS Open Source version is regulated using a community site.

Access to the model community site includes access to the source code, a test bed with input data and verification output, a wiki, and a user forum. Alerts can be sent when model updates are available.

To obtain access to the community you have to accept the conditions under which the code is made available using the form below.

Agreement Form
By providing the information requested below and using the LOTOS-EUROS open source version, you indicate your acceptance of the LOTOS-EUROS open source license agreement. After receiving your information, TNO will proceed to grant access to the model community site and inform you when you have been added to the system.

[ Different Image ]
(Processing of the request might take 1-2 days)