Challenges to implement an open, free, participative gravity-modelling initiative

In January 2024, our team has launched an open, free, participative gravity-modelling initiative. The idea is to provide all the necessary, pre-processed input data to the community, so that modelling and inversion can be applied by anyone interested in constraining the shape of a geological-geophysical anomaly. This way we hope to step over hurdles related to personal biases. The full description can be found at https://zenodo.org/records/10390437 Beyond advertising the initiative, we would like to share some thoughts on the pathway to launching it: the motivation, the interest, the experienced past difficulties and further challenges on the horizon. By doing so, we hope to contribute to the goals of this session, and to foster further such (scientific and sharing) initiatives.