The first part of the workshop will consist of review talks by experts on data assimilation, modern and paleo reanalyses, and on the comparison of model results and different types of data (over land and in the oceans) using models representing directly the observed variables. Some discussions will be planned to identify the main issues to be solved and the best opportunities for the coming years.
In the second part, training will be provided, including some practical activities on computers using proxy system models and simple data assimilation routines. Code repositories currently exist and workshop participants will be encouraged to deposit a versioned code on such repositories to facilitate joined activities, to encourage new users to develop applications and stimulate collaborations. This will be achieved in preparation for the workshop and as a legacy of the activity. This second part mainly targets young scientists and senior scientists who do not have experience yet in the domain, but would like to apply some of the techniques in their work.