The session was one of the largest in the conference comprising 34 oral presentations, split into three 3-hour blocks, and 16 poster presentations. Presenters and attendees included a broad cross-section of practitioners in the field, from institutions in Europe, North America and Asia in early to senior career positions, also gathering many of Carl’s former and current collaborators.

“Carl has been instrumental in developing these wonderfully complex computer codes that allow integration of geochemical processes over time and space,” noted Eric Oelkers (KAUST). Pierre Regnier (Université Libre de Bruxelles) reminisced how Carl “guided him to apply complex reactive transport models to estuarine systems,” while Sue Brantley (Penn State) lauded “Carl’s receptiveness to ideas and work with [others] on ideas and [translating] them into models.”