atmosphere - sea-ice - ocean system; to study the history of the transpolar system. Contact: T. Soltwedel, J. Hölemann, R. Stein BIOACID III (Biological Impacts of Ocean ACIDification) Project funded by the [...] GEOMAR, Germany The overarching questions of BIOACID -Project are: What are the effects of ocean acidification on marine organisms and their habitats? What are the underlying mechanisms of responses and [...] GEOMAR, Germany Objectives of the TRANSDRIFT -Project are: to assess the influence of sea-ice and ocean dynamics in the Laptev Sea on the transpolar drift; to investigate changes in the arctic halocline