projects and initiatives including ICES, SCOR, OSPAR and LTER North Sea time series Arctic time series AWI biological time series locations in the Arctic, North Sea and Antarctic Further information LTER-D [...] LTER time series in the North Sea, Arctic and Antarctic The analysis of long-term ecological patterns and changes is a further focus of AWI’s LTO activities and long-term data sets exist for almost every [...] sensor deployments and molecular methods. The most extensive data resources are available in our North Sea observatory. Further important time series are operated in the arctic observatory Hausgarten. Our time