The dataset contains temperature, salinity, oxygen saturation, chlorophyll A and turbidity data from the AWIPEV underwater observatory from the year 2015 in a temporal resolution of 1 hour. The cabled observatory is located in 12m water depth and comprises single or multiple sensors for a specific parameter (see https://www.awi.de/en/science/biosciences/shelf-sea-system-ecology/main-research-focus/cosyna/underwater-node-spitsbergen.html) For a detailed description of the data see associated metadatafile "metadata_svulobs_2015_hydrography.pdf"