This dataset comprises measurements from a moored single-point acoustic current meter, collected by the Mooring Dirigibile Italia (MDI), which is managed by the Institute of Polar Sciences of the National Research Council (CNR). The data was gathered at Kongsfjorden, Svalbard Island, between 10 September 2010 and 29 August 2023. This dataset is also part of the SIOS-Svalbard Integrated Arctic Earth Observing System, developed to observe the impacts of climate change, including the rapid loss of sea ice cover, the retreat of local glaciers, and the Atlantification of Arctic seas. Measured properties are: subsurface temperature and subsurface currents. The acquisition of this time series data is still ongoing and will continue, bolstered by the inclusion of this infrastructure within the framework of the Italian PNRR project ITINERIS. This ensures sustained data collection and further enhances our understanding of the observed environmental changes.

DOC fractionation: dynamic of POPs and trace metals Arctic DOC (ArcticDOC) The sampling design is projected to cover almost five sampling points in the Kongsfjorden. The sampling of surface water (approximately 100 liters for each sampling point) and sediment are aimed at the determination of persistent and emerging contaminants: POPs PFAS, CUPs, PPCPs, endocrine disruptors such as nonylphenols and bisphenol A. At the same time, with tangential-flow ultrafiltration, dissolved organic matter (DOM) will be characterized according to size fractions (colloidal and truly dissolved) and the distribution of contaminants associated to these fractions will be evaluated.

Time series acquisition of Water temperature at mooring station MDI by SBE56 self-recording Temperature sensor. Time and spatial scale: 10 min, fixed depth 62 m, 40 m above sea bottom Parameters: Depth water, Depth, (m) Temperature, water; Temp, (C).

Permafrost Release Into The Marine System In A Warming Arctic (PRIMA) Data about Physical and chemical oceanography and vertical fluxes of sedimentary material from Mooring Aldo Pontremoli (MAP) and geochemical biomarker data from sediment core. Instrument: SBE56, SBE37, Sediment trap Technicap PPS 4/3, GC-MS

The dataset consist of 5 water column profiles of pressure, temperature, salinity, fluorescence and turbidity. at Platform: MS Teisten - Kings Bay AS .

The dataset consist of 34 water column profiles of pressure, temperature, salinity, fluorescence and turbidity mostly located on one the main transect along the fjord axis Platform: MS Teisten - Kings Bay AS .

The dataset consist of 41 water column profiles of pressure, temperature, salinity, fluorescence and turbidity. at Platform: MS Teisten - Kings Bay AS

This proposal will focus on eutrophication, contaminants, marine litter and underwater noise descriptors of the MSFD. Vertical acquisition in 18 CTD station in Kongsfjorden with water sampling at 2-3 depths (surface, intermediate, bottom) for nutrient and pH analyses of sampled water in the lab

Time series of marine particles fluxes and its compositions (Time and spatial scale: 15-90 days, fixed depth 83 m, 17 m above bottom). Flux of total mass, TMF, (g m-2 day-1) - Organic Carbon, OC, (per cent) - Calcium carbonate,CaCO3, (per cent) - Biogenic silica, Opal, (per cent) - Lithogenic material, Litho, (per cent) - Delta 13C, d13C, (per mil)

The dataset consist of 42 water column profiles of pressure, temperature, salinity, fluorescence and turbidity located within the Kongsfjorden at Platform: MS Teisten - Kings Bay AS