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CTD raw data files from POLARSTERN cruise PS121, link to tar-archive (2020)

Metfies, Katja ; Rohardt, Gerd

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In: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven

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Publikationsdatum: 2023-05-31

Schlagwort(e): AWI_PhyOce; CT; Physical Oceanography @ AWI; Polarstern; PS121; PS121-track; Underway cruise track measurements

Materialart: Dataset

Format: application/x-tar, 278.6 MBytes

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Raw physical oceanography, bio-optical and biogeochemical data from mooring HG-IV-S-4 in the Fram Strait, August 2019 - June 2021 (2023)

Hoppmann, Mario ; von Appen, Wilken-Jon ; Barz, Jakob ; [weitere]

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Publikationsdatum: 2024-04-30

Beschreibung: Time-series data of physical & biological oceanography, nutrient biogeochemistry and molecular biology were obtained from mooring HG-IV-S-4 in the Fram Strait in August 2019 - June 2021 as part of the Helmholtz infrastructure program Frontiers in Arctic Marine Monitoring (FRAM) and the long-term monitoring program at AWI HAUSGARTEN. The mooring was deployed during RV POLARSTERN expedition PS121, and recovered during PS126. The attached archive contains raw data files of three Seabird SBE37 microcats (nominal depths: 18m, 23m, 47m; sampling interval 1h), two Seabird SBE56 temperature loggers (nominal depths: 28m, 38m; sampling interval 30s), one Wetlabs ECO Triplet fluorometer (nominal depth: 23m; sampling interval 2h) and one Wetlabs ECO PAR sensor (nominal depth: 23m; sampling interval 2h). One ISUS nitrate sensor (nominal depth: 23m) was flooded and no data is available. The mooring also included a McLane RAS water sampler (nominal depth: 23m) and a McLane PPS phytoplankton sampler (nominal depth: 25m). Auxiliary information such as sensor calibration sheets, mooring diagrams and schedule files are also provided, if applicable.

Schlagwort(e): Arctic Ocean; AWI_PhyOce; Binary Object; Binary Object (File Size); CTD; File content; FRAM; Fram Strait; FRontiers in Arctic marine Monitoring; GPF 20-1_021; Hausgarten; HG-IV-S-4; Long-term Investigation at AWI-Hausgarten off Svalbard; molecular biology; MOOR; Mooring; North Greenland Sea; nutrient biogeochemistry; oceanographic moorings; oceanographic time series; Physical Oceanography @ AWI; Polarstern; PS121; PS121_26-2; PS121_26-2,PS126_3-4; PS126; PS126_3-4

Materialart: Dataset

Format: text/tab-separated-values, 2 data points

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Natural variability or anthropogenically-induced variation? Insights from 15 years of multidisciplinary observations at the arctic marine LTER site HAUSGARTEN (2018)

Soltwedel, Thomas ; Bauerfeind, Eduard ; Bergmann, Melanie ; [weitere]

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Publikationsdatum: 2021-03-29

Beschreibung: Time-series studies of arctic marine ecosystems are rare. This is not surprising since polar regions arelargely only accessible by means of expensive modern infrastructure and instrumentation. In 1999, theAlfred Wegener Institute, Helmholtz-Centre for Polar and Marine Research (AWI) established the LTER(Long-Term Ecological Research) observatory HAUSGARTEN crossing the Fram Strait at about 79◦N.Multidisciplinary investigations covering all parts of the open-ocean ecosystem are carried out at a totalof 21 permanent sampling sites in water depths ranging between 250 and 5500 m. From the outset,repeated sampling in the water column and at the deep seafloor during regular expeditions in summermonths was complemented by continuous year-round sampling and sensing using autonomous instru-ments in anchored devices (i.e., moorings and free-falling systems). The central HAUSGARTEN stationat 2500 m water depth in the eastern Fram Strait serves as an experimental area for unique biologicalin situ experiments at the seafloor, simulating various scenarios in changing environmental settings.Long-term ecological research at the HAUSGARTEN observatory revealed a number of interesting tem-poral trends in numerous biological variables from the pelagic system to the deep seafloor. Contrary tocommon intuition, the entire ecosystem responded exceptionally fast to environmental changes in theupper water column. Major variations were associated with a Warm-Water-Anomaly evident in sur-face waters in eastern parts of the Fram Strait between 2005 and 2008. However, even after 15 years ofintense time-series work at HAUSGARTEN, we cannot yet predict with complete certainty whether thesetrends indicate lasting alterations due to anthropologically-induced global environmental changes of thesystem, or whether they reflect natural variability on multiyear time-scales, for example, in relation todecadal oscillatory atmospheric processes.

Schlagwort(e): HAUSGARTEN; Arctic Ocean; Deep sea; Natural variability; Anthropogenic impact ; 551

Sprache: Englisch

Materialart: article , publishedVersion

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