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  • Arctic  (1)
  • Author(s); AWI_PhyOce; Campaign; Date/time end; Date/time start; Method comment; Number of observations; Ocean and sea region; Persistent Identifier; Physical Oceanography @ AWI; Principal investigator; Quality code; Uniform resource locator/link to image; Uniform resource locator/link to reference  (1)
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Years
  • 1
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    Physical oceanography on board of POLARSTERN (1983-11-22 to 2016-02-14) (2016)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven | Supplement to: Driemel, Amelie; Fahrbach, Eberhard; Rohardt, Gerd; Beszczynska-Möller, Agnieszka; Boetius, Antje; Budéus, Gereon; Cisewski, Boris; Engbrodt, Ralph; Gauger, Steffen; Geibert, Walter; Geprägs, Patrizia; Gerdes, Dieter; Gersonde, Rainer; Gordon, Arnold L; Grobe, Hannes; Hellmer, Hartmut H; Isla, Enrique; Jacobs, Stanley S; Janout, Markus A; Jokat, Wilfried; Klages, Michael; Kuhn, Gerhard; Meincke, Jens; Ober, Sven; Østerhus, Svein; Peterson, Ray G; Rabe, Benjamin; Rudels, Bert; Schauer, Ursula; Schumacher, Stefanie; Schröder, Michael; Sieger, Rainer; Sildam, Jüri; Soltwedel, Thomas; Stangeew, Elena; Stein, Manfred; Strass, Volker H; Thiede, Jörn; Tippenhauer, Sandra; Veth, Cornelis; von Appen, Wilken-Jon; Weirig, Marie-France; Wisotzki, Andreas; Wolf-Gladrow, Dieter A; Kanzow, Torsten (2017): From pole to pole: 33 years of physical oceanography onboard R/V Polarstern. Earth System Science Data, 9(1), 211-220, https://doi.org/10.5194/essd-9-211-2017
    Details
    Publication Date: 2023-10-18
    Description: Measuring temperature and salinity profiles in the world's oceans is crucial to understanding ocean dynamics and its influence on the heat budget, the water cycle, the marine environment and on our climate. Since 1983 the German research vessel and icebreaker Polarstern has been the platform of numerous CTD (conductivity, temperature, depth instrument) deployments in the Arctic and the Antarctic. We report on a unique data collection spanning 33 years of polar CTD data. In total 131 data sets (1 data set per cruise leg) containing data from 10 063 CTD casts are now freely available. During this long period five CTD types with different characteristics and accuracies have been used. Therefore the instruments and processing procedures (sensor calibration, data validation, etc.) are described in detail. This compilation is special not only with regard to the quantity but also the quality of the data - the latter indicated for each data set using defined quality codes. The complete data collection includes a number of repeated sections for which the quality code can be used to investigate and evaluate long-term changes. Beginning with 2010, the salinity measurements presented here are of the highest quality possible in this field owing to the introduction of the OPTIMARE Precision Salinometer.
    Keywords: Author(s); AWI_PhyOce; Campaign; Date/time end; Date/time start; Method comment; Number of observations; Ocean and sea region; Persistent Identifier; Physical Oceanography @ AWI; Principal investigator; Quality code; Uniform resource locator/link to image; Uniform resource locator/link to reference
    Type: Dataset
    Format: text/tab-separated-values, 1695 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Structure and variability of the shelfbreak East Greenland Current north of Denmark Strait (2017)
    American Meteorological Society
    Details
    Publication Date: 2022-05-26
    Description: Author Posting. © American Meteorological Society, 2017. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 47 (2017): 2631-2646, doi:10.1175/JPO-D-17-0062.1.
    Description: Data from a mooring array deployed north of Denmark Strait from September 2011 to August 2012 are used to investigate the structure and variability of the shelfbreak East Greenland Current (EGC). The shelfbreak EGC is a surface-intensified current situated just offshore of the east Greenland shelf break flowing southward through Denmark Strait. This study identified two dominant spatial modes of variability within the current: a pulsing mode and a meandering mode, both of which were most pronounced in fall and winter. A particularly energetic event in November 2011 was related to a reversal of the current for nearly a month. In addition to the seasonal signal, the current was associated with periods of enhanced eddy kinetic energy and increased variability on shorter time scales. The data indicate that the current is, for the most part, barotropically stable but subject to baroclinic instability from September to March. By contrast, in summer the current is mainly confined to the shelf break with decreased eddy kinetic energy and minimal baroclinic conversion. No other region of the Nordic Seas displays higher levels of eddy kinetic energy than the shelfbreak EGC north of Denmark Strait during fall. This appears to be due to the large velocity variability on mesoscale time scales generated by the instabilities. The mesoscale variability documented here may be a source of the variability observed at the Denmark Strait sill.
    Description: Support for this work was provided by the Norwegian Research Council under Grant Agreement 231647 (LH and KV) and the Bergen Research Foundation under Grant BFS2016REK01 (KV). Additional funding was provided by the National Science Foundation under Grants OCE-0959381 and OCE-1558742 (RP).
    Keywords: Ocean ; Arctic ; Boundary currents ; Currents ; Stability ; Oceanic variability
    Repository Name: Woods Hole Open Access Server
    Type: Article
    Location Call Number Limitation Availability
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    PAPER (OA)
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