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  • PANGAEA  (59)
  • Copernicus Publications  (1)
  • EGU Copernicus  (1)
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  • 1
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    Raw data of SCADCP (self-contained Acoustic Doppler Current Profiler) from three moorings in the Eastern Weddell Sea in 2005
    PANGAEA
    In:  Supplement to: Cisewski, Boris; Strass, Volker H; Rhein, Monika; Krägefsky, Sören (2010): Seasonal variations of diel vertical migration of zooplankton from ADCP backscatter time series data in the Lazarev Sea, Antarctica. Deep Sea Research Part I: Oceanographic Research Papers, 57(1), 78-94, https://doi.org/10.1016/j.dsr.2009.10.005
    Details
    Publication Date: 2023-05-12
    Description: Ten-month time series of mean volume backscattering strength (MVBS) and vertical velocity obtained from three moored acoustic Doppler current profilers (ADCPs) deployed from February until December 2005 at 64°S, 66.5°S and 69°S along the Greenwich Meridian were used to analyse the diel vertical zooplankton migration (DVM) and its seasonality and regional variability in the Lazarev Sea. The estimated MVBS exhibited distinct patterns of DVM at all three mooring sites. Between February and October, the timing of the DVM and the residence time of zooplankton at depth were clearly governed by the day-night rhythm. Mean daily cycles of the ADCP-derived vertical velocity were calculated for successive months and showed maximum ascent and descent velocities of 16 and -15 mm/s. However, a change of the MVBS pattern occurred in late spring/early austral summer (October/November), when the zooplankton communities ceased their synchronous vertical migration at all three mooring sites. Elevated MVBS values were then concentrated in the uppermost layers (〈50 m) at 66.5°S. This period coincided with the decay of sea ice coverage at 64°S and 66.5°S between early November and mid-December. Elevated chlorophyll concentrations, which were measured at the end of the deployment, extended from 67°S to 65°S and indicated a phytoplankton bloom in the upper 50 m. Thus, we propose that the increased food supply associated with an ice edge bloom caused the zooplankton communities to cease their DVM in favour of feeding.
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Raw data of SCADCP (self-contained Acoustic Doppler Current Profiler) from three moorings in the Eastern Weddell Sea, 2005-2008 (2016)
    PANGAEA
    In:  Supplement to: Cisewski, Boris; Strass, Volker H (2016): Acoustic insights into the zooplankton dynamics of the eastern Weddell Sea. Progress in Oceanography, 144, 62-92, https://doi.org/10.1016/j.pocean.2016.03.005
    Details
    Publication Date: 2023-03-16
    Description: The success of any efforts to determine the effects of climate change on marine ecosystems depends on understanding in the first instance the natural variations, which contemporarily occur on the interannual and shorter time scales. Here we present results on the environmental controls of zooplankton distribution patterns and behaviour in the eastern Weddell Sea, Southern Ocean. Zooplankton abundance and vertical migration are derived from the mean volume backscattering strength (MVBS) and the vertical velocity measured by moored acoustic Doppler current profilers (ADCPs), which were deployed simultaneously at 64°S, 66.5°S and 69°S along the Greenwich Meridian from February, 2005, until March, 2008. While these time series span a period of full three years they resolve hourly changes. A highly persistent behavioural pattern found at all three mooring locations is the synchronous diel vertical migration (DVM) of two distinct groups of zooplankton that migrate between a deep residence depth during daytime and a shallow depth during nighttime. The DVM was closely coupled to the astronomical daylight cycles. However, while the DVM was symmetric around local noon, the annual modulation of the DVM was clearly asymmetric around winter solstice or summer solstice, respectively, at all three mooring sites. DVM at our observation sites persisted throughout winter, even at the highest latitude exposed to the polar night. Since the magnitude as well as the relative rate of change of illumination is minimal at this time, we propose that the ultimate causes of DVM separated from the light-mediated proximal cue that coordinates it. In all three years, a marked change in the migration behaviour occurred in late spring (late October/early November), when DVM ceased. The complete suspension of DVM after early November is possibly caused by the combination of two factors: (1) increased availability of food in the surface mixed layer provided by the phytoplankton spring bloom, and (2) vanishing diurnal enhancement of the threat from visually oriented predators when the illumination is quasi-continuous during the polar and subpolar summer. Zooplankton abundance in the water column, estimated as the mean MVBS in the depth range 50–300 m, was highest end of summer and lowest mid to end winter on the average annual cycle. However, zooplankton abundance varied several-fold between years and between locations. Based on satellite and in situ data of chlorophyll and sea ice as well as on hydrographic measurements, the interannual and spatial variations of zooplankton mean abundance can be explained by differences in the magnitude of the phytoplankton spring bloom, which develops during the seasonal sea ice retreat. Whereas the vernal ice melt appears necessary to stimulate the blooming of phytoplankton, it is not the determinator of the blooms magnitude, its areal extent and duration. A possible explanation for the limitation of the phytoplankton bloom in some years is top-down control. We hypothesise that the phytoplankton spring development can be curbed by grazing when the zooplankton had attained high abundance by growth during the preceding summer.
    Keywords: AWI_PhyOce; Physical Oceanography @ AWI
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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  • 3
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    Abundance, biomass, ingestion rates and daily ratios of Salpa thompsoni individuals sampled during POLARSTERN cruise ANT-XVIII/5b to the Eastern Belingshausen Sea (2015)
    PANGAEA
    In:  Supplement to: Pakhomov, Evgeny A; Dubischar, Corinna D; Strass, Volker H; Brichta, Mauricio; Bathmann, Ulrich (2006): The tunicate Salpa thompsoni ecology in the Southern Ocean. I. Distribution, biomass, demography and feeding ecophysiology. Marine Biology, 149(3), 609-623, https://doi.org/10.1007/s00227-005-0225-9
    Details
    Publication Date: 2023-10-28
    Description: Distribution, density, and feeding dynamics of the pelagic tunicate Salpa thompsoni have been investigated during the expedition ANTARKTIS XVIII/5b to the Eastern Bellingshausen Sea on board RV Polarstern in April 2001. This expedition was the German contribution to the field campaign of the Southern Ocean Global Ocean Ecosystems Dynamics Study (SO-GLOBEC). Salps were found at 31% of all RMT-8 and Bongo stations. Their densities in the RMT-8 samples were low and did not exceed 4.8 ind/m**2 and 7.4 mg C/m**2. However, maximum salp densities sampled with the Bongo net reached 56 ind/m**2 and 341 mg C/m**2. A bimodal salp length frequency distribution was recorded over the shelf, and suggested two recent budding events. This was also confirmed by the developmental stage composition of solitary forms. Ingestion rates of aggregate forms increased from 2.8 to 13.9 µg (pig)/ind/day or from 0.25 to 2.38 mg C/ind/day in salps from 10 to 40 mm oral-atrial length, accounting for 25-75% of body carbon per day. Faecal pellet production rates were on average 0.08 pellet/ind/h with a pronounced diel pattern. Daily individual egestion rates in 13 and 30 mm aggregates ranged from 0.6 to 4.8 µg (pig)/day or from 164 to 239 µg C/day. Assimilation efficiency ranged from 73 to 90% and from 65 to 76% in 13 and 30 mm aggregates, respectively. S. thompsoni exhibited similar ingestion and egestion rates previously estimated for low Antarctic (~50°S) habitats. It has been suggested that the salp population was able to develop in the Eastern Bellingshausen Sea due to an intrusion into the area of the warm Upper Circumpolar Deep Water
    Keywords: AWI; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SPP1158
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Chlorophyll a, primary production and nutrients during POLARSTERN cruise ANT-XXVIII/2 (2017)
    PANGAEA
    In:  Supplement to: Hoppe, Clara Jule Marie; Klaas, Christine; Ossebaar, Sharyn; Soppa, Mariana A; Cheah, Wee; Laglera, Luis Miguel; Santos-Echeandía, Juan; Rost, Björn; Wolf-Gladrow, Dieter A; Bracher, Astrid; Hoppema, Mario; Strass, Volker H; Trimborn, Scarlett (2017): Controls of primary production in two phytoplankton blooms in the Antarctic Circumpolar Current. Deep Sea Research Part II: Topical Studies in Oceanography, 138, 63-73, https://doi.org/10.1016/j.dsr2.2015.10.005
    Details
    Publication Date: 2023-10-18
    Description: The Antarctic Circumpolar Current has a high potential for primary production and carbon sequestration through the biological pump. In the current study, two large-scale blooms observed in 2012 during a cruise with R.V. Polarstern were investigated with respect to phytoplankton standing stocks, primary productivity and nutrient budgets. While net primary productivity was similar in both blooms, chlorophyll a -specific photosynthesis was more efficient in the bloom closer to the island of South Georgia (39 °W, 50 °S) compared to the open ocean bloom further east (12 °W, 51 °S). We did not find evidence for light being the driver of bloom dynamics as chlorophyll standing stocks up to 165 mg/m² developed despite mixed layers as deep as 90 m. Since the two bloom regions differ in their distance to shelf areas, potential sources of iron vary. Nutrient (nitrate, phosphate, silicate) deficits were similar in both areas despite different bloom ages, but their ratios indicated more pronounced iron limitation at 12 °W compared to 39 °W. While primarily the supply of iron and not the availability of light seemed to control onset and duration of the blooms, higher grazing pressure could have exerted a stronger control toward the declining phase of the blooms.
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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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
  • 6
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    Physical oceanography during POLARSTERN cruise ARK-VIII/2 (2010)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-02
    Keywords: ARK-VIII/2; Attenuation, optical beam transmission; AWI_PhyOce; Calculated; Computed; Conductivity; CTD, Neil Brown, Mark III B, SN 1123; CTD/Rosette; CTD-RO; Date/Time of event; Density, sigma-theta (0); DEPTH, water; Elevation of event; Event label; Latitude of event; Longitude of event; Physical Oceanography @ AWI; Polarstern; Pressure, water; PS19/037-1; PS19/038-1; PS19/039-1; PS19/040-1; PS19/041-1; PS19/043-1; PS19/044-1; PS19/044-2; PS19/045-1; PS19/046-1; PS19/047-1; PS19/048-1; PS19/049-1; PS19/050-1; PS19/051-1; PS19/052-1; PS19/053-1; PS19/055-1; PS19/056-1; PS19/057-1; PS19/058-1; PS19/059-1; PS19/060-1; PS19/061-1; PS19/062-1; PS19/063-1; PS19/064-1; PS19/065-1; PS19/066-1; PS19/067-1; PS19/070-1; PS19/071-1; PS19/072-1; PS19/073-1; PS19/074-1; PS19/075-1; PS19/076-1; PS19/077-1; PS19/078-1; PS19/079-1; PS19/080-1; PS19/081-1; PS19/081-2; PS19/082-1; PS19/083-1; PS19/084-1; PS19/085-1; PS19/086-1; PS19/087-1; PS19/088-1; PS19/089-1; PS19/090-1; PS19/090-2; PS19/091-1; PS19/092-1; PS19/093-1; PS19/094-1; PS19/095-1; PS19/096-1; PS19/097-1; PS19/098-1; PS19/099-1; PS19/100-1; PS19/101-1; PS19/102-1; PS19/103-1; PS19/104-1; PS19/105-1; PS19/106-1; PS19/107-1; PS19/108-1; PS19/109-1; PS19/110-1; PS19/111-1; PS19/112-1; PS19/113-1; PS19/114-1; PS19/115-1; PS19/116-1; PS19/117-1; PS19/118-1; PS19/119-1; PS19/120-1; PS19/121-1; PS19/123-1; PS19/124-1; PS19/126-1; PS19/127-1; PS19/128-1; PS19/129-1; PS19/130-1; PS19/131-1; PS19/132-1; PS19/133-1; PS19/134-1; PS19/135-1; PS19/136-1; PS19/137-1; PS19/138-1; PS19/139-1; PS19/141-1; PS19/142-1; PS19/143-1; PS19/144-1; PS19/145-1; PS19/146-1; PS19/208-1; PS19/278-1; PS19 EPOS II; Salinity; Temperature, water; Temperature, water, potential
    Type: Dataset
    Format: text/tab-separated-values, 314568 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Species abundance and water and sediment characteristics for three ANDEEP stations on Maud Rise and the Weddell Sea (2011)
    PANGAEA
    In:  Supplement to: Brandt, Angelika; Bathmann, Ulrich; Brix, Saskia; Cisewski, Boris; Flores, Hauke; Göcke, C; Janussen, Dorte; Krägefsky, Sören; Kruse, Svenja; Leach, Harry; Linse, Katrin; Pakhomov, Evgeny A; Peeken, Ilka; Riehl, Torben; Sauter, Eberhard-Jürgen; Sachs, Oliver; Schüller, M; Schrödl, M; Schwabe, E; Strass, Volker H; van Franeker, Jan Andries; Wilmsen, Markus (2011): Maud Rise - a snapshot through the water column. Deep Sea Research Part II: Topical Studies in Oceanography, 58(19-20), 1962-1982, https://doi.org/10.1016/j.dsr2.2011.01.008
    Details
    Publication Date: 2024-03-23
    Description: The benthic fauna was investigated during the expedition ANT-XXIV/2 (2007/08) in relation to oceanographic features, biogeochemical properties and sediment characteristics, as well as the benthic, pelagic and air-breathing fauna. The results document that Maud Rise (MR) differs distinctly from surrounding deep-sea basins investigated during previous Southern Ocean expeditions (ANDEEP 2002, 2005). Considering all taxa, the overall similarity between MR and adjacent stations was low (~20% Bray-Curtis-Similarity), and analyses of single taxa show obvious differences in species composition, abundances and densities. The composition and diversity of bivalves of MR are characterised by extremely high abundances of three species, especially the small sized Vesicomya spp. Exceptionally high gastropod abundance at MR is due to the single species Onoba subantarctica wilkesiana, a small brooder that may prey upon abundant benthic foraminiferas. The abundance and diversity of isopods also show that one family, Haplomunnidae, occurs with a surprisingly high number of individuals at MR while this family was not found at any of the 40 bathyal and abyssal ANDEEP stations. Similarly, polychaetes, especially the tube-dwelling, suspension-feeder fraction, are represented by species not found at the comparison stations. Sponges comprise almost exclusively small specimens in relatively high numbers, especially a few species of Polymastiidae. Water-column sampling from the surface to the seafloor, including observations of top predators, indicate the existence of a prospering pelagic food web. Local concentrations of top predators and zooplankton are associated with a rich ice-edge bloom located over the northern slope of MR. There the sea ice melts, which is probably accelerated by the advection of warm water at intermediate depth. Over the southern slope, high concentrations of Antarctic krill (Euphausia superba) occur under dense sea ice and attract Antarctic Minke Whales (Balaenoptera bonaerensis) and several seabird species. These findings suggest that biological prosperity over MR is related to both oceanographic and sea-ice processes. Downward transport of the organic matter produced in the pelagic realm may be more constant than elsewhere due to low lateral drift over MR.
    Keywords: AWI; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; SPP1158
    Type: Dataset
    Format: application/zip, 7 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Physical oceanography and processed 2 minutes-averaged continuous VM-ADCP profiles during POLARSTERN cruise ANT-XXVIII/3 (2016)
    PANGAEA
    In:  Supplement to: Strass, Volker H; Leach, Harry; Prandke, Hartmut; Donnelly, Matthew; Bracher, Astrid; Wolf-Gladrow, Dieter A (2016): The physical environmental conditions for biogeochemical differences along the Antarctic Circumpolar Current in the Atlantic Sector during late austral summer 2012. Deep Sea Research Part II: Topical Studies in Oceanography, 20 pp, https://doi.org/10.1016/j.dsr2.2016.05.018
    Details
    Publication Date: 2024-03-23
    Description: The physical and biological carbon pumps in the different hydrographic and biogeochemical regimes of the Atlantic Sector of the Southern Ocean are controlled by a series of coupled physical, chemical and biological processes and a project named Eddy-Pump was designed to study them. The Eddy Pump field campaign was carried out during RV Polarstern Cruise ANT-XXVIII/3 between January and March 2012. Particular emphasis was laid on the differences which occur along the axis of the Antarctic Circumpolar Current (ACC) with its associated mesoscale eddy field. The study sites were selected in order to represent (1) the central ACC with its regular separation in different frontal jets, investigated by a meridional transect along 10°E; (2) a large-scale bloom west of the Mid-Atlantic Ridge which lasted several months with conspicuous chlorophyll-poor waters to its immediate east studied by a three-dimensional mesoscale survey centred at 12°40'W; and (3) the Georgia Basin north of the island of South Georgia, which regularly features an extended and dense phytoplankton bloom, was investigated by a mesoscale survey centred at 38°12'W. While Eddy-Pump represents an interdisciplinary project by design, we here focus on describing the variable physical environment within which the different biogeochemical regimes developed. For describing the physical environment we use measurements of temperature, salinity and density, of mixed-layer turbulence parameters, of dynamic heights and horizontal current vectors, and of flow trajectories obtained from surface drifters and submerged floats. This serves as background information for the analyses of biological and chemical processes and of biogeochemical fluxes addressed by other papers in this issue. The section along 10°E between 44°S and 53°S showed a classical ACC structure with well-known hydrographic fronts, the Subantarctic Front (SAF) at 46.5°S, the Antarctic Polar Front (APF) split in two, at 49.25°S and 50.5°S, and the Southern Polar Front (SPF) at 52.5°S. Each front was associated with strong eastward flows. The West Mid-Atlantic Ridge Survey showed a weak and poorly resolved meander structure between the APF and the SPF. During the first eight days of the survey the oceanographic conditions at the Central Station at 12°40'W remained reasonably constant. However after that, conditions became more variable in the thermocline with conspicuous temperature inversions and interleavings and also a decrease in temperature in the surface layer. At the very end of the period of observation the conditions in the thermocline returned to being similar to those observed during the early part of the period with however the mixed layer temperature raised. The period of enhanced thermohaline variability was accompanied by increased currents. The Georgia Basin Survey showed a very strong zonal jet at its northern edge which connects to a large cyclonic meander that itself joins an anticyclonic eddy in the southeastern quadrant. The water mass contrasts in this survey were stronger than in the West Mid-Atlantic Ridge Survey, but similar to those met along 10°E with the exception that the warm and saline surface water typical of the northern side of the SAF was not covered by the Georgia Basin Survey. Mixed layers found during Eddy-Pump were typically deep, but varied between the three survey areas; the mean depths and standard variations of the mixed layer along the 10°E were 77.2±24.7 m, at the West Mid-Atlantic Ridge 66.7±17.7 m, and in the Georgia Basin 36.8±10.7 m.
    Keywords: AWI_PhyOce; Physical Oceanography @ AWI
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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  • 9
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    Objective Mapping of Argo data in the Weddell Gyre: a gridded dataset of upper ocean water properties, link to data files in NetCDF format (2016)
    PANGAEA
    In:  Supplement to: Reeve, Krissy A; Boebel, Olaf; Kanzow, Torsten; Strass, Volker H; Rohardt, Gerd; Fahrbach, Eberhard (2016): A gridded data set of upper-ocean hydrographic properties in the Weddell Gyre obtained by objective mapping of Argo float measurements. Earth System Science Data, 8(1), 15-40, https://doi.org/10.5194/essd-8-15-2016
    Details
    Publication Date: 2024-04-20
    Description: The Weddell Gyre plays a crucial role in the modification of climate by advecting heat poleward to the Antarctic ice shelves and by regulating the density of water masses that feed the lowest limb of the global ocean overturning circulation. However, our understanding of Weddell Gyre water mass properties is limited to regions of data availability, primarily along the Prime Meridian. The aim of this paper is to provide a data set of the upper water column properties of the entire Weddell Gyre. Objective mapping was applied to Argo float data in order to produce spatially gridded, time-composite maps of temperature and salinity for fixed pressure levels ranging from 50 to 2000 dbar, as well as temperature, salinity and pressure at the level of the sub-surface temperature maximum. While the data are currently too limited to incorporate time into the gridded structure, the data are extensive enough to produce maps of the entire region across three time-composite periods (2001–2005, 2006–2009 and 2010–2013), which can be used to determine how representative conclusions drawn from data collected along general RV transect lines are on a gyre scale perspective. The work presented here represents the technical prerequisite for addressing climatological research questions in forthcoming studies.
    Keywords: Weddell_Gyre; Weddell Sea
    Type: Dataset
    Format: application/zip, 6.7 MBytes
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  • 10
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    Physical oceanography during POLARSTERN cruise ANT-XXI/3 (EIFEX) (2010)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven | Supplement to: Leach, Harry; Strass, Volker H (2019): Cyclonic eddies and upper thermocline fine-scale structures in the Antarctic Circumpolar Current. Ocean Dynamics, 69(2), 157-173, https://doi.org/10.1007/s10236-018-1241-x
    Details
    Publication Date: 2024-06-25
    Description: The track of Polarstern Cruise ANTXXI/3-"EIFEX"- leaving from Cape Town on 21st January 2004 and arriving back in Cape Town on 25th March 2004. The purpose of this cruise was to conduct an iron fertilisation experiment in the ACC. The reason for using an eddy was that the water fertilised with iron sulphate would be trapped and relatively easy to follow. The first eddy (Eddy 1) selected on the basis of altimeter data was at about 50°S, 18°E. This eddy was surveyed during a period of 7 days between 25th January and 1st February 2004 by CTD/Rosette casts along five equally spaced meridional sections. Along the westernmost section, 17°E, the station spacing was 5 mi (9 km), and along the other 4 (17°40', 18°20', 19°00' and 19°40' E), it was 12 mi (22 km); the sections were completed systematically working from west to east. Investigation revealed that the initial chlorophyll concentration was too low for the fertilisation experiment and so this eddy was rejected, but not before a useful set of physical data had been obtained. Instead, a second eddy (Eddy 2), at about 49°S, 2°E was selected for the experiment and was ultimately occupied for a period of 40 days. Altogether, this eddy was investigated during the period 8th February to 20th March 2004; however, the data for the initial CTD/Rosette survey were collected during a period of 6 days between 14th and 20th February. The stations were evenly spaced 12 mi (22 km) apart meridionally and zonally, or 12' latitude and about 18.6' of longitude, with ten stations along each of eight equally spaced meridional sections between 1°19' and 3°29' E. The sections were collected systematically from west to east.
    Keywords: ANT-XXI/3; Attenuation, optical beam transmission; AWI_PhyOce; Calculated; Computed; Conductivity; CTD, Sea-Bird SBE 911plus; CTD/Rosette; CTD-RO; Date/Time of event; Density, sigma-theta (0); DEPTH, water; Elevation of event; Event label; Fluorometer; Fluorometer, Dr. Haardt Instruments; Latitude of event; Longitude of event; MULT; Multiple investigations; Number of observations; Physical Oceanography @ AWI; Polarstern; Pressure, water; PS65/348-4; PS65/349-1; PS65/350-1; PS65/351-1; PS65/352-1; PS65/353-1; PS65/354-1; PS65/355-1; PS65/356-1; PS65/357-1; PS65/358-1; PS65/359-1; PS65/360-1; PS65/361-1; PS65/362-1; PS65/363-1; PS65/364-1; PS65/365-1; PS65/366-1; PS65/367-1; PS65/368-1; PS65/369-1; PS65/370-1; PS65/371-1; PS65/372-1; PS65/373-1; PS65/374-1; PS65/375-1; PS65/376-1; PS65/377-1; PS65/378-1; PS65/379-1; PS65/380-1; PS65/381-1; PS65/382-1; PS65/383-1; PS65/384-1; PS65/385-1; PS65/386-1; PS65/387-1; PS65/388-1; PS65/389-1; PS65/389-4; PS65/391-1; PS65/392-1; PS65/393-1; PS65/394-1; PS65/395-1; PS65/396-1; PS65/397-1; PS65/398-1; PS65/399-1; PS65/400-1; PS65/401-1; PS65/402-1; PS65/403-1; PS65/404-1; PS65/405-1; PS65/406-1; PS65/407-1; PS65/408-1; PS65/409-1; PS65/410-1; PS65/411-1; PS65/412-1; PS65/413-1; PS65/414-1; PS65/415-1; PS65/416-1; PS65/417-1; PS65/418-1; PS65/419-1; PS65/420-11; PS65/420-13; PS65/420-17; PS65/420-19; PS65/420-3; PS65/420-6; PS65/420-8; PS65/424-13; PS65/424-17; PS65/424-20; PS65/424-22; PS65/424-3; PS65/424-8; PS65/426-1; PS65/426-4; PS65/426-7; PS65/427-1; PS65/427-6; PS65/428-1; PS65/429-1; PS65/430-1; PS65/431-1; PS65/432-1; PS65/433-1; PS65/434-1; PS65/435-1; PS65/436-1; PS65/437-1; PS65/438-1; PS65/439-1; PS65/440-1; PS65/441-1; PS65/442-1; PS65/443-1; PS65/444-1; PS65/445-1; PS65/446-1; PS65/447-1; PS65/448-1; PS65/449-1; PS65/450-1; PS65/451-1; PS65/452-1; PS65/453-1; PS65/454-1; PS65/455-1; PS65/456-1; PS65/457-1; PS65/458-1; PS65/459-3; PS65/460-1; PS65/461-2; PS65/462-1; PS65/463-2; PS65/464-1; PS65/465-2; PS65/466-2; PS65/467-1; PS65/468-1; PS65/469-1; PS65/470-1; PS65/471-1; PS65/472-1; PS65/473-1; PS65/474-1; PS65/475-1; PS65/476-1; PS65/477-1; PS65/478-1; PS65/479-1; PS65/480-1; PS65/481-1; PS65/482-1; PS65/483-1; PS65/484-1; PS65/485-1; PS65/486-1; PS65/487-1; PS65/488-1; PS65/489-1; PS65/490-1; PS65/491-1; PS65/492-1; PS65/493-1; PS65/494-1; PS65/495-1; PS65/496-1; PS65/497-1; PS65/498-1; PS65/499-1; PS65/500-1; PS65/501-1; PS65/502-1; PS65/503-1; PS65/504-1; PS65/505-1; PS65/506-1; PS65/507-1; PS65/508-11; PS65/508-16; PS65/508-18; PS65/508-2; PS65/508-22; PS65/508-5; PS65/509-1; PS65/509-13; PS65/509-16; PS65/509-4; PS65/509-7; PS65/511-1; PS65/511-12; PS65/511-5; PS65/511-9; PS65/513-12; PS65/513-16; PS65/513-18; PS65/513-3; PS65/513-5; PS65/513-9; PS65/514-10; PS65/514-13; PS65/514-18; PS65/514-2; PS65/514-6; PS65/515-1; PS65/516-1; PS65/517-1; PS65/518-1; PS65/519-1; PS65/520-1; PS65/521-1; PS65/522-1; PS65/523-1; PS65/524-1; PS65/525-1; PS65/526-1; PS65/527-1; PS65/528-1; PS65/529-1; PS65/530-1; PS65/531-1; PS65/532-1; PS65/533-1; PS65/534-1; PS65/535-1; PS65/536-1; PS65/537-1; PS65/538-1; PS65/539-1; PS65/540-1; PS65/541-1; PS65/543-1; PS65/543-10; PS65/543-15; PS65/543-18; PS65/543-5; PS65/543-8; PS65/544-10; PS65/544-11; PS65/544-12; PS65/544-14; PS65/544-15; PS65/544-16; PS65/544-18; PS65/544-20; PS65/544-24; PS65/544-26; PS65/544-29; PS65/544-3; PS65/544-30; PS65/544-32; PS65/544-35; PS65/544-39; PS65/544-42; PS65/544-46; PS65/544-48; PS65/544-5; PS65/544-53; PS65/544-56; PS65/544-58; PS65/544-6; PS65/544-60; PS65/544-63; PS65/544-7; PS65/544-9; PS65/545-1; PS65/545-4; PS65/546-14; PS65/546-19; PS65/546-2; PS65/546-22; PS65/546-5; PS65/546-7; PS65/553-10; PS65/553-11; PS65/553-12; PS65/553-3; PS65/553-5; PS65/553-9; PS65/554-1; PS65/555-1; PS65/556-1; PS65/557-1; PS65/558-1; PS65/559-1; PS65/560-2; PS65/561-1; PS65/562-2; PS65/563-1; PS65/564-1; PS65/565-1; PS65/570-11; PS65/570-14; PS65/570-15; PS65/570-2; PS65/570-4; PS65/570-7; PS65/570-9; PS65/572-1; PS65/573-1; PS65/574-1; PS65/576-1; PS65/580-10; PS65/580-12; PS65/580-14; PS65/580-18; PS65/580-2; PS65/580-6; PS65/580-8; PS65/581-1; PS65/583-1; PS65/584-1; PS65/585-1; PS65/586-2; PS65/587-1; PS65/587-10; PS65/587-14; PS65/587-15; PS65/587-16; PS65/587-3; PS65/587-5; PS65/588-1; PS65/589-1; PS65/590-1; PS65/591-1; PS65/591-11; PS65/591-3; PS65/591-5; PS65/591-7; PS65/592-1; PS65/593-12; PS65/593-14; PS65/593-16; PS65/593-17; PS65/593-18; PS65/593-3; PS65/593-6; PS65/593-9; PS65 EIFEX; Salinity; South Atlantic Ocean; Temperature, water; Temperature, water, potential
    Type: Dataset
    Format: text/tab-separated-values, 2018499 data points
    Location Call Number Limitation Availability
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