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  • Data  (88)
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  • 1
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    Physical oceanography, CFC-11 and CFC-12 measured on water bottle samples during cruise SUBPOLAR with RV Thalassa (2020)
    PANGAEA
    Details
    Publication Date: 2023-03-10
    Description: Temperature, salinity, oxygen data and anthropogenic tracers measured on the RV Thalassa Cruise Subpolar Brest - St. John's 06/04 - 07/12/2005 Chief Scientist: Monika Rhein Region: Subpolar North Atlantic
    Keywords: anthropogenic tracers; Bottle number; Calculated; Capillary-chromatographic system with electron capture detector; Celtic Sea; CTD, SEA-BIRD SBE 9 plus, SBE 11 plus deck unit; CTD/Rosette; CTD-RO; Date/Time of event; Davis Strait; Density, sigma-theta (0); DEPTH, water; Elevation of event; Event label; Freon-11 (trichorofluoromethane); Freon-12 (dichlorodifluoromethane); Labrador Sea; Latitude of event; Longitude of event; Oxygen; Oxygen, Winkler (Culberson, 1991, WOCE Report 68/91); Oxygen sensor, SBE 43; Pressure, water; Profile; Salinity; South Atlantic Ocean; Station label; SUBPOLAR; SUBPOLAR_001; SUBPOLAR_002; SUBPOLAR_003; SUBPOLAR_004; SUBPOLAR_005; SUBPOLAR_006; SUBPOLAR_007; SUBPOLAR_008; SUBPOLAR_009; SUBPOLAR_010; SUBPOLAR_011; SUBPOLAR_012; SUBPOLAR_013; SUBPOLAR_014; SUBPOLAR_015; SUBPOLAR_016; SUBPOLAR_017; SUBPOLAR_018; SUBPOLAR_019; SUBPOLAR_020; SUBPOLAR_021; SUBPOLAR_022; SUBPOLAR_023; SUBPOLAR_024; SUBPOLAR_025; SUBPOLAR_026; SUBPOLAR_027; SUBPOLAR_028; SUBPOLAR_029; SUBPOLAR_030; SUBPOLAR_031; SUBPOLAR_032; SUBPOLAR_033; SUBPOLAR_034; SUBPOLAR_035; SUBPOLAR_036; SUBPOLAR_037; SUBPOLAR_038; SUBPOLAR_039; SUBPOLAR_040; SUBPOLAR_041; SUBPOLAR_042; SUBPOLAR_043; SUBPOLAR_044; SUBPOLAR_045; SUBPOLAR_046; SUBPOLAR_047; SUBPOLAR_048; SUBPOLAR_049; SUBPOLAR_050; SUBPOLAR_051; SUBPOLAR_052; SUBPOLAR_053; SUBPOLAR_054; SUBPOLAR_055; SUBPOLAR_056; SUBPOLAR_057; SUBPOLAR_058; SUBPOLAR_059; SUBPOLAR_060; SUBPOLAR_061; SUBPOLAR_062; SUBPOLAR_063; SUBPOLAR_064; SUBPOLAR_065; SUBPOLAR_066; SUBPOLAR_067; SUBPOLAR_068; SUBPOLAR_069; SUBPOLAR_070; SUBPOLAR_071; SUBPOLAR_072; SUBPOLAR_073; SUBPOLAR_074; SUBPOLAR_075; SUBPOLAR_076; SUBPOLAR_077; SUBPOLAR_078; SUBPOLAR_079; SUBPOLAR_080; SUBPOLAR_081; SUBPOLAR_082; SUBPOLAR_083; SUBPOLAR_084; SUBPOLAR_085; SUBPOLAR_086; SUBPOLAR_087; SUBPOLAR_088; SUBPOLAR_089; SUBPOLAR_090; SUBPOLAR_091; SUBPOLAR_092; SUBPOLAR_093; SUBPOLAR_094; SUBPOLAR_095; SUBPOLAR_096; SUBPOLAR_097; SUBPOLAR_098; SUBPOLAR_099; SUBPOLAR_100; SUBPOLAR_101; SUBPOLAR_102; SUBPOLAR_103; SUBPOLAR_104; SUBPOLAR_105; SUBPOLAR_106; SUBPOLAR_107; SUBPOLAR_108; SUBPOLAR_109; SUBPOLAR_110; SUBPOLAR_111; SUBPOLAR_112; SUBPOLAR_113; SUBPOLAR_114; SUBPOLAR_115; SUBPOLAR_116; SUBPOLAR_117; SUBPOLAR_118; SUBPOLAR_119; SUBPOLAR_120; SUBPOLAR_121; SUBPOLAR_122; SUBPOLAR_123; SUBPOLAR_124; SUBPOLAR_125; SUBPOLAR_126; SUBPOLAR_127; SUBPOLAR_128; SUBPOLAR_129; subpolar North Atlantic; Temperature, water; Temperature, water, potential; Thalassa; Time in days
    Type: Dataset
    Format: text/tab-separated-values, 27579 data points
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  • 2
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    Physical oceanography during three Maria S. Merian cruises (MSM21/2, MSM27, MSM28)
    PANGAEA
    In:  Supplement to: Schneider, Linn; Kieke, Dagmar; Jochumsen, Kerstin; Colbourne, Eugene; Yashayaev, Igor M; Steinfeldt, Reiner; Varotsou, Eirini; Serra, Nuno; Rhein, Monika (2015): Variability of Labrador Sea Water transported through Flemish Pass during 1993-2013. Journal of Geophysical Research: Oceans, 120(8), 5514-5533, https://doi.org/10.1002/2015JC010939
    Details
    Publication Date: 2023-05-12
    Description: Flemish Pass, located at the western subpolar margin, is a passage (sill depth 1200 m) that is constrained by the Grand Banks and the underwater plateau Flemish Cap. In addition to the Deep Western Boundary Current (DWBC) pathway offshore of Flemish Cap, Flemish Pass represents another southward transport pathway for two modes of Labrador Sea Water (LSW), the lightest component of North Atlantic Deep Water carried with the DWBC. This pathway avoids potential stirring regions east of Flemish Cap and deflection into the interior North Atlantic. Ship-based velocity measurements between 2009 and 2013 at 47°N in Flemish Pass and in the DWBC east of Flemish Cap revealed a considerable southward transport of Upper LSW through Flemish Pass (15-27%, -1.0 to -1.5 Sv). About 98% of the denser Deep LSW were carried around Flemish Cap as Flemish Pass is too shallow for considerable transport of Deep LSW. Hydrographic time series from ship-based measurements show a significant warming of 0.3°C/decade and a salinification of 0.03/decade of the Upper LSW in Flemish Pass between 1993 and 2013. Almost identical trends were found for the evolution in the Labrador Sea and in the DWBC east of Flemish Cap. This indicates that the long-term hydrographic variability of Upper LSW in Flemish Pass as well as in the DWBC at 47°N is dominated by changes in the Labrador Sea, which are advected southward. Fifty years of numerical ocean model simulations in Flemish Pass suggest that these trends are part of a multidecadal cycle.
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 3
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    PIES time series in the North Atlantic at the Mid-Atlantic Ridge (2006-2010)
    PANGAEA
    In:  Supplement to: Roessler, Achim; Rhein, Monika; Kieke, Dagmar; Mertens, Christian (2015): Long-term observations of North Atlantic Current transport at the gateway between western and eastern Atlantic. Journal of Geophysical Research: Oceans, 120(6), 4003-4027, https://doi.org/10.1002/2014JC010662
    Details
    Publication Date: 2023-05-12
    Description: In the western North Atlantic, warm and saline water is brought by the North Atlantic Current (NAC) from the subtropics into the subpolar gyre. Four inverted echo sounders with high precision pressure sensors (PIES) were moored between 47°40' N and 52°30' N to study the main pathways of the NAC from the western into the eastern basin. The array configuration that forms three segments (northern, central, and southern) allows partitioning of the NAC and some assessment of NAC flow paths through the different Mid-Atlantic Ridge fracture zones. We exploit the correlation between the NAC transport measured between 2006 and 2010 and the geostrophic velocity from altimeter data to extend the time series of NAC transports to the period from 1992 to 2013. The mean NAC transport over the entire 21 years is 27 ± 5 Sv, consisting of 60% warm water of subtropical origin and 40% subpolar water. We did not find a significant trend in the total transport time series, but individual segments had opposing trends, leading to a more focused NAC in the central subsection and decreasing transports in the southern and northern segments. The spectral analysis exhibits several significant peaks. The two most prominent are around 120 days, identified as the time scale of meanders and eddies, and at 4-9 years, most likely related to the NAO. Transport composites for the years of highest and lowest NAO indices showed a significantly higher transport (+2.9 Sv) during strong NAO years, mainly in the southern segment.
    Type: Dataset
    Format: application/zip, 5 datasets
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  • 4
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    Current meter measurements from five moorings in the subpolar North Atlantic east of the Grand Banks of Newfoundland
    PANGAEA
    In:  Supplement to: Mertens, Christian; Rhein, Monika; Walter, Maren; Böning, Claus W; Behrens, Erik; Kieke, Dagmar; Steinfeldt, Reiner; Stöber, Uwe (2014): Circulation and transports in the Newfoundland Basin, western subpolar North Atlantic. Journal of Geophysical Research: Oceans, 119(11), 7772-7793, https://doi.org/10.1002/2014JC010019
    Details
    Publication Date: 2023-05-12
    Description: The southwestern part of the subpolar North Atlantic east of the Grand Banks of Newfoundland and Flemish Cap is a crucial area for the Atlantic Meridional Overturning Circulation. Here the exchange between subpolar and subtropical gyre takes place, southward flowing cold and fresh water is replaced by northward flowing warm and salty water within the North Atlantic Current (NAC). As part of a long-term experiment, the circulation east of Flemish Cap has been studied by seven repeat hydrographic sections along inline image (2003-2011), a 2 year time series of current velocities at the continental slope (2009-2011), 19 years of sea surface height, and 47 years of output from an eddy resolving ocean circulation model. The structure of the flow field in the measurements and the model shows a deep reaching NAC with adjacent recirculation and two distinct cores of southward flow in the Deep Western Boundary Current (DWBC): one core above the continental slope with maximum velocities at mid-depth and the second farther east with bottom-intensified velocities. The western core of the DWBC is rather stable, while the offshore core shows high temporal variability that in the model is correlated with the NAC strength. About 30 Sv of deep water flow southward below a density of sigma-theta = 27.68 kg/m**3 in the DWBC. The NAC transports about 110 Sv northward, approximately 15 Sv originating from the DWBC, and 75 Sv recirculating locally east of the NAC, leaving 20 Sv to be supplied by the NAC from the south.
    Type: Dataset
    Format: application/zip, 6 datasets
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  • 5
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    Physical oceanography during two METEOR cruises in the subpolar North Atlantic (2015)
    PANGAEA
    In:  Supplement to: Stendardo, Ilaria; Kieke, Dagmar; Rhein, Monika; Gruber, Nicolas; Steinfeldt, Reiner (2015): Interannual to decadal oxygen variability in the mid-depth water masses of the eastern North Atlantic. Deep Sea Research Part I: Oceanographic Research Papers, 95, 85-98, https://doi.org/10.1016/j.dsr.2014.10.009
    Details
    Publication Date: 2023-01-13
    Description: The detection of multi-decadal trends in the oceanic oxygen content and its possible attribution to global warming is protracted by the presence of a substantial amount of interannual to decadal variability, which hitherto is poorly known and characterized. Here we address this gap by studying interannual to decadal changes of the oxygen concentration in the Subpolar Mode Water (SPMW), the Intermediate Water (IW) and the Mediterranean Outflow Water (MOW) in the eastern North Atlantic. We use data from a hydrographic section located in the eastern North Atlantic at about 48°N repeated 12 times over a period of 19 years from 1993 through 2011, with a nearly annual resolution up to 2005. Despite a substantial amount of year-to-year variability, we observe a long-term decrease in the oxygen concentration of all three water masses, with the largest changes occurring from 1993 to 2002. During that time period, the trends were mainly caused by a contraction of the subpolar gyre associated with a northwestward shift of the Subpolar Front (SPF) in the eastern North Atlantic. This caused SPMW to be ventilated at lighter densities and its original density range being invaded by subtropical waters with substantially lower oxygen concentrations. The contraction of the subpolar gyre reduced also the penetration of IW of subpolar origin into the region in favor of an increased northward transport of IW of subtropical origin, which is also lower in oxygen. The long-term oxygen changes in the MOW were mainly affected by the interplay between circulation and solubility changes. Besides the long-term signals, mesoscale variability leaves a substantial imprint as well, affecting the water column over at least the upper 1000 m and laterally by more than 400 km. Mesoscale eddies induced changes in the oxygen concentration of a magnitude that can substantially alias analyses of long-term changes based on repeat hydrographic data that are being collected at intervals of typically 10 years.
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 6
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    Daily volume transport time series from North Atlantic Eastern Boundary near Goban Spur based on current meter measurements and extended with satellite altimetry (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Description: This data set contains volume transport time series derived from deep-sea moorings deployed in the North Atlantic Eastern Boundary (EB) region at Goban Spur. The moorings are part of an array that represents the eastern extension of the basin-wide "North Atlantic Changes" (NOAC) ocean observatory deployed along 47°N. The first time series (observed) is obtained from 10-day low-pass filtered current meter measurments at mooring EB1 and EB3 from 2017 to 2019. The second time series (regressed) is extendend to the period 1993 to 2019 applying a multi-linear regression model on geostrophic surface velocities derived from satellite altimetry.
    Keywords: current velocity; DATE/TIME; Eastern Boundary; EB1/1; EB1/2; EB1/3; EB3/2; EB3/3; Goban Spur; Low-pass filtered, 10 days; MOOR; Mooring; MSM53/148-2, MSM64_9-1; MSM64_17-1, MSM73_20-1; MSM64_23-1, MSM73_18-1; MSM73_19-1, MSM83_6-2; MSM73_22-1, MSM83_7-2; Multi-linear regression model on geostrophic surface velocities; North Atlantic Ocean; RACE-II; Regional Atlantic Circulation and global Change II; Transport, volumetric; Volume Transport
    Type: Dataset
    Format: text/tab-separated-values, 10579 data points
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  • 7
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    Physical oceanography during cruise SUBPOLAR08 with RV Thalassa (2020)
    PANGAEA
    Details
    Publication Date: 2023-02-12
    Description: Temperature, salinity and oxygen data measured by CTD on the RV Thalassa Cruise SUBPOLAR08 St. John's - Brest 08/25 - 09/15/2008 Chief Scientist: Dagmar Kieke Region: Subpolar North Atlantic
    Keywords: Calculated; CTD, SEA-BIRD SBE 9 plus, SBE 11 plus deck unit; CTD/Rosette; CTD-RO; Date/Time of event; Density, potential; DEPTH, water; Elevation of event; Event label; hydrographic data; Latitude of event; Longitude of event; Oxygen; Oxygen sensor, SBE 43; Pressure, water; Profile; Salinity; SPOL08_0-1; SPOL08_10-1; SPOL08_1-1; SPOL08_11-1; SPOL08_12-1; SPOL08_13-1; SPOL08_14-1; SPOL08_15-1; SPOL08_16-1; SPOL08_17-1; SPOL08_18-1; SPOL08_19-1; SPOL08_20-1; SPOL08_2-1; SPOL08_21-1; SPOL08_22-1; SPOL08_23-1; SPOL08_24-1; SPOL08_25-1; SPOL08_26-1; SPOL08_27-1; SPOL08_28-1; SPOL08_29-1; SPOL08_30-1; SPOL08_3-1; SPOL08_31-1; SPOL08_32-1; SPOL08_33-1; SPOL08_34-1; SPOL08_35-1; SPOL08_36-1; SPOL08_37-1; SPOL08_38-1; SPOL08_39-1; SPOL08_40-1; SPOL08_4-1; SPOL08_41-1; SPOL08_42-1; SPOL08_43-1; SPOL08_44-1; SPOL08_45-1; SPOL08_46-1; SPOL08_47-1; SPOL08_49-1; SPOL08_50-1; SPOL08_5-1; SPOL08_51-1; SPOL08_52-1; SPOL08_53-1; SPOL08_54-1; SPOL08_55-1; SPOL08_56-1; SPOL08_57-1; SPOL08_58-1; SPOL08_59-1; SPOL08_60-1; SPOL08_6-1; SPOL08_61-1; SPOL08_62-1; SPOL08_63-1; SPOL08_64-1; SPOL08_65-1; SPOL08_66-1; SPOL08_67-1; SPOL08_68-1; SPOL08_69-1; SPOL08_70-1; SPOL08_7-1; SPOL08_73-1; SPOL08_74-1; SPOL08_8-1; SPOL08_9-1; Station label; SUBPOLAR08; subpolar North Atlantic; Temperature, water; Temperature, water, potential; Thalassa
    Type: Dataset
    Format: text/tab-separated-values, 1690176 data points
    Location Call Number Expected Availability
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  • 8
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    Pressure and two-way traveltime time series in the North Atlantic at station PIES_bp12-1
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: DATE/TIME; Inverted echo sounder equipped with pressure sensor; PIES; PIES_bp12-1; Pressure, water; South Atlantic Ocean; Two-way traveltime
    Type: Dataset
    Format: text/tab-separated-values, 1179 data points
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  • 9
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    Current meter measurements from mooring B21-1
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: B21-1; Current velocity, east-west; Current velocity, north-south; DATE/TIME; DEPTH, water; Mooring (long time); MOORY; Pressure, water; South Atlantic Ocean
    Type: Dataset
    Format: text/tab-separated-values, 149153 data points
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  • 10
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    Current meter measurements from mooring B23-1
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: B23-1; Current velocity, east-west; Current velocity, north-south; DATE/TIME; DEPTH, water; Mooring (long time); MOORY; Pressure, water; South Atlantic Ocean
    Type: Dataset
    Format: text/tab-separated-values, 94161 data points
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