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  • 1
    Buch
    Buch
    Frazil ice formation and incorporation of sediments into sea ice in the Kara Sea (2000)
    Bergen
    Details Verfügbarkeit
    Materialart: Buch
    Seiten: 170 S. , Ill., Tab.
    ISBN: 8299547318
    Sprache: Unbestimmte Sprache
    Anmerkung: Bergen, Univ., Diss., 2000
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 2
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    Antarctic ice sheet topography, cavity geometry, and global bathymetry (RTopo 1.0.5-beta) (2010)
    PANGAEA
    In:  Supplement to: Timmermann, Ralph; Le Brocq, Anne M; Deen, Tara J; Domack, Eugene W; Dutrieux, Pierre; Galton-Fenzi, Ben; Hellmer, Hartmut H; Humbert, Angelika; Jansen, Daniela; Jenkins, Adrian; Lambrecht, Astrid; Makinson, Keith; Niederjasper, Fred; Nitsche, Frank-Oliver; Nøst, Ole Anders; Smedsrud, Lars Henrik; Smith, Walter (2010): A consistent dataset of Antarctic ice sheet topography, cavity geometry, and global bathymetry. Earth System Science Data, 2(2), 261-273, https://doi.org/10.5194/essd-2-261-2010
    Details
    Publikationsdatum: 2023-03-16
    Beschreibung: Sub-ice shelf circulation and freezing/melting rates in ocean general circulation models depend critically on an accurate and consistent representation of cavity geometry. Existing global or pan-Antarctic data sets have turned out to contain various inconsistencies and inaccuracies. The goal of this work is to compile independent regional fields into a global data set. We use the S-2004 global 1-minute bathymetry as the backbone and add an improved version of the BEDMAP topography for an area that roughly coincides with the Antarctic continental shelf. Locations of the merging line have been carefully adjusted in order to get the best out of each data set. High-resolution gridded data for upper and lower ice surface topography and cavity geometry of the Amery, Fimbul, Filchner-Ronne, Larsen C and George VI Ice Shelves, and for Pine Island Glacier have been carefully merged into the ambient ice and ocean topographies. Multibeam survey data for bathymetry in the former Larsen B cavity and the southeastern Bellingshausen Sea have been obtained from the data centers of Alfred Wegener Institute (AWI), British Antarctic Survey (BAS) and Lamont-Doherty Earth Observatory (LDEO), gridded, and again carefully merged into the existing bathymetry map. The global 1-minute dataset (RTopo-1 Version 1.0.5) has been split into two NetCDF files. The first contains digital maps for global bedrock topography, ice bottom topography, and surface elevation. The second contains the auxiliary maps for data sources and the surface type mask. A regional subset that covers all variables for the region south of 50 deg S is also available in NetCDF format. Datasets for the locations of grounding and coast lines are provided in ASCII format.
    Schlagwort(e): AWI_OceDyn; Comment; File format; File size; ice2sea; Ocean Dynamics @ AWI; RTopo; RTopo-1; Uniform resource locator/link to file
    Materialart: Dataset
    Format: text/tab-separated-values, 36 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 3
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    Calculated foraminiferal temperatures, and relative abundance, of sediment core PSh-5159N, SW Barents Sea (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-04-20
    Schlagwort(e): AGE; Barents Sea; Counting 〉100 µm fraction; DEPTH, sediment/rock; GC; Globigerina bulloides; Gravity corer; Neogloboquadrina pachyderma dextral; Neogloboquadrina pachyderma sinistral; Professor Shtokman; PSh-5159N; PSh64; Sub-surface temperature; Turborotalita quinqueloba
    Materialart: Dataset
    Format: text/tab-separated-values, 449 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 4
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    Fram Strait sea ice export variability over the last 80 years (2016)
    PANGAEA
    In:  Supplement to: Smedsrud, Lars Henrik; Halvorsen, Mari H; Stroeve, Julienne C; Zhang, Rong; Kloster, Kjell (2017): Fram Strait sea ice export variability and September Arctic sea ice extent over the last 80 years. The Cryosphere, 11(1), 65-79, https://doi.org/10.5194/tc-11-65-2017
    Details
    Publikationsdatum: 2023-01-13
    Beschreibung: A new long-term data record of Fram Strait sea ice area export from 1935 to 2014 is developed using a combination of satellite radar images and station observations of surface pressure across Fram Strait. This data record shows that the long-term annual mean export is about 880?000 km**2, representing 10 % of the sea-ice-covered area inside the basin. The time series has large interannual and multi-decadal variability but no long-term trend. However, during the last decades, the amount of ice exported has increased, with several years having annual ice exports that exceeded 1 million km**2. This increase is a result of faster southward ice drift speeds due to stronger southward geostrophic winds, largely explained by increasing surface pressure over Greenland. Evaluating the trend onwards from 1979 reveals an increase in annual ice export of about +6 % per decade, with spring and summer showing larger changes in ice export (+11 % per decade) compared to autumn and winter (+2.6 % per decade). Increased ice export during winter will generally result in new ice growth and contributes to thinning inside the Arctic Basin. Increased ice export during summer or spring will, in contrast, contribute directly to open water further north and a reduced summer sea ice extent through the ice?albedo feedback. Relatively low spring and summer export from 1950 to 1970 is thus consistent with a higher mid-September sea ice extent for these years. Our results are not sensitive to long-term change in Fram Strait sea ice concentration. We find a general moderate influence between export anomalies and the following September sea ice extent, explaining 18?% of the variance between 1935 and 2014, but with higher values since 2004.
    Schlagwort(e): DATE/TIME; Fram Strait; Fram-Strait_Sea-ice; Sea ice area, flux, at given time interval
    Materialart: Dataset
    Format: text/tab-separated-values, 960 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 5
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    Ice volume corrected δ¹⁸O of N.Pach (sin), sediment core PSh-5157, SW Barents Sea (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-02-08
    Schlagwort(e): AGE; Barents Sea; Calculated; DEPTH, sediment/rock; GC; Gravity corer; Ice volume corrected; Isotope ratio mass spectrometry; Neogloboquadrina pachyderma sinistral, δ18O; PSh-5157; δ18O, adjusted/corrected; δ18O, ice volume effect
    Materialart: Dataset
    Format: text/tab-separated-values, 661 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 6
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    Ice volume corrected δ¹⁸O of N.Pach (sin), sediment core MD99-2284, Faroe-Shetland Channel (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-06-27
    Schlagwort(e): 3664N/S; AGE; Calculated; CALYPSO; Calypso Corer; Cibicides wuellerstorfi, δ13C; DEPTH, sediment/rock; Ice volume corrected; IMAGES V; Isotope ratio mass spectrometry; Marion Dufresne (1995); MD114; MD99-2284; N. Shetland channel; Neogloboquadrina pachyderma sinistral, δ13C; Neogloboquadrina pachyderma sinistral, δ18O; δ18O, adjusted/corrected; δ18O, ice volume effect
    Materialart: Dataset
    Format: text/tab-separated-values, 1097 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 7
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    Planktic isotope records from calypso core MD95-2011 (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-06-27
    Schlagwort(e): AGE; CALYPSO; Calypso Corer; DEPTH, sediment/rock; IMAGES I; Isotope ratio mass spectrometry; Marion Dufresne (1995); MD101; MD952011; MD95-2011; Neogloboquadrina pachyderma sinistral, δ13C; Voring Plateau
    Materialart: Dataset
    Format: text/tab-separated-values, 653 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 8
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    Calculated foraminiferal temperatures, and relative abundances, calypso core MD95-2011 (2019)
    PANGAEA
    Details
    Publikationsdatum: 2023-06-27
    Schlagwort(e): AGE; CALYPSO; Calypso Corer; Counting 〉150 µm fraction; DEPTH, sediment/rock; Globigerina bulloides; IMAGES I; Marion Dufresne (1995); MD101; MD952011; MD95-2011; Neogloboquadrina pachyderma dextral; Neogloboquadrina pachyderma sinistral; Sub-surface temperature; Transfer function, maximum liklihood method; Turborotalita quinqueloba; Voring Plateau
    Materialart: Dataset
    Format: text/tab-separated-values, 2180 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 9
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    Helicopter-borne sea ice thickness measurements in the Storfjord, Spitsbergen from flight HEM_STJ06_01 (2011)
    PANGAEA
    In:  Supplement to: Hendricks, Stefan; Gerland, Sebastian; Smedsrud, Lars Henrik; Haas, Christian; Pfaffhuber, Andreas A; Nilsen, F (2011): Sea-ice thickness variability in Storfjorden, Svalbard. Annals of Glaciology, 52(57), 61-68, https://doi.org/10.3189/172756411795931561
    Details
    Publikationsdatum: 2023-10-28
    Beschreibung: Results from electromagnetic induction surveys of sea-ice thickness in Storfjorden, Svalbard, reveal large interannual ice-thickness variations in a region which is typically characterized by a reoccurring polynya. The surveys were performed in March 2003, May 2006 and March 2007 with helicopter- and ship-based sensors. The thickness distributions are influenced by sea-ice and atmospheric boundary conditions 2 months prior to the surveys, which are assessed with synthetic aperture radar (SAR) images, regional QuikSCAT backscatter maps and wind information from the European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis dataset. Locally formed thin ice from the Storfjorden polynya was frequently observed in 2003 and 2007 (mean thickness 0.55 and 0.37 m, respectively) because these years were characterized by prevailing northeasterly winds. In contrast, the entire fjord was covered with thick external sea ice in 2006 (mean thickness 2.21 m), when ice from the Barents Sea was driven into the fjord by predominantly southerly winds. The modal thickness of this external ice in 2006 increased from 1.2 m in the northern fjord to 2.4 m in the southern fjord, indicating stronger deformation in the southern part. This dynamically thickened ice was even thicker than multi-year ice advected from the central Arctic Ocean in 2003 (mean thickness 1.83 m). The thermodynamic ice thickness of fast ice as boundary condition is investigated with a one-dimensional sea-ice growth model (1DICE) forced with meteorological data from the weather station at the island of Hopen, southeast of Storfjorden. The model results are in good agreement with the modal thicknesses of fast-ice measurements in all years.
    Schlagwort(e): Airborne electromagnetic (EM) induction sounding; Aircraft; Barents Sea; DATE/TIME; Electro-magnetic Bird (EM-Bird); EMB; HEM_STJ06_01; LATITUDE; LONGITUDE; Sea ice thickness; Storfjorden 2006
    Materialart: Dataset
    Format: text/tab-separated-values, 128355 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
  • 10
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    (Table 1) Relative phase shift at moorings F1, F2, F3 and F4 for different oscillations (2009)
    PANGAEA
    In:  Bjerknes Centre for Climate Research
    Details
    Publikationsdatum: 2023-09-06
    Schlagwort(e): Elevation of event; Endurance; Event label; F1; F2; F3; F4; Latitude of event; Longitude of event; Mooring (long time); MOORY; Oscillation; Phase shift, relative; Phase shift, standard deviation; ROPEX; Station label; Weddell Sea
    Materialart: Dataset
    Format: text/tab-separated-values, 50 data points
    Standort Signatur Einschränkungen Verfügbarkeit
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    DATA PANGAEA
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