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  • 2020-2024  (4)
Collection
Keywords
Publisher
Years
Year
  • 1
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    Unknown
    Southeastern Tropical Atlantic Changing From Subtropical to Tropical Conditions (2021)
    Frontiers
    Details
    Publication Date: 2024-02-07
    Description: A warming and freshening trend of the mixed layer in the upper southeastern tropical Atlantic Ocean (SETA) is observed by the Argo float array during the time period of 2006–2020. The associated ocean surface density reduction impacts upper-ocean stratification that intensified by more than 30% in the SETA region since 2006. The initial typical subtropical stratification with a surface salinity maximum is shifting to more tropical conditions characterized by warmer and fresher surface waters and a subsurface salinity maximum. During the same period isopycnal surfaces in the upper 200 m are shoaling continuously. Observed wind stress changes reveal that open ocean wind curl-driven upwelling increased, however, partly counteracted by reduced coastal upwelling due to weakened alongshore southerly winds. Weakening southerly winds might be a reason why tropical surface waters spread more southward reaching further into the SETA region. The mixed layer warming and freshening and associated stratification changes might impact the marine ecosystem and pelagic fisheries in the Angolan and northern Namibian upwelling region.
    Type: Article , PeerReviewed , info:eu-repo/semantics/article
    Format: text
    Format: other
    Location Call Number Expected Availability
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    PAPER (OCEANREP)
  • 2
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    Warming of the Indian Ocean and its impact on temporal and spatial dynamics of primary production (2021)
    Elsevier
    Details
    Publication Date: 2021-11-01
    Print ISSN: 0079-6611
    Electronic ISSN: 1873-4472
    Topics: Geosciences , Physics
    Published by Elsevier
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    PAPER CURRENT
  • 3
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    Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV METEOR during cruise M131 (2023)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: Raw multibeam bathymetry data were recorded on RV METEOR during M131 using Kongsberg EM 122 multibeam echosounder. The cruise took place between 7.10.2016 - 12.11.2016, (Recife, Brasil - Walvis Bay, Angola) in the Atlantic Ocean. Data were recorded in the Angola EEZ and throughout the whole time spend outside EEZs with an approximate average depth of around 2000m. To enhance MBES data accuracy, real-time measurement by SV-Profiler at transducer depth were directly applied during acquisition with SIS Seafloor Information System. Data are unprocessed and can therefore contain incorrect depth measurements (artifacts) if not further processed. Note that refraction errors can be expected due to the lack of proper SVP. The data are archived at the Federal Maritime and Hydrographic Agency of Germany (Bundesamt für Seeschifffahrt und Hydrographie, BSH) and provided to PANGAEA database for data curation and publication. Ancillary sound velocity profiles (SVP) from the cruise are also archived at BSH, and these files have been added to the dataset. During M131, data acquisition and provision were accomplished to support hydrographic and current measurements along 11°S across the Atlantic, hydrographic and current cross-shelf sections in the Benguela upwelling system, microstructure measurements, mooring service, glider deployments and recoveries and sediment samples. Data publication is done through work package 2 of the EU Horizon 2020 project iAtlantic- Integrated Assessment of Atlantic Marine Ecosystem in Space and Time (https://www.iatlantic.eu/).
    Keywords: Bathymetry; Binary Object; Binary Object (File Size); Binary Object (MD5 Hash); Binary Object (Media Type); Comment; Data file recording distance; Data file recording duration; DATE/TIME; ELEVATION; EM122; EM122 multibeam echosounder; Event label; Extracted from file; Extracted with MB-System; File content; iAtlantic; Integrated Assessment of Atlantic Marine Ecosystems in Space and Time; Kongsberg datagram raw file name; LATITUDE; LONGITUDE; M131; M131_0_Underway-1; Meteor (1986); Multibeam Echosounder; Number of pings; SACUS/SACUS-II; Ship speed; Southwest African Coastal Upwelling System and Benguela Niños; Start of data file, depth; Start of data file, heading; Start of data file recording, date/time; Start of data file recording, latitude; Start of data file recording, longitude; Stop of data file, depth; Stop of data file, heading; Stop of data file recording, date/time; Stop of data file recording, latitude; Stop of data file recording, longitude
    Type: Dataset
    Format: text/tab-separated-values, 27220 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 4
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    Multibeam bathymetry raw data (Kongsberg EM710 entire dataset) of RV METEOR during cruise M131 (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: Raw multibeam bathymetry data were recorded on RV METEOR during M131 using Kongsberg EM 710 multibeam echosounder. The cruise took place between 7.10.2016 - 12.11.2016, (Recife, Brasil - Walvis Bay, Angola) in the Atlantic Ocean. Data were recorded in the Angola EEZ and throughout the whole time spend outside EEZs in areas shallower than 1500m with an approximate average depth of around 400m. To enhance MBES data accuracy, real-time measurement by SV-Profiler at transducer depth were directly applied during acquisition with SIS Seafloor Information System. Data are unprocessed and can therefore contain incorrect depth measurements (artifacts) if not further processed. Note that refraction errors can be expected due to the lack of proper SVP. The data are archived at the Federal Maritime and Hydrographic Agency of Germany (Bundesamt für Seeschifffahrt und Hydrographie, BSH) and provided to PANGAEA database for data curation and publication. Ancillary sound velocity profiles (SVP) from the cruise are also archived at BSH, and these files have been added to the dataset. Data acquisition and provision were accomplished to support hydrographic and current measurements along 11°S across the Atlantic, hydrographic and current cross-shelf sections in the Benguela upwelling system, microstructure measurements, mooring service, glider deployments and recoveries and sediment samples. Data publication is done through work package 2 of the EU Horizon 2020 project iAtlantic- Integrated Assessment of Atlantic Marine Ecosystem in Space and Time (https://www.iatlantic.eu/).
    Keywords: Bathymetry; Binary Object; Binary Object (File Size); Binary Object (MD5 Hash); Binary Object (Media Type); Comment; Data file recording distance; Data file recording duration; DATE/TIME; ELEVATION; EM710; EM710 multibeam echosounder; Event label; Extracted from file; Extracted with MB-System; File content; iAtlantic; Integrated Assessment of Atlantic Marine Ecosystems in Space and Time; Kongsberg datagram raw file name; LATITUDE; LONGITUDE; M131; M131_0_Underway-2; Meteor (1986); Multibeam Echosounder; Number of pings; SACUS/SACUS-II; Ship speed; Southwest African Coastal Upwelling System and Benguela Niños; Start of data file, depth; Start of data file, heading; Start of data file recording, date/time; Start of data file recording, latitude; Start of data file recording, longitude; Stop of data file, depth; Stop of data file, heading; Stop of data file recording, date/time; Stop of data file recording, latitude; Stop of data file recording, longitude
    Type: Dataset
    Format: text/tab-separated-values, 33328 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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