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A 1°x1° monthly global sea surface nitrate (SSN) gridded dataset (2003-2023)
No full textWe employed an algorithm for estimating the monthly average sea surface nitrate (SSN) on a global 1° by 1° resolution grid; this algorithm relies on the empirical relationship between the World Ocean Atlas 2018 (WOA18) monthly interpolated climatology of nitrate in each 1° × 1° grid and the estimated monthly sea surface temperature (SST) and photosynthetically active radiation (PAR) datasets from Moderate Resolution Imaging Spectroradiometer (MODIS) and mixed layer depth (MLD) from the Hybrid Coordinate Ocean Model (HYCOM). This dataset contains (1) the predictor variables used to construct the models; (2) the dependent variables used in model development; (3) the local multivariate linear regression models; (4) the global monthly SSN products from 2003 to 2023, generated by local multivariate linear regression models; (5) the validation dataset containing measured and model predictions for 2018-2023. The predictor variables of the method include SST, MLD and PAR. The spatial resolution of the simulated dataset is 1° by 1°. The units of SSN concentration are µmol/l. The relevant data describing paper has been published in the Journal 'Science of the Total Environment' in 2024
Master tracks in different resolutions of SONNE cruise SO309, Wellington - Wellington, 2025-01-16 - 2025-02-14
No full textRaw data acquired by position sensors on board RV SONNE during expedition SO309 were processed to receive a validated master track which can be used as reference of further expedition data. During SO309 the motion reference unit Kongsberg SeaTex AS MRU-5 combined with Kongsberg SeaTex AS Seapath 320 and two GPS receivers SAAB MGL-4 were used as navigation sensors. Data were downloaded from DAVIS SHIP data base (https://dship.bsh.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track
Munition compound data for water samples collected from German and Danish waters of Baltic Sea during ALKOR cruise AL603 in October 2023
No full textThis dataset consists of munition compound data from the analysis of water samples collected along a cruise track that went through German and Danish waters of the western Baltic Sea in October 2023 during ALKOR cruise AL603. The cruise track started and ended in the Bay of Kiel, via the Little Belt, Bay of Aarhus, Great Belt and Bay of Mecklenburg. Water column samples were collected from 99 stations. Surface and deep-water samples were collected using a rosette of Niskin bottles. A CTD sensor package was also mounted on the the Niskin rosette frame. Samples (1L) were extracted onboard onto solid phase extraction (SPE) columns. Munition compounds were eluted from the SPE columns using acetonitrile, concentrated and reconstituted in 50% methanol/water. The samples were analyzed by ultra high-performance liquid chromatography and high-resolution, atmospheric pressure chemical ionization mass spectrometry
CT-Scan of sediment core PS128_47-1
No full textCore PS128_46-1 was retrieved from a cross-shelf paleo-ice stream trough at the outer shelf in Iceberg Alley (Mac. Robertson Shelf). To aid with lithological investigations, sectional views were extracted from 3D computed tomography (CT) scans performed on a Geotek RXCT scanner. A Thermo Kevex PSX10-65W was used as the x-ray source, run at a voltage of 130 kV with a current of 303 mA. After acquisition with the native Geotek XCT (v.5) software and subsequent pre-processing steps, orthogonal views of each core section were extracted from the central pixel of the reconstructed scan at a resolution of 68 pixels per cm. For better visualization, the histograms of the resulting .tif files were adjusted
ARK 2015: AWI airborne Radio-Echo Sounding data in Northeast Greenland at the 79 NG (Nioghalvfjerdsbræ) (MABANG project)
No full textThis dataset contains airborne radar data acquired using the AWI EMR system (Nixdorf et al., 1999) during the Arctic season of 2015. The profiles extend across the Northeast Greenland Ice Sheet at the 79 NG (Nioghalvfjerdsbræ). The data are available as netCDF files (including waveforms and metadata), KML files of the profile line locations, and quicklook images of the radargrams
Master tracks in different resolutions of MARIA S. MERIAN cruise MSM134, Las Palmas - Malaga, 2025-02-02 - 2025-03-02
No full textRaw data acquired by position sensors on board RV MERIAN during expedition MSM134 were processed to receive a validated master track which can be used as reference of further expedition data. During MSM134 the motion reference unit Kongsberg SeaTex AS MRU-5 combined with Kongsberg SeaTex AS Seapath 320 and the GPS receivers Trimble SPS855 and SAAB R4 were used as navigation sensors. Data were downloaded from DAVIS SHIP data base (https://dship.bsh.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track
Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV SONNE during cruise SO309
No full textRaw bathymetry data were collected using the ship's own Kongsberg EM 122 multibeam echosounder during the RV SONNE cruise SO309 CoralNewZ (Cold-water Coral Biology & Geology off Aotearoa New Zealand). The cruise took place between 2025-01-16 and 2025-02-15 (Wellington to Wellington, New Zealand). The primary goal was to search for cold-water coral communities and mounds in the EEZ of New Zealand. Hydroacoustic team included Sam Davidson (NIWA), who was funded by the NIWA internal project OCN2503 – NIWA Strategic Voyage Fund. Bathymetry and backscatter data were recorded using the EM122 deep-water echosounder within 2 main working areas: East of Stewart Island and Chatham Rise (both Pacific Ocean), as well as alone the transits within the EEZ of New Zealand. Data are unprocessed and therefore contain incorrect depth measurements (artifacts). Sound velocity profiles (SVP) were regularly collected in all the main working areas and are part of this dataset. Data can be processed e.g. with the open source software package MB-System (Caress, D. W., and D. N. Chayes, MB-System: Mapping the Seafloor, http://www.mbari.org/products/research-software/mb-system/, 2022)
Multibeam bathymetry raw data (EM 120 echosounder entire dataset) of RV MARIA S. MERIAN during cruise MSM20/3
No full textRaw bathymetry data were collected using the ship's own Kongsberg EM1002 multibeam echosounder during the RV MARIA S. MERIAN cruise MSM20/3 (Response of Amazon sedimentation to deforestation, land use and climate variability). The cruise took place between 2012-02-19 and 2012-03-11 (Recife, Brazil – Bridgetown, Barbados). The primary goal of the cruise was to reconstruct the Holocene and Pleistocene climate history of the Amazon River basin and the adjacent ocean. Bathymetry data were collected in three working ares on the continental slope and shelf off northeastern Brazil (working areas A and B) and French Guiana (working area C). The deep-water system EM120 was used for mapping from the shelf break to deep waters in working areas A and C, while the shallow-water system EM1002 was run in areas B and C. 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. No sound velocity profiles (SVP) files from the cruise are archived at the BSH, thus no SVP files are added to this dataset. Data are unprocessed and therefore contain incorrect depth measurements (artifacts). Data can be processed e.g. with the open source software package MB-System (Caress, D. W., and D. N. Chayes, MB-System: Mapping the Seafloor, http://www.mbari.org/products/research-software/mb-system/, 2022)
Master tracks in different resolutions of SONNE cruise SO311, Wellington - Auckland, 2025-03-25 - 2025-04-30
No full textRaw data acquired by position sensors on board RV SONNE during expedition SO311 were processed to receive a validated master track which can be used as reference of further expedition data. During SO311 the motion reference unit Kongsberg SeaTex AS MRU-5 combined with Kongsberg SeaTex AS Seapath 320 and two GPS receivers SAAB MGL-4 were used as navigation sensors. Data were downloaded from DAVIS SHIP data base (https://dship.bsh.de) with a resolution of 1 sec. Processing and evaluation of the data is outlined in the data processing report. Processed data are provided as a master track with 1 sec resolution derived from the position sensors' data selected by priority and a generalized track with a reduced set of the most significant positions of the master track
Physical oceanography during GOAL cruise Nautilus (2015, 2016, 2017, 2018 and 2019)
No full textThis dataset contains temperature, salinity, fluorescence and dissolved oxygen measurements collected from 2015 to 2019 in the Northern Antarctic Peninsula and vicinities, between 60 and 65 degrees of south latitude. During this period, a total of five cruises were carried out in the area by the High Latitude Oceanography Group (GOAL-FURG), all during the austral summer of the respective years. The NAUTILUS project aims to obtain data in the Antarctic Peninsula to contribute to the knowledge of the freshening of waters around Antarctica and the understanding of the role of dense waters in the acidification of the Southern Ocean. Salinity and temperature were measured using CTD (conductivity, temperature, and depth), and fluorescence and dissolved oxygen were obtained using auxiliary sensors installed in the CTD