cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.895860
title: Documentation of sediment core PS2061-3
DOI: 10.1594/pangaea.895861
title: Documentation of sediment core PS2062-2
DOI: 10.1594/pangaea.895862
title: Documentation of sediment core PS2063-1
DOI: 10.1594/pangaea.895863
title: Documentation of sediment core PS2064-2
DOI: 10.1594/pangaea.895864
title: Documentation of sediment core PS2065-1
DOI: 10.1594/pangaea.895865
title: Documentation of sediment core PS2066-1
DOI: 10.1594/pangaea.895866
title: Documentation of sediment core PS2067-1
DOI: 10.1594/pangaea.895867
title: Documentation of sediment core PS2069-4
DOI: 10.1594/pangaea.895912
title: Photographs of zooplankton species during several POLARSTERN cruises and one John Biscoe cruise to the Southern Ocean

description: During several expeditions to the Southern Ocean (JB03, ANT-V/3, ANT-VII/3, ANT-X/3, ANT-XIV/2, ANT-XVIII/5b and ANT-XXII/2) photographs of copepod and other zooplankton species from net samples were taken. The specimens were either identified in live samples onboard or later in the lab in formalin preserved samples which is also noted in the metadata. Live specimens were caught with Bongo nets, while preserved specimens were caught with a multinet. Photographs were taken through the ocular of the stereo microscope. No scale is provided, but a link to the respective WoRMS species page where sizes for adults can be found. If available a link to the corresponding dataset on species abundances during the cruises is provided.
DOI: 10.1594/pangaea.895914
title: Photographs of copepod species from net samples taken during the METEOR cruise M44/2

description: Photographs of copepod species were taken from net samples of the METEOR cruise M44/2 to the northern Red Sea. The specimens were identified from formalin preserved samples which is noted in the metadata. Photographs were taken through the ocular of the stereo microscope. No scale is provided, but a link to the respective WoRMS species page where sizes for adults can be found. If available a link to a corresponding dataset on species abundances during the cruises is provided.
DOI: 10.1594/pangaea.895915
title: Photographs of copepod species from net samples taken during the POLARSTERN cruise ANT-XX/1 (PS63)

description: Photographs of copepod species were taken from net samples of the POLARSTERN cruise ANT-XX/1 to the Eastern Atlantic. The specimens were either identified and photographed from live samples onboard or from formalin preserved samples which is noted in the metadata. Photographs were taken through the ocular of the stereo microscope. No scale is provided, but a link to the respective WoRMS species page where sizes for adults can be found. If available a link to a corresponding dataset on species abundances during the cruises is provided.
DOI: 10.1594/pangaea.896275
title: Processed 2 minutes-averaged continuous VM-ADCP (vessel-mounted Acoustic Doppler Current Profiler) profiles during POLARSTERN cruise PS98

description: This data set was collected during the R. V. Polarstern cruise PS98. Outside territorial waters, current velocities were measured nearly continuously along the ship's track with a vessel-mounted TRD Instruments 153.6-kHz Ocean Surveyor ADCP. The transducers were located 11 m below the water line and were protected against ice floes by an acoustically transparent plastic window. The current measurements used a pulse of 2 seconds and vertical bin length of 4 meters. The ship's velocity was calculated from position fixes obtained by the Global Positioning System (GPS). Heading, roll and pitch data from the ship's gyro platforms and the navigation data were used to convert the ADCP velocities into earth coordinates. The accuracy of the ADCP velocities mainly depends on the quality of the position fixes and the ship's heading data. Further errors stem from a misalignment of the transducer with the ship's centerline. The ADCP data were processed using the Ocean Surveyor Sputum Interpreter (OSSI) software developed by GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel. The reference layer was set to avoid near surface effects. The averaging interval was set to 120 seconds.Sampling interval setting: 2s; Number of bins: 80; Bin length: 4m; Pulse length: 4m; Blank beyond transmit length: 4m.Data processing setting: Upper depth of reference layer: 30m; Lower depth of reference layer: 80m; Time average: 120s; Misalignment angle: 0.900; amplitude: 1.0240.The precision for single ping and 4m cell size reported by TRDI is 0.30m/s. Resulting from the single ping precision and the number of pings (most of the time 36) during 120seconds the velocity accuracy is nearly 0.05m/s.(Velocity accuracy = single ping precision divided by square root of the number of pings)
DOI: 10.1594/pangaea.896277
title: Whale sightings during POLARSTERN cruise PS102

description: Date/Time is given in UTC. Certainty of identification: definite if observer clearly identified the species. The number of individuals is binned according to the options given in the data acquisition software: 1, 2, 3, less equal 5, less equal 10, greater than 10, greater than 20. More precise values may exist, due to observer comments.
DOI: 10.1594/pangaea.896283
title: Whale sightings during POLARSTERN cruise PS105

description: Date/Time is given in UTC. Certainty of identification: definite if observer clearly identified the species. The number of individuals is binned according to the options given in the data acquisition software: 1, 2, 3, less equal 5, less equal 10, greater than 10, greater than 20. More precise values may exist, due to observer comments.
DOI: 10.1594/pangaea.896173
title: Documentation of sediment core PS115/2_11-1
DOI: 10.1594/pangaea.897872
title: Links to master tracks in different resolutions of POLARSTERN cruise PS116, Bremerhaven - Cape Town, 2018-11-11 - 2018-12-11
DOI: 10.1594/pangaea.896174
title: Documentation of sediment core PS115/2_11-3
DOI: 10.1594/pangaea.896175
title: Documentation of sediment core PS115/2_12-1
DOI: 10.1594/pangaea.896176
title: Documentation of sediment core PS115/2_12-2
DOI: 10.1594/pangaea.896177
title: Documentation of sediment core PS115/2_13-1
DOI: 10.1594/pangaea.896178
title: Documentation of sediment core PS115/2_13-2
DOI: 10.1594/pangaea.896179
title: Documentation of sediment core PS115/2_14-1
DOI: 10.1594/pangaea.896180
title: Documentation of sediment core PS115/2_14-3
DOI: 10.1594/pangaea.896181
title: Documentation of sediment core PS115/2_2-2
DOI: 10.1594/pangaea.896182
title: Documentation of sediment core PS115/2_20-1
DOI: 10.1594/pangaea.896183
title: Documentation of sediment core PS115/2_23-1
DOI: 10.1594/pangaea.896184
title: Documentation of sediment core PS115/2_24-1
DOI: 10.1594/pangaea.896185
title: Documentation of sediment core PS115/2_25-1
DOI: 10.1594/pangaea.896186
title: Documentation of sediment core PS115/2_26-2
DOI: 10.1594/pangaea.896187
title: Documentation of sediment core PS115/2_28-3
DOI: 10.1594/pangaea.896188
title: Documentation of sediment core PS115/2_28-2
DOI: 10.1594/pangaea.896189
title: Documentation of sediment core PS115/2_30-2
DOI: 10.1594/pangaea.896190
title: Documentation of sediment core PS115/2_30-4
DOI: 10.1594/pangaea.896191
title: Documentation of sediment core PS115/2_32-1
DOI: 10.1594/pangaea.896192
title: Documentation of sediment core PS115/2_36-1
DOI: 10.1594/pangaea.896193
title: Documentation of sediment core PS115/2_39-1
DOI: 10.1594/pangaea.896194
title: Documentation of sediment core PS115/2_41-1
DOI: 10.1594/pangaea.896195
title: Documentation of sediment core PS115/2_44-1
DOI: 10.1594/pangaea.896196
title: Documentation of sediment core PS115/2_44-2
DOI: 10.1594/pangaea.896197
title: Documentation of sediment core PS115/2_46-1
DOI: 10.1594/pangaea.896198
title: Documentation of sediment core PS115/2_47-1
DOI: 10.1594/pangaea.896199
title: Documentation of sediment core PS115/2_50-2
DOI: 10.1594/pangaea.896200
title: Documentation of sediment core PS115/2_51-1
DOI: 10.1594/pangaea.896201
title: Documentation of sediment core PS115/2_8-1
DOI: 10.1594/pangaea.897232
title: Alkenone derived SST from sediment core M77/2_003-2
DOI: 10.1594/pangaea.897233
title: Alkenone derived SST from sediment core M77/2_005-3
DOI: 10.1594/pangaea.897234
title: Alkenone derived SST from sediment core M77/2_024-5
DOI: 10.1594/pangaea.897235
title: Alkenone derived SST from sediment core M77/2_029-3
DOI: 10.1594/pangaea.897236
title: Alkenone derived SST from sediment core M135_252-3
DOI: 10.1594/pangaea.897237
title: Alkenone derived SST from sediment core M135_254-3
DOI: 10.1594/pangaea.897238
title: XRF measurements from sediment core M135_252-3
DOI: 10.1594/pangaea.897301
title: Profile of sediment echo sounding during POLARSTERN cruise PS111 with links to ParaSound data files

description: File format description see: Data Acquisition of ATLAS PARASTORE, Atlas Hydrographic (2007), Operator Manual ATLAS PARASTORE, Doc. Id.: ED 6006 G 212:/Version: 4.0/Edition: 05/2007, hdl:10013/epic.35589.d001
DOI: 10.1594/pangaea.897341
title: Secchi depths during POLARSTERN cruise ANT-III/3 (PS06)
DOI: 10.1594/pangaea.897342
title: Abundance of dominant phytoplankton taxa during POLARSTERN cruise ANT-III/3 (PS06)
DOI: 10.1594/pangaea.897408
title: Water vapour isotopes analyser calibrated data from POLARSTERN cruise PS95.1 (ANT-XXXI/1.1)
DOI: 10.1594/pangaea.897409
title: Water vapour isotopes analyser calibrated data from POLARSTERN cruise PS95.2 (ANT-XXXI/1.2)
DOI: 10.1594/pangaea.895728
title: Documentation of sediment core PS111_13-4
DOI: 10.1594/pangaea.895729
title: Documentation of sediment core PS111_15-2
DOI: 10.1594/pangaea.895730
title: Documentation of sediment core PS111_40-1
DOI: 10.1594/pangaea.895731
title: Documentation of sediment core PS111_42-2
DOI: 10.1594/pangaea.895732
title: Documentation of sediment core PS111_53-2
DOI: 10.1594/pangaea.895735
title: Documentation of sediment core PS1991-1
DOI: 10.1594/pangaea.895736
title: Documentation of sediment core PS1998-1
DOI: 10.1594/pangaea.895737
title: Dropstone of ice station PS1998-2
DOI: 10.1594/pangaea.895739
title: Documentation of sediment core PS2003-4
DOI: 10.1594/pangaea.895754
title: Physical oceanography during Valdivia cruise VA72

description: Karbe, Ludwig (1988): Hydrographic observations in the North Sea and Irish Sea during Valdivia cruise 72 from 1. - 22. July 1988.
DOI: 10.1594/pangaea.897084
title: Planktic foraminiferal Mg/Ca ratios of Globigerinoides ruber of sediment core SO164-03-4 recovered during SONNE cruise SO164
DOI: 10.1594/pangaea.897087
title: Planktic foraminiferal Mg/Ca ratios of Globorotalia truncatulinoides of sediment core SO164-03-4 recovered during SONNE cruise SO164
DOI: 10.1594/pangaea.895984
title: Whale sightings during POLARSTERN cruise PS103

description: Date/Time is given in UTC. Certainty of identification: definite if observer clearly identified the species. The number of individuals is binned according to the options given in the data acquisition software: 1, 2, 3, less equal 5, less equal 10, greater than 10, greater than 20. More precise values may exist, due to observer comments.
DOI: 10.1594/pangaea.896841
title: Whale sightings during POLARSTERN cruise PS98 (ANT-XXXI/4)

description: Date/Time is given in UTC. Certainty of identification: definite if observer clearly identified the species. The number of individuals is binned according to the options given in the data acquisition software: 1, 2, 3, less equal 5, less equal 10, greater than 10, greater than 20. More precise values may exist, due to observer comments.
DOI: 10.1594/pangaea.896926
title: Physical oceanography measured on water bottle samples during POLARSTERN cruise PS106/1 (ARK-XXXI/1.1)
DOI: 10.1594/pangaea.897519
title: Profile of sediment echo sounding during POLARSTERN cruise ARK-XI/4 (PS30) with links to ParaSound raw data

description: Parasound raw data are provided in *.ps3-format in zip-archives ordered by date/time.
DOI: 10.1594/pangaea.897562
title: Water vapour isotopes analyser calibrated data from POLARSTERN cruise PS102
DOI: 10.1594/pangaea.897563
title: Water vapour isotopes analyser calibrated data from POLARSTERN cruise PS103
DOI: 10.1594/pangaea.897566
title: Water vapour isotopes analyser calibrated data from POLARSTERN cruise PS106
DOI: 10.1594/pangaea.896627
title: Abundance of megafauna collected by Agassiz trawl during POLARSTERN cruise PS80 (ARK-XXVII/3, IceArc)

description: During the cruise ARK-XXVII/3 sampling of the megafauna was conducted by the Agassiz trawl (AGT) at seven stations. Agassiz trawls were taken along transects after the photographic survey by OFOS when the ice conditions were appropriate to obtain specimens to verify taxonomic identifications based on images. Trawl samples were washed through a sieve with 1 mm mesh size, sorted and preserved in 4% buffered formaldehyde. Some specimens with calcareous skeleton were preserved in 80% ethanol for taxonomic identifications.
DOI: 10.1594/pangaea.896629
title: Biomass of megafauna collected by Agassiz trawl during POLARSTERN cruise PS80 (ARK-XXVII/3, IceArc)

description: During the cruise ARK-XXVII/3 sampling of the megafauna was conducted by the Agassiz trawl (AGT) at seven stations. Agassiz trawls were taken along transects after the photographic survey by OFOS when the ice conditions were appropriate to obtain specimens to verify taxonomic identifications based on images. Also using the retrieved AGT samples wet biomass was estimated for each transect. Trawl samples were washed through a sieve with 1 mm mesh size, sorted and preserved in 4% buffered formaldehyde. Some specimens with calcareous skeleton were preserved in 80% ethanol for taxonomic identifications.
DOI: 10.1594/pangaea.896638
title: Abundance of megafauna based on OFOS photographic survey during POLARSTERN cruise PS80 (ARK-XXVII/3, IceArc)

description: A photographic survey was carried out during the expedition ARK-XXVII/3 to the Nansen and Amundsen basins. The seafloor was photographed using a towed Ocean Floor Observation System (OFOS). Nine transects were performed: four in the Nansen Basin between 83-84°N and 18-110°E at depths 3571-4066 m, and five in the Amundsen Basin between 83-89°N and 56-131°E at depths 4041-4384 m. All images were analysed and stored using the image analysis program and database BIIGLE (www.BIIGLE.de). The laser points were used for calculation of the seafloor surface area on images. Visible megafauna was counted and identified to the lowest possible taxonomic level. Taxonomic identifications were made with the assistance of experts. The following taxa/organisms were excluded from statistical analyses: infauna represented only by surface traces, gelatinous zooplankton, small-size organisms (&lt; 1 cm) and organisms that could not be identified at least to the phylum level.
DOI: 10.1594/pangaea.897958
title: Ice and snow thickness measurements during POLARSTERN cruise PS92 ice stations

description: During the PS92 cruise, GEM-2 (ice thickness) and magnaprobe (snow thickness) surveys were made during ice stations. A detailed list of performed GEM-2 and magna probe surveys is given in the cruise report (Peeken 2016). The data was used to make assumptions on the stability of the floe, as well as to get insight into the ice and snow thickness distribution at the ROV and dive sides. For further development of the method of EM sea ice thickness retrieval, GEM-2 data were acquired on 2 deformed sea ice structures along 40 meter transects. Round about 260 bore holes were drilled in order to measure freebord and sea ice thickness and validate the GEM-2 data. Snow thickness information were obtained with the magnaprobe.
DOI: 10.1594/pangaea.897987
title: Profile of sediment echo sounding during POLARSTERN cruise ANT-XI/4 with links to ParaSound graphic files

description: The Parasound profile of cruise ANT-XI/4 was originally recorded on 22 paper rolls. Roll 15 is missing. Each roll was digitized using a scanner "Océ CS 4044 Colour System" by SAGA GmbH (http://www.digitalarchivieren.de). Resulting 21 files are stored in tif-format with a resolution of 200 dpi and were zipped to reduce its size by about 30%.
DOI: 10.1594/pangaea.898031
title: Trace metal concentration from water samples during METEOR cruise M77/3

description: Dissolved iron (DFe) concentrations in oxygen minimum zones (OMZs) of Eastern Boundary Upwelling Systems are enhanced as a result of high supply rates from anoxic sediments. However, pronounced variations in DFe concentrations in anoxic coastal waters of the Peruvian OMZ indicate that there are factors in addition to dissolved oxygen concentrations (O2) that control Fe cycling. Our study demonstrates that sediment-derived reduced Fe (Fe(II)) forms the main DFe fraction in the anoxic/euxinic water column off Peru, which is responsible for DFe accumulations of up to 200 nmol L-1. Lowest DFe values were observed in anoxic shelf waters in the presence of nitrate and nitrite. This reflects oxidation of sediment-sourced Fe(II) associated with nitrate/nitrite reduction and subsequent removal as particulate Fe(III) oxyhydroxides. Unexpectedly, the highest DFe levels were observed in waters with elevated concentrations of hydrogen sulfide (up to 4 µmol L-1) and correspondingly depleted nitrate/nitrite concentrations (&lt;0.18 µmol L-1). Under these conditions, Fe removal was reduced through stabilization of Fe(II) as aqueous iron sulfide (FeSaqu) which comprises complexes (e.g., FeSH+) and clusters (e.g., Fe2S2|4H2O). Sulfidic events on the Peruvian shelf consequently enhance Fe availability, and may increase in frequency in future due to projected expansion and intensification of OMZs.
description: Subsurface seawater samples were collected with 8L Teflon coated GO-FLO samplers that were deployed on the metal free cable of the Meteor. #Sample treatment at sea: #Samples were filtered through 0.2 um polycarbonate filters in a class 5 clean container #After filtration the samples were acidified with HCl (1 mL 6 M into 1L SW), final pH was below 2. #All work was performed under clean air conditions in a Class 5 (Old Class 100) laminar flow hood. #Measurement: #Trace metal concentrations were measured by GF-AAS using the method described in Grasshoff et al. (1999). #Quality Flag: #WOCE Bottle Samples # 0.000 denotes below detection limit (varies by element) # Zn data not blank corrected
description: Supplement to: Schlosser, Christian; Streu, Peter; Frank, Martin; Lavik, Gaute; Croot, Peter L; Dengler, Marcus; Achterberg, Eric Pieter (2018): H2S events in the Peruvian oxygen minimum zone facilitate enhanced dissolved Fe concentrations. Scientific Reports, 8(1)
DOI: 10.1594/pangaea.897874
title: Rare earth element (REE) concentrations from bulk sediment leachates of sediment core AMD0214-02PC from the Beaufort sea margin
DOI: 10.1594/pangaea.898288
title: Carbonate dissolution observed on surface sediment samples from the Norwegian-Greenland Sea

description: This data set contains carbonate dissolution indices as well as calcium carbonate content values measured on surface sediment samples from the Norwegian-Greenland Sea, which were investigated to reconstruct the spatial distribution of recent carbonate dissolution on the sea-floor.
DOI: 10.1594/pangaea.898355
title: Foraminifera assemblages from POLARSTERN cruise ARK-X/2 sampled at the central East Greenland shelf (Foster Bugt)

description: The relatively fresh and cold East Greenland Current (EGC) connects the Arctic with the subpolar North Atlantic Ocean. Its strength and influence on the freshwater balance in the North Atlantic affects both the Subpolar Gyre dynamics and deep convection in the Labrador Sea. Enhanced freshwater and sea-ice expansion in the subpolar North Atlantic is suggested to modify the northward heat transport within the North Atlantic Current. High-resolution palaeoceanographic reconstructions, based on planktic and benthic foraminifera assemblage data, from the central East Greenland shelf (Foster Bugt) reveal distinct centennial to millennial-scale oceanographic variability that relates to climatic changes during the mid to late Holocene (the last c. 6.3 ka BP). Our data highlight intervals of cooling and freshening of the polar surface EGC waters that accompany warming in the subsurface Atlantic waters, which are a combination of chilled Atlantic Intermediate Water (AIW) from the Arctic Ocean and of the Return Atlantic Current (RAC) from the West Spitsbergen Current (WSC). Mid Holocene thermal optimum conditions prevailed until c. 4.5 ka BP. A thin/absent surface Polar Water layer, low drift/sea-ice occurrence and strong contribution of recirculating warm Atlantic waters at the subsurface, suggest a relatively weak EGC during this period. Subsequently, between 1.4 and 4.5 ka BP, the water column became well stratified as the surface Polar Water layer thickened and cooled, indicating a strong EGC. This EGC strengthening parallelled enhanced subsurface chilled AIW contribution from the Arctic Ocean after c. 4.5 ka BP, which culminated from 1.4 to 2.3 ka BP. This coincides with warming identified in earlier work of the North Atlantic Current, the Irminger Current, and the West Greenland Current. We link the enhanced contribution of chilled AtlanticWater during this period to the time of the 'RomanWarm Period'. The observed warming offshore East Greenland, centred at c. 1.8 ka BP, likely occurred in response to changes in the interactions of i) a weakened Subpolar Gyre; ii) increased northward heat advection in the North Atlantic Current, and iii) a predominant positive North Atlantic and Arctic Oscillation mode, prevailing during the time of the Roman Warm Period.
description: Supplement to: Perner, Kerstin; Moros, Matthias; Lloyd, Jeremy M; Jansen, Eystein; Stein, Ruediger (2015): Mid to late Holocene strengthening of the East Greenland Current linked to warm subsurface Atlantic water. Quaternary Science Reviews, 129, 296-307
DOI: 10.1594/pangaea.899085
title: Presence and absence records of benthic taxa from trawl samples taken in the Weddell Sea (Antarctica) and neighbouring seas during POLARSTERN cruises ANT-VII/4, ANT-IX/3, ANT-XIII/3, ANT-XV/3, ANT-XVII/3 and ANT-XXI/2 between 1989 and 2004

description: The dataset comprises a total of 11,020 records of presence and absence for 58 benthic invertebrate taxa and fish from 190 trawl samples (Agassiz trawl, bottom trawl, Rauschert dredge, benthopelagic trawl). The dataset was collected on the shelf and slope of the eastern Weddell Sea and Lazarev Sea, near Bouvet Island and the region at the north western tip of the Antarctic Peninsula (depth range: 64 - 2315 m) between 1989 and 2004 onboard "Polarstern". Cruises ANT VII/4 (1989), ANT IX/3 (1990/91), ANT XIII/3 (1996), ANT XV/3 (1998), ANT XVII/3 (2000) and ANT XXI/2 (2003/2004) contributed to the data collection.
DOI: 10.1594/pangaea.898549
title: Reflectance measurements (Ocean Optics STS-VIS) of different surface types from Arctic sea ice acquired during POLARSTERN cruise PS106

description: Ocean Optics measurements are in units of irradiance reflectance and were corrected for irradiance changes. All spectra of one measurement have the same timestamp. For ROIs 07B, 07C and 15A, positions of each measurement can be localized by joining the GPS data with the spectral data on the datetime of the measurement. For ROI 09A, GPS positions have been acquired after the spectral measurements. For this data set, only the entire data set can be localized by a set of GPS positions.
DOI: 10.1594/pangaea.898550
title: Reflectance measurements (ASD LabSpec5000) of different surface types from Arctic sea ice acquired during POLARSTERN cruise PS106

description: ASD measurements are in units of irradiance reflectance. Every spectrum has an individual timestamp. Positions of each spectrum can be localized by joining the GPS data with the spectral data on the datetime of the measurement.
DOI: 10.1594/pangaea.898551
title: Remote sensing reflectance measurements (RAMSES) of open water acquired during POLARSTERN cruise PS106

description: The RAMSES data set contains the minimum, mean and maximum remote sensing reflectance of a measurement cycle. The position of this data set equals the position of RV POLARSTERN.