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  • American Physical Society  (663,490)
  • Oxford University Press  (428,983)
  • PANGAEA  (423,337)
  • Cell Press  (242,170)
  • Blackwell Publishing Ltd  (182,058)
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  • 1
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    Mass-change And Geosciences International Constellation (MAGIC) expected impact on science and applications (2024)
    Oxford University Press
    Details
    Publication Date: 2024-07-02
    Description: The joint ESA/NASA Mass-change And Geosciences International Constellation (MAGIC) has the objective to extend time-series from previous gravity missions, including an improvement of accuracy and spatio-temporal resolution. The long-term monitoring of Earth’s gravity field carries information on mass change induced by water cycle, climate change and mass transport processes between atmosphere, cryosphere, oceans and solid Earth. MAGIC will be composed of two satellite pairs flying in different orbit planes. The NASA/DLR-led first pair (P1) is expected to be in a near-polar orbit around 500 km of altitude; while the second ESA-led pair (P2) is expected to be in an inclined orbit of 65°–70° at approximately 400 km altitude. The ESA-led pair P2 Next Generation Gravity Mission shall be launched after P1 in a staggered manner to form the MAGIC constellation. The addition of an inclined pair shall lead to reduction of temporal aliasing effects and consequently of reliance on de-aliasing models and post-processing. The main novelty of the MAGIC constellation is the delivery of mass-change products at higher spatial resolution, temporal (i.e. subweekly) resolution, shorter latency and higher accuracy than the Gravity Recovery and Climate Experiment (GRACE) and Gravity Recovery and Climate Experiment Follow-On (GRACE-FO). This will pave the way to new science applications and operational services. In this paper, an overview of various fields of science and service applications for hydrology, cryosphere, oceanography, solid Earth, climate change and geodesy is provided. These thematic fields and newly enabled applications and services were analysed in the frame of the initial ESA Science Support activities for MAGIC. The analyses of MAGIC scenarios for different application areas in the field of geosciences confirmed that the double-pair configuration will significantly enlarge the number of observable mass-change phenomena by resolving smaller spatial scales with an uncertainty that satisfies evolved user requirements expressed by international bodies such as IUGG. The required uncertainty levels of dedicated thematic fields met by MAGIC unfiltered Level-2 products will benefit hydrological applications by recovering more than 90 per cent of the major river basins worldwide at 260 km spatial resolution, cryosphere applications by enabling mass change signal separation in the interior of Greenland from those in the coastal zones and by resolving small-scale mass variability in challenging regions such as the Antarctic Peninsula, oceanography applications by monitoring meridional overturning circulation changes on timescales of years and decades, climate applications by detecting amplitude and phase changes of Terrestrial Water Storage after 30 yr in 64 and 56 per cent of the global land areas and solid Earth applications by lowering the Earthquake detection threshold from magnitude 8.8 to magnitude 7.4 with spatial resolution increased to 333 km.
    Description: Published
    Description: 1288–1308
    Description: JCR Journal
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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    PAPER (OA)
  • 2
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    Hyperspectral absorption coefficient measurements during the cruise HE503 with RV HEINCKE (2021)
    PANGAEA
    Details
    Publication Date: 2024-07-02
    Description: This dataset was collected during the cruise HE503 (22.02.2018 - 01.03.2018) with RV HEINCKE from Bremerhaven, Germany to Bremerhaven, Germany. It contains absorption coefficients [m-1] from water constituents in a range of 400 to 710 nm (2 nm resolution). In total, 24 stations have been sampled. Where the water column was mixed, one sample was taken from approx. 5 m. In case of stratified water or chlorophyll-a maxima present, additional samples from greater depths were taken. The water samples were fractionated by filtration to investigate the absorption with respect to size classes. Thus, data from unfiltered samples are available as well as data from water that passed a 20 µm, 2 µm, and 0.2 µm filter, respectively (denoted as a_tot, a_20µm, a_2µm, and a_cdom). The absorption coefficient measurements were performed with a point-source integrating-cavity absorption meter (PSICAM) with a sample volume of approx. 400 ml. The specifications of the PSICAM, relevant publications, information regarding the measurements, calibration of the instrument, and data correction are provided in a separate document. Raw data are available on request from the authors. Chief Scientist of HE503: Dr. Thomas H. Badewien / Dr. Jochen Wollschläger , Institute for Chemistry and Biology of the Marine Environment (ICBM) Work related to Coastal ocean darkening - Light availability in the past and future marine environment (COD)
    Keywords: absorption coefficient; Absorption coefficient, 400 nm; Absorption coefficient, 402 nm; Absorption coefficient, 404 nm; Absorption coefficient, 406 nm; Absorption coefficient, 408 nm; Absorption coefficient, 410 nm; Absorption coefficient, 412 nm; Absorption coefficient, 414 nm; Absorption coefficient, 416 nm; Absorption coefficient, 418 nm; Absorption coefficient, 420 nm; Absorption coefficient, 422 nm; Absorption coefficient, 424 nm; Absorption coefficient, 426 nm; Absorption coefficient, 428 nm; Absorption coefficient, 430 nm; Absorption coefficient, 432 nm; Absorption coefficient, 434 nm; Absorption coefficient, 436 nm; Absorption coefficient, 438 nm; Absorption coefficient, 440 nm; Absorption coefficient, 442 nm; Absorption coefficient, 444 nm; Absorption coefficient, 446 nm; Absorption coefficient, 448 nm; Absorption coefficient, 450 nm; Absorption coefficient, 452 nm; Absorption coefficient, 454 nm; Absorption coefficient, 456 nm; Absorption coefficient, 458 nm; Absorption coefficient, 460 nm; Absorption coefficient, 462 nm; Absorption coefficient, 464 nm; Absorption coefficient, 466 nm; Absorption coefficient, 468 nm; Absorption coefficient, 470 nm; Absorption coefficient, 472 nm; Absorption coefficient, 474 nm; Absorption coefficient, 476 nm; Absorption coefficient, 478 nm; Absorption coefficient, 480 nm; Absorption coefficient, 482 nm; Absorption coefficient, 484 nm; Absorption coefficient, 486 nm; Absorption coefficient, 488 nm; Absorption coefficient, 490 nm; Absorption coefficient, 492 nm; Absorption coefficient, 494 nm; Absorption coefficient, 496 nm; Absorption coefficient, 498 nm; Absorption coefficient, 500 nm; Absorption coefficient, 502 nm; Absorption coefficient, 504 nm; Absorption coefficient, 506 nm; Absorption coefficient, 508 nm; Absorption coefficient, 510 nm; Absorption coefficient, 512 nm; Absorption coefficient, 514 nm; Absorption coefficient, 516 nm; Absorption coefficient, 518 nm; Absorption coefficient, 520 nm; Absorption coefficient, 522 nm; Absorption coefficient, 524 nm; Absorption coefficient, 526 nm; Absorption coefficient, 528 nm; Absorption coefficient, 530 nm; Absorption coefficient, 532 nm; Absorption coefficient, 534 nm; Absorption coefficient, 536 nm; Absorption coefficient, 538 nm; Absorption coefficient, 540 nm; Absorption coefficient, 542 nm; Absorption coefficient, 544 nm; Absorption coefficient, 546 nm; Absorption coefficient, 548 nm; Absorption coefficient, 550 nm; Absorption coefficient, 552 nm; Absorption coefficient, 554 nm; Absorption coefficient, 556 nm; Absorption coefficient, 558 nm; Absorption coefficient, 560 nm; Absorption coefficient, 562 nm; Absorption coefficient, 564 nm; Absorption coefficient, 566 nm; Absorption coefficient, 568 nm; Absorption coefficient, 570 nm; Absorption coefficient, 572 nm; Absorption coefficient, 574 nm; Absorption coefficient, 576 nm; Absorption coefficient, 578 nm; Absorption coefficient, 580 nm; Absorption coefficient, 582 nm; Absorption coefficient, 584 nm; Absorption coefficient, 586 nm; Absorption coefficient, 588 nm; Absorption coefficient, 590 nm; Absorption coefficient, 592 nm; Absorption coefficient, 594 nm; Absorption coefficient, 596 nm; Absorption coefficient, 598 nm; Absorption coefficient, 600 nm; Absorption coefficient, 602 nm; Absorption coefficient, 604 nm; Absorption coefficient, 606 nm; Absorption coefficient, 608 nm; Absorption coefficient, 610 nm; Absorption coefficient, 612 nm; Absorption coefficient, 614 nm; Absorption coefficient, 616 nm; Absorption coefficient, 618 nm; Absorption coefficient, 620 nm; Absorption coefficient, 622 nm; Absorption coefficient, 624 nm; Absorption coefficient, 626 nm; Absorption coefficient, 628 nm; Absorption coefficient, 630 nm; Absorption coefficient, 632 nm; Absorption coefficient, 634 nm; Absorption coefficient, 636 nm; Absorption coefficient, 638 nm; Absorption coefficient, 640 nm; Absorption coefficient, 642 nm; Absorption coefficient, 644 nm; Absorption coefficient, 646 nm; Absorption coefficient, 648 nm; Absorption coefficient, 650 nm; Absorption coefficient, 652 nm; Absorption coefficient, 654 nm; Absorption coefficient, 656 nm; Absorption coefficient, 658 nm; Absorption coefficient, 660 nm; Absorption coefficient, 662 nm; Absorption coefficient, 664 nm; Absorption coefficient, 666 nm; Absorption coefficient, 668 nm; Absorption coefficient, 670 nm; Absorption coefficient, 672 nm; Absorption coefficient, 674 nm; Absorption coefficient, 676 nm; Absorption coefficient, 678 nm; Absorption coefficient, 680 nm; Absorption coefficient, 682 nm; Absorption coefficient, 684 nm; Absorption coefficient, 686 nm; Absorption coefficient, 688 nm; Absorption coefficient, 690 nm; Absorption coefficient, 692 nm; Absorption coefficient, 694 nm; Absorption coefficient, 696 nm; Absorption coefficient, 698 nm; Absorption coefficient, 700 nm; Absorption coefficient, 702 nm; Absorption coefficient, 704 nm; Absorption coefficient, 706 nm; Absorption coefficient, 708 nm; Absorption coefficient, 710 nm; Coastal ocean darkening – Light availability in the past and future marine environment; COD; CTD/Rosette; CTD-RO; DATE/TIME; DEPTH, water; ELEVATION; Event label; Filtration under low vacuum (〈 200 mbar); Fraction, description; German Bight; HE503; HE503_11-1; HE503_13-1; HE503_15-1; HE503_17-1; HE503_19-1; HE503_2-1; HE503_21-1; HE503_22-1; HE503_24-1; HE503_26-1; HE503_29-1; HE503_30-1; HE503_32-1; HE503_34-1; HE503_36-1; HE503_37-2; HE503_39-1; HE503_41-1; HE503_42-1; HE503_44-1; HE503_46-1; HE503_5-1; HE503_7-1; HE503_9-1; Heincke; hyperspectral; ICBM; Identification; Institut für Chemie und Biologie des Meeres; IOP; LATITUDE; LONGITUDE; North Sea; Point-source integrating-cavity absorption meter; PSICAM; Station label
    Type: Dataset
    Format: text/tab-separated-values, 17490 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
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    Hyperspectral absorption coefficient measurements during the cruise HE527 with RV HEINCKE (2021)
    PANGAEA
    Details
    Publication Date: 2024-07-02
    Description: This dataset was collected during the cruise HE527 (19.03.2019 - 31.03.2019) with RV HEINCKE from Bremerhaven, Germany to Bremerhaven, Germany. It contains absorption coefficients [m-1] from water constituents in a range of 400 to 710 nm (2 nm resolution). In total, 34 stations have been sampled. Where the water column was mixed, one sample was taken from approx. 5 m. In case of stratified water or chlorophyll-a maxima present, additional samples from greater depths were taken. The water samples were fractionated by filtration to investigate the absorption with respect to size classes. Thus, data from unfiltered samples are available as well as data from water that passed a 20 µm, 2 µm, and 0.2 µm filter, respectively (denoted as a_tot, a_20µm, a_2µm, and a_cdom). The absorption coefficient measurements were performed with a point-source integrating-cavity absorption meter (PSICAM) with a sample volume of approx. 400 ml. The specifications of the PSICAM, relevant publications, information regarding the measurements, calibration of the instrument, and data correction are provided in a separate document. Raw data are available on request from the authors. Supplementary Information attached. Chief Scientist of HE527: Dr. Thomas Badewien, Institute for Chemistry and Biology of the Marine Environment (ICBM). Work related to Coastal ocean darkening - Light availability in the past and future marine environment (COD).
    Keywords: absorption coefficient; Absorption coefficient, 400 nm; Absorption coefficient, 402 nm; Absorption coefficient, 404 nm; Absorption coefficient, 406 nm; Absorption coefficient, 408 nm; Absorption coefficient, 410 nm; Absorption coefficient, 412 nm; Absorption coefficient, 414 nm; Absorption coefficient, 416 nm; Absorption coefficient, 418 nm; Absorption coefficient, 420 nm; Absorption coefficient, 422 nm; Absorption coefficient, 424 nm; Absorption coefficient, 426 nm; Absorption coefficient, 428 nm; Absorption coefficient, 430 nm; Absorption coefficient, 432 nm; Absorption coefficient, 434 nm; Absorption coefficient, 436 nm; Absorption coefficient, 438 nm; Absorption coefficient, 440 nm; Absorption coefficient, 442 nm; Absorption coefficient, 444 nm; Absorption coefficient, 446 nm; Absorption coefficient, 448 nm; Absorption coefficient, 450 nm; Absorption coefficient, 452 nm; Absorption coefficient, 454 nm; Absorption coefficient, 456 nm; Absorption coefficient, 458 nm; Absorption coefficient, 460 nm; Absorption coefficient, 462 nm; Absorption coefficient, 464 nm; Absorption coefficient, 466 nm; Absorption coefficient, 468 nm; Absorption coefficient, 470 nm; Absorption coefficient, 472 nm; Absorption coefficient, 474 nm; Absorption coefficient, 476 nm; Absorption coefficient, 478 nm; Absorption coefficient, 480 nm; Absorption coefficient, 482 nm; Absorption coefficient, 484 nm; Absorption coefficient, 486 nm; Absorption coefficient, 488 nm; Absorption coefficient, 490 nm; Absorption coefficient, 492 nm; Absorption coefficient, 494 nm; Absorption coefficient, 496 nm; Absorption coefficient, 498 nm; Absorption coefficient, 500 nm; Absorption coefficient, 502 nm; Absorption coefficient, 504 nm; Absorption coefficient, 506 nm; Absorption coefficient, 508 nm; Absorption coefficient, 510 nm; Absorption coefficient, 512 nm; Absorption coefficient, 514 nm; Absorption coefficient, 516 nm; Absorption coefficient, 518 nm; Absorption coefficient, 520 nm; Absorption coefficient, 522 nm; Absorption coefficient, 524 nm; Absorption coefficient, 526 nm; Absorption coefficient, 528 nm; Absorption coefficient, 530 nm; Absorption coefficient, 532 nm; Absorption coefficient, 534 nm; Absorption coefficient, 536 nm; Absorption coefficient, 538 nm; Absorption coefficient, 540 nm; Absorption coefficient, 542 nm; Absorption coefficient, 544 nm; Absorption coefficient, 546 nm; Absorption coefficient, 548 nm; Absorption coefficient, 550 nm; Absorption coefficient, 552 nm; Absorption coefficient, 554 nm; Absorption coefficient, 556 nm; Absorption coefficient, 558 nm; Absorption coefficient, 560 nm; Absorption coefficient, 562 nm; Absorption coefficient, 564 nm; Absorption coefficient, 566 nm; Absorption coefficient, 568 nm; Absorption coefficient, 570 nm; Absorption coefficient, 572 nm; Absorption coefficient, 574 nm; Absorption coefficient, 576 nm; Absorption coefficient, 578 nm; Absorption coefficient, 580 nm; Absorption coefficient, 582 nm; Absorption coefficient, 584 nm; Absorption coefficient, 586 nm; Absorption coefficient, 588 nm; Absorption coefficient, 590 nm; Absorption coefficient, 592 nm; Absorption coefficient, 594 nm; Absorption coefficient, 596 nm; Absorption coefficient, 598 nm; Absorption coefficient, 600 nm; Absorption coefficient, 602 nm; Absorption coefficient, 604 nm; Absorption coefficient, 606 nm; Absorption coefficient, 608 nm; Absorption coefficient, 610 nm; Absorption coefficient, 612 nm; Absorption coefficient, 614 nm; Absorption coefficient, 616 nm; Absorption coefficient, 618 nm; Absorption coefficient, 620 nm; Absorption coefficient, 622 nm; Absorption coefficient, 624 nm; Absorption coefficient, 626 nm; Absorption coefficient, 628 nm; Absorption coefficient, 630 nm; Absorption coefficient, 632 nm; Absorption coefficient, 634 nm; Absorption coefficient, 636 nm; Absorption coefficient, 638 nm; Absorption coefficient, 640 nm; Absorption coefficient, 642 nm; Absorption coefficient, 644 nm; Absorption coefficient, 646 nm; Absorption coefficient, 648 nm; Absorption coefficient, 650 nm; Absorption coefficient, 652 nm; Absorption coefficient, 654 nm; Absorption coefficient, 656 nm; Absorption coefficient, 658 nm; Absorption coefficient, 660 nm; Absorption coefficient, 662 nm; Absorption coefficient, 664 nm; Absorption coefficient, 666 nm; Absorption coefficient, 668 nm; Absorption coefficient, 670 nm; Absorption coefficient, 672 nm; Absorption coefficient, 674 nm; Absorption coefficient, 676 nm; Absorption coefficient, 678 nm; Absorption coefficient, 680 nm; Absorption coefficient, 682 nm; Absorption coefficient, 684 nm; Absorption coefficient, 686 nm; Absorption coefficient, 688 nm; Absorption coefficient, 690 nm; Absorption coefficient, 692 nm; Absorption coefficient, 694 nm; Absorption coefficient, 696 nm; Absorption coefficient, 698 nm; Absorption coefficient, 700 nm; Absorption coefficient, 702 nm; Absorption coefficient, 704 nm; Absorption coefficient, 706 nm; Absorption coefficient, 708 nm; Absorption coefficient, 710 nm; Coastal ocean darkening – Light availability in the past and future marine environment; COD; CTD/Rosette; CTD-RO; DATE/TIME; DEPTH, water; ELEVATION; Event label; Filtration under low vacuum (〈 200 mbar); Fraction, description; German Bight; HE527; HE527_10-1; HE527_12-1; HE527_14-1; HE527_16-1; HE527_18-1; HE527_20-1; HE527_2-1; HE527_22-1; HE527_24-2; HE527_26-1; HE527_28-1; HE527_30-1; HE527_3-1; HE527_32-1; HE527_34-1; HE527_36-1; HE527_38-1; HE527_42-1; HE527_43-1; HE527_44-1; HE527_45-1; HE527_46-1; HE527_47-1; HE527_48-1; HE527_49-1; HE527_50-1; HE527_5-1; HE527_51-1; HE527_53-1; HE527_55-1; HE527_57-1; HE527_58-1; HE527_60-1; HE527_62-1; HE527_64-1; HE527_66-1; HE527_68-1; HE527_70-1; HE527_7-1; Heincke; hyperspectral; ICBM; Identification; Institut für Chemie und Biologie des Meeres; IOP; LATITUDE; LONGITUDE; North Sea; Point-source integrating-cavity absorption meter; PSICAM; Station label
    Type: Dataset
    Format: text/tab-separated-values, 24327 data points
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    DATA PANGAEA
  • 4
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    Absorbance measurements of coloured dissolved organic matter during RV METEOR cruise M148/2 in the Benguela Upwelling System and Angola Gyre (2021)
    PANGAEA
    In:  Institute for Chemistry and Biology of the Marine Environment, Carl von Ossietzky Universität Oldenburg, Germany
    Details
    Publication Date: 2024-07-02
    Description: During RV METEOR cruise M148-2 in the Angola Gyre as well as the Benguela Upwelling System off the coast of Namibia water samples were taken from surface waters, deep chlorophyll maximum zone (DCM), oxygen depleted zone underneath the DCM and deeper waters. Here, we report the absorbance measurements of coloured dissolved organic matter (CDOM) that were conducted immediately after collection from the CTD rosette on board RV METEOR. The collected water samples were poured into 250 ml Schott glass bottles covered in aluminium foil creating dark containers. These glass bottles were left to reach room temperature for about 30 to 60 minutes. Filtration was completed using 25 mm Nuclepore syringe filters with pore sizes of 0.2 µm directly into a 10 cm quartz cuvette. This cuvette had been pre-rinsed three times with the sample before measurement (Garaba et al., 2014). A Shimadzu UV2700 spectrophotometer was used to determine the absorbance of the filtered samples over a wavelength range from 200 to 800 nm in 5 nm steps and Milli-Q was used as a reference. The provided dataset contains the raw absorption units averaged out of three measurements per sample.
    Keywords: Absorbance; Angola Gyre; Atlantic Ocean; Campaign; CDOM; CTD/Rosette; CTD-RO; DATE/TIME; DEPTH, water; ELEVATION; EreBUS; Event label; LATITUDE; LONGITUDE; M148/2; M148/2_202-1; M148/2_203-1; M148/2_204-1; M148/2_205-1; M148/2_206-1; M148/2_207-1; M148/2_208-1; M148/2_209-1; M148/2_210-1; M148/2_211-1; M148/2_212-1; M148/2_213-1; M148/2_214-1; M148/2_215-1; Meteor (1986); Optical water quality; Shimadzu photometer UV 2700 Serial No. A11675400798LP; Station label; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 8600 data points
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    DATA PANGAEA
  • 5
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    Master track of SONNE cruise SO292 in 1 sec resolution (zipped, 17.0 MB) (2022)
    PANGAEA
    In:  University of Hamburg, Germany
    Details
    Publication Date: 2024-07-02
    Description: Raw data acquired by position sensors on board RV SONNE during expedition SO292 were processed to receive a validated master track which can be used as reference of further expedition data. During SO292 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.
    Keywords: 1 sec resolution; CT; DAM_Underway; DAM Underway Research Data; ICECARB; SO292; SO292-track; Sonne_2; Underway cruise track measurements
    Type: Dataset
    Format: application/zip, 17.1 MBytes
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    DATA PANGAEA
  • 6
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    Tissue carbon, nitrogen and phosphorus composition of Euphausia superba and Salpa thompsoni from the northern Antarctic Peninsula (2023)
    PANGAEA
    Details
    Publication Date: 2024-07-02
    Description: Samples were collected between 03/26/2018 and 04/27/2018 around the northern tip of the Antarctic Peninsula (63° 0' 1.843'' S, 60° 0' 16.901''W) onboard the RV Polarstern during the PS112 campaign in order to identify the elemental composition and stoichiometry of the Antarctic krill (Euphausia superba) and salps (Salpa thompsoni). The sampling stations were situated in the survey grid of the Antarctic Marine Living Resources Program (AMLR). At the time of sampling, the study area was ice free and ambient Chlorophyll a levels were comparable to previous studies in this time frame (e.g. Schofield et al., 2017). The phytoplankton community was dominated by dinoflagellates, diatoms and prymnesiophytes, which is typical for autumn (March–May) around the NAP (Pauli et al., 2021). Krill and salps were sampled by using the 1.8 m² Isaacs-Kidd Midwater Trawl Net (IKMT) equipped with a 505 μm mesh which is suitable to collect both salps and krill in good condition. The net was towed obliquely to 170 m, or 20 m from the bottom, at a speed of 2 kts. From these tows, we collected 162 adult krill and 121 blastozooid salp individuals on board of which we analyzed 140 krill and 108 salp samples for their elemental content (total organic carbon, nitrogen and phosphorus). Size in mm (using graph paper, Seibert publisher) and stage of krill and salp individuals were determined on board before further processing. For size measurements of S. thompsoni, we used the oral atrial length. Total length of Antarctic krill was measured from the anterior margin of the eye to the tip of the telson, excluding the terminal spine. Prior to the elemental analysis, the digestive system of krill and salps was removed to avoid contamination of the tissue elemental composition by the elemental signature of the gut content. Salp individuals were immediately dissected on board after size measurements and frozen at -20 °C. Krill individuals were frozen on board and dissected later in the lab. Frozen krill and salp individuals were individually ground prior to the analyses using a pebble mill and homogenized with distilled water. Homogenization enabled us to take sub-samples of single individuals to analyze the total carbon, nitrogen, and phosphorus composition of the same specimen. For C/N analysis, 3 x 250 µl of the homogenate were transferred into pre-weighed tin capsules while the rest of the homogenized tissue was equally distributed into three pre-weighed glass tubes for phosphorus analysis. Tissue samples were dried at 70 °C for three weeks prior to analysis to minimize the effect of residual water bound in collagen. After drying, we measured the dry weight (DW) of all samples to obtain total individual DW for each specimen by using a high-resolution balance (Mettler Toledo, XP-26). The determination of dry weight in gelatinous zooplankton can be challenging, as DW may be overestimated due to residual water and salt. The DW measurements were therefore corrected for water content assuming that 13.5 % of the DW was residual water (Madin et al., 1981). his correction factor is based on previous calculations for residual water in salp body tissue. This conversion was only applied to our field data of S. thompsoni. The DW of E. superba was not corrected since crustacean zooplankton contains considerably less residual water in its tissue. Since the DW was not corrected for potential remaining salt the elemental content per DW of S. thompsoni should be considered as conservative. After drying, all C/N samples were sealed and analyzed using a CHN analyzer (Thermo, Flash EA 1112). The phosphorus samples were combusted at 450 °C for 5 hours and the ash-free dry weight (AFDW) was measured. Particulate organic phosphorus (POP) was measured photometrically by molybdate reaction after sulfuric acid and heat digestion at 90 °C, modified after (Grasshoff et al., 2009).
    Keywords: Abbreviation; ANT-XXXIII/3; Ash free dry mass; Biomass, ash free dry mass, per dry mass; Biomass as carbon; Biomass as nitrogen; Biomass as phosphorus; Body mass, dry; Calculated; Carbon, organic, total, per individual; Carbon, per dry mass; Carbon, total, per dry mass; Carbon/Nitrogen ratio; Carbon/Phosphorus ratio; Carbon and hydrogen and nitrogen (CHN) analyzer, Thermo Scientific, FlashEA 1112; Comparator balance, Mettler Toledo, XP26; Cruise/expedition; DATE/TIME; Drake Passage; Euphausia superba; Event label; Gear; IKMT; Isaac-Kid-Midwater Trawl; krill; LATITUDE; Length, total; Life stage; LONGITUDE; Nitrogen, organic, total, per individual; Nitrogen, per dry mass; Nitrogen, total, per dry mass; Nitrogen/Phosphorus ratio; Phosphorus, organic, total, per individual; Phosphorus, per dry mass; Phosphorus, total, per dry mass; Polarstern; Population Shift and Ecosystem Response – Krill vs. Salps; POSER; PS112; PS112_106-17; PS112_109-2; PS112_111-16; PS112_14-3; PS112_25-11; PS112_25-4; PS112_25-49; PS112_27-2; PS112_29-2; PS112_50-11; PS112_50-3; PS112_56-2; PS112_76-4; salps; Sample code/label; Scotia Sea; Sex; Southern Ocean; Species; Species, unique identification (URI); stoichiometry; Tunicata; Weddell Sea; West Antarctic Peninsula; Zooplankton
    Type: Dataset
    Format: text/tab-separated-values, 6696 data points
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    DATA PANGAEA
  • 7
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    Continuous bio-optical measurements of chloropyll a and turbidity along RV SONNE cruise SO287 (CONNECT) (2023)
    PANGAEA
    Details
    Publication Date: 2024-07-02
    Description: Underway chlorophyll-a and turbidity data were acquired during the SO287-CONNECT cruise on board the German Research Vessel SONNE. A detailed report describes the processing procedures, including scientific visualization and tabulation of the datasets. The SO287-CONNECT oceanographic campaign aimed to cross the North Atlantic Ocean from Las Palmas (Gran Canaria, Spain) to Guayaquil (Ecuador, in the Equatorial Pacific Ocean) between 11 December 2021 and 11 January 2022.
    Keywords: Biooptics; Chlorophyll a; chlorophyll-a; CONNECT; DAM_Underway; DAM Underway Research Data; DATE/TIME; DEPTH, water; FLU; Fluorometer; Fluorometer, WET Labs, ECO FLNTU; LATITUDE; LONGITUDE; Measurement container; Quality Control of Biogeochemical Measurements according to Jaccard et al. (2018); Quality flag, chlorophyll a; Quality flag, turbidity; Ship speed; SO287; SO287_0_Underway-5; Sonne_2; turbidity; Turbidity (Nephelometric turbidity unit); Underway Measurement
    Type: Dataset
    Format: text/tab-separated-values, 224136 data points
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    DATA PANGAEA
  • 8
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    Thermal performance assay of a plankton community from Helgoland Roads for an indoor mesocosm experiment  in March 2022 (2023)
    PANGAEA
    Details
    Publication Date: 2024-07-02
    Description: To choose the treatment temperatures for an indoor mesocosm temperature experiment at the ICBM in Wilhelmshaven (https://doi.pangaea.de/10.1594/PANGAEA.961155), a thermal performance curve assay was performed from the 8th of March until the 16th of March. It was started one day after filling the mesocosms with seawater from Helgoland Roads (https://deims.org/1e96ef9b-0915-4661-849f-b3a72f5aa9b1) by randomly spreading pooled sample water in 50 ml culture flasks across ten temperatures (3 °C to 30 °C in 3 °C steps) in triplicates. Their fluorescence (395/680 Excitation/Emission) was measured daily using a SYNERGY H1 microplate reader (BioTek, Winooski, Vermont, USA).
    Keywords: Blank; Bottle number; Changing Earth – Sustaining our Future; Chlorophyll a; community composition; DATE/TIME; Day of experiment; Diaphragm pump; coupled with pipe [covered with a 200 µm net]; Event label; HE593; HE593_SOT22; Heincke; Helgoland; Helmholtz_ChangingEarth; incubation experiment; Microplate reader, BioTek, Synergy H1; North Sea; phytoplankton; plankton community; Replicate; SOT22; spring bloom; thermal performance curve; Treatment: temperature; Type of study
    Type: Dataset
    Format: text/tab-separated-values, 1890 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 9
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    Snow covered digital elevation model and snow depth product (2019), Trail Valley Creek, NWT, Canada (2023)
    PANGAEA
    Details
    Publication Date: 2024-07-02
    Description: This dataset contains one snow covered digital elevation model (DEM) and one snow depth product from April 10, 2019 over the Trail Valley Creek research watershed, Northwest Territories, Canada (68°44'25 N, 133°29'36 W). The products are derived from airborne laser scanner data that was collected with a Riegl VQ-580 on board the Alfred Wegener Institute's POLAR-6 science aircraft. The snow covered DEM contains the snow covered landscape elevations, i.e. the terrain and the snow. To obtain snow depth, a snow-free digital terrain model (DTM) needs to be subtracted from the snow covered DEM. We also provide a snow depth product, which we obtained by subtracting snow-free DTMs of Trail Valley Creek and the Inuvik to Tuktoyaktuk Highway (ITH) (both from August 2018) from the DEM including snow cover. Please note that the snow depth product covers only parts of the complete snow covered DEM. The data can be used for analysing spatial snow accumulation patterns.
    Keywords: AC; Airborne laser scanning; Aircraft; Arctic; AWI_Perma; Canada; Coordinate reference system; DATE/TIME; digital elevation model (DEM); Location; P6_217_ICEBIRD_2019_1904101502; P6-217_ICEBIRD_2019; PAMARCMIP 2019; Permafrost; Permafrost Research; POLAR 6; Raster graphic, GeoTIFF format; Raster graphic, GeoTIFF format (File Size); snow accumulation; snow depth
    Type: Dataset
    Format: text/tab-separated-values, 6 data points
    Location Call Number Expected Availability
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  • 10
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    Continuous thermosalinograph oceanography along RV HEINCKE cruise track HE598 (2023)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-07-02
    Description: Raw data acquired by a thermosalinograph (SBE21, SeaBird GmbH) on board RV HEINCKE were processed to receive a calibrated and validated data set of seawater temperature and salinity. Data were downloaded from DAVIS SHIP data base (https://dship.awi.de) with a resolution of 1 sec. The SBE21 was equipped with an additional external temperature sensor (SBE38, Sea-Bird GmbH). Raw data are converted to temperature and conductivity values using the calibration coefficients from the calibration before deployment. However, data can only be finally processed after replacement and renewed calibration because correction values for the sensor drift can only be obtained by the post cruise calibration. The thermosalinograph on board RV HEINCKE is exchanged about once a year and calibration procedures are conducted after every exchange. Salinity was calculated according to the instructions from the Practical Salinity Scale PSS-78 using the obtained internal temperature and conductivity data. Processed data are provided as 1min means of salinity and seawater temperature aligned with position data taken from master track of the respective cruise. Quality flags are appended according to the SeaDataNet Data Quality Control Procedures (version from May 2010).
    Keywords: AWI_PhyOce; Calculation according to Practical Salinity Scale PSS-78, Lewis and Perkin (1981); Conductivity; DATE/TIME; DEPTH, water; Digital oceanographic thermometer, Sea-Bird, SBE 38; HE598; HE598_0_Underway-3; Heincke; LATITUDE; LONGITUDE; North Sea; Physical Oceanography @ AWI; Quality flag, salinity; Quality flag, water temperature; Salinity; SCANS; Seadatanet flag: Data quality control procedures according to SeaDataNet (2010); Temperature, water; Temperature, water, internal; thermosalinograph; Thermosalinograph; Thermosalinograph (TSG), Sea-Bird, SBE 21 SEACAT; TSG
    Type: Dataset
    Format: text/tab-separated-values, 186006 data points
    Location Call Number Expected Availability
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