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  • PANGAEA  (24)
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Keywords
Years
  • 1
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Gonçalves-Araujo, Rafael; Stedmon, Colin A; Heim, Birgit; Dubinenkov, Ivan; Kraberg, Alexandra Claudia; Moiseev, Denis; Bracher, Astrid (2015): From fresh to marine waters: characterization and fate of dissolved organic matter in the Lena River delta region, Siberia. Frontiers in Marine Science, 2(108), 13 pp, https://doi.org/10.3389/fmars.2015.00108
    Publication Date: 2023-04-12
    Description: Connectivity between the terrestrial and marine environment in the Artic is changing as a result of climate change, influencing both freshwater budgets and the supply of carbon to the sea. This study characterizes the optical properties of dissolved organic matter (DOM) within the Lena Delta region and evaluates the behavior of DOM across the fresh water-marine gradient. Six fluorescent components (four humic-like; one marine humic-like; one protein-like) were identified by Parallel Factor Analysis (PARAFAC) with a clear dominance of allochthonous humic-like signals. Colored DOM (CDOM) and dissolved organic carbon (DOC) were highly correlated and had their distribution coupled with hydrographical conditions. Higher DOM concentration and degree of humification were associated with the low salinity waters of the Lena River. Values decreased towards the higher salinity Laptev Sea shelf waters. Results demonstrate different responses of DOM mixing in relation to the vertical structure of the water column, as reflecting the hydrographical dynamics in the region. Two mixing curves for DOM were apparent. In surface waters above the pycnocline there was a sharper decrease in DOM concentration in relation to salinity indicating removal. In the bottom water layer the DOM decrease within salinity was less. We propose there is a removal of DOM occurring primarily at the surface layer, which is likely driven by photodegradation and flocculation.
    Keywords: Absorption coefficient, 350 nm; Absorption coefficient, 443 nm; AWI Arctic Land Expedition; Biological index; Date/Time of event; DEPTH, water; Elevation of event; Event label; Fluorescence index; Fluorescence intensity, maximum, DOM; Humification index; Laptev Sea; Latitude of event; Lena2013; Longitude of event; MULT; Multiple investigations; Ratio; RU-Land_2013_Lena; Salinity; Specific ultraviolet absorbance normalized to DOC; Spectral slope of colored dissolved organic matter absorption; T1-1301; T1-1302; T1-1303; T1-1304; T1-1305; T1-1306; T1-1307; T1-3X-1; T4-1301; T4-1303; T4-1304; T4-1305; T5-1301; T5-1303; T5-1304; T6-1301; T6-1302; T6-1303; Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 1851 data points
    Location Call Number Limitation Availability
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  • 2
    Publication Date: 2023-05-12
    Keywords: Area/locality; Chlorophyll a; Chlorophyll a, standard deviation; CTD, Seacat; CTD-S; Dana10_FB2_1; Dana10_FB3.5_1; Dana10_GF1_1; Dana10_GF10_1; Dana10_GF10bis; Dana10_GF11_1; Dana10_GF2_1; Dana10_GF3_1; Dana10_GF6_1; Dana10_K2_1; Dana10_K4_1; Dana10/1; Dana II; Date/Time of event; DEPTH, water; Event label; Fyllas Banke, West Greenland; Godthåbsfjord, West Greenland; Kapisigdlit, West Greenland; Latitude of event; Longitude of event; Sampling date; Station label; Temperature, technical
    Type: Dataset
    Format: text/tab-separated-values, 77 data points
    Location Call Number Limitation Availability
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  • 3
    Publication Date: 2023-06-08
    Description: In this study organic mater fluorescence is characterized by excitation-emission matrix spectroscopy on alkaline extracted DOM from a Baltic Sea sediment core that spanned 8500 years and fluctuating levels of hypoxia. Our results showed that three underlying components had strong correlations with carbon, nitrogen content and δ15N. Our results demonstrate that optical properties of extracted OM from sediments reveal information about OM quality and quantity similar to those of biomarkers, which can be a useful additional tool for investigating OM deposition.
    Keywords: AGE; ARA-LL19; Aranda (1989); Baltic Sea; Carbon, total; COMBINE-2/HYPER; Cyanobacteria, fractional contribution; DEPTH, sediment/rock; Fluorescence, dissolved organic matter, component; Fluorescence, dissolved organic matter, component, C normalized; Molybdenum/Aluminium ratio; MUC; MultiCorer; Nitrogen, total; Phytoplankton, fractional contribution; Sample mass; Terrestrial matter, fractional contribution; δ13C; δ15N
    Type: Dataset
    Format: text/tab-separated-values, 1955 data points
    Location Call Number Limitation Availability
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  • 4
    Publication Date: 2023-07-10
    Keywords: Amphidinium sphenoides, biomass as carbon; Amphidinium sphenoides, standard deviation; Chaetoceros spp., biomass as carbon; Chaetoceros spp., standard deviation; Ciliates, biomass as carbon; Ciliates, standard deviation; CTD, Seacat; CTD-S; Dana10_GF10bis; Dana10_GF11_1; Dana10_K2_1; Dana10_K4_1; Dana10/1; Dana II; Date/Time of event; DEPTH, water; Diatoms, centrales, biomass as carbon; Diatoms, pennales, biomass as carbon; Diatoms, standard deviation; Dinobryon spp., biomass as carbon; Dinobryon spp., standard deviation; Dinoflagellates, biomass as carbon; Dinoflagellates, standard deviation; Dinophysis spp., biomass as carbon; Dinophysis spp., standard deviation; Event label; Godthåbsfjord, West Greenland; Gyrodinium spp., biomass as carbon; Gyrodinium spp., standard deviation; Kapisigdlit, West Greenland; Katodinium glaucum, biomass as carbon; Katodinium glaucum, standard deviation; Laboea strobila, biomass as carbon; Laboea strobila, standard deviation; Latitude of event; Longitude of event; Nanoflagellates, biomass as carbon; Nanoflagellates, standard deviation; Phaeocystis sp., biomass as carbon; Phaeocystis sp., standard deviation; Protoperidinium spp., biomass as carbon; Protoperidinium spp., standard deviation; Pseudo-nitzschia spp., biomass as carbon; Pseudo-nitzschia spp., standard deviation; Strombidium spp., biomass as carbon; Strombidium spp., standard deviation; Thalassiosira spp., biomass as carbon; Thalassiosira spp., standard deviation; Tintinnid, biomass as carbon; Tintinnid, standard deviation; Torodinium robustum, biomass as carbon; Torodinium robustum, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 168 data points
    Location Call Number Limitation Availability
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  • 5
    Publication Date: 2023-07-11
    Keywords: CTD, Seacat; CTD-S; Dana10_FB2_1; Dana10_FB3.5_1; Dana10_GF1_1; Dana10_GF10_1; Dana10_GF10bis; Dana10_GF11_1; Dana10_GF2_1; Dana10_GF3_1; Dana10_GF6_1; Dana10_K2_1; Dana10_K4_1; Dana10/1; Dana II; Event label; Feeding experiment; FX; Fyllas Banke, West Greenland; Godthåbsfjord, West Greenland; Kapisigdlit, West Greenland; Method comment; Mortality; Number; Phytoplankton growth rate; Primary production of chlorophyll a per day; Primary production removed/grazed; Size fraction; Station label
    Type: Dataset
    Format: text/tab-separated-values, 138 data points
    Location Call Number Limitation Availability
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  • 6
    Publication Date: 2023-07-11
    Keywords: CTD, Seacat; CTD-S; Dana10_GF11_1; Dana10_GF6_1; Dana10_K2_1; Dana10/1; Dana II; Event label; Feeding experiment; FX; Godthåbsfjord, West Greenland; Kapisigdlit, West Greenland; Mortality; Number; Phytoplankton growth rate; Size fraction; Station label
    Type: Dataset
    Format: text/tab-separated-values, 14 data points
    Location Call Number Limitation Availability
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  • 7
    Publication Date: 2023-11-27
    Description: Here we present a merged and calibrated dataset of temperature, practical salinity and dissolved organic matter (DOM) fluorescence obtained from several Ice Tethered Profilers (ITPs) deployed across the central Arctic (2011-2016). The data offer a unique spatial coverage of the distribution of DOM in the surface 800 m below Arctic sea ice. A total of 5044 profiles are gathered. The ITP data are level 3 data products pressure-bin-averaged at 1-db vertical resolution with depth down to either 200 or approximately 750 m. Data (max 800m depth) from CTD casts made during two oceanographic cruises are also included. These were used as part of the calibration and validation of the ITP calibration routines. The cruises were PS94 (ARK-XXIX/3) with POLARSTERN in 2015 and NAACOS with DANA in 2012. The presented DOM fluorescence data are smoothed, corrected for instrument drift and calibrated to provide intercomparable data across the sensors. Fluorescence is reported in Raman Units (nm-1), and comparable to laboratory measurements conducted according to current community recommendations.
    Keywords: Advective Pathways of nutrients and key Ecological substances in the ARctic; APEAR; Arctic; CDOM; FRAM; FRontiers in Arctic marine Monitoring; hydrography; ITP; particulate matter; RACE; Regional Atlantic Circulation and global Change; water masses
    Type: Dataset
    Format: application/zip, 9 datasets
    Location Call Number Limitation Availability
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  • 8
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    Unknown
    PANGAEA
    In:  Supplement to: Calbet, Albert; Riisgaard, Karen; Saiz, Enric; Zamora, Sara; Stedmon, Colin A; Nielsen, Torkel Gissel (2011): Phytoplankton growth and microzooplankton grazing along a sub-Arctic fjord (Godthabsfjord, west Greenland). Marine Ecology Progress Series, 442, 11-22, https://doi.org/10.3354/meps09343
    Publication Date: 2023-12-13
    Description: We evaluated the role of microzooplankton (sensu latto, grazers 〈500 µm) in determining the fate of phytoplankton production (PP) along a glacier-to-open sea transect in the Greenland subarctic fjord, Godthabfjord. Based on the distribution of size fractionated chlorophyll a (chl a) concentrations we established 4 zones: (1) Fyllas Bank, characterized by deep chl a maxima (ca. 30 to 40 m) consisting of large cells, (2) the mouth and main branch of the fjord, where phytoplankton was relatively homogeneously distributed in the upper 30 m layer, (3) inner waters influenced by glacial melt water and upwelling, with high chl a concentrations (up to 12 µg/l) in the 〉10 µm fraction within a narrow (2 m) subsurface layer, and (4) the Kapisigdlit branch of the fjord, ice-free, and characterized with a thick and deep chl a maximum layer. Overall, microzooplankton grazing impact on primary production was variable and seldom significant in the Fyllas Bank and mouth of the fjord, quite intensive (up to 〉100% potential PP consumed daily) in the middle part of the main and Kapisigdlit branches of the fjord, and rather low and unable to control the fast growing phytoplankton population inhabiting the nutrient rich waters in the upwelling area in the vicinity of the glacier. Most of the grazing impact was on the 〈10 µm phytoplankton fraction, and the major grazers of the system seem to be 〉20 µm microzooplankton, as deducted from additional dilution experiments removing this size fraction. Overall, little or no export of phytoplankton out of the fjord to the Fyllas Bank can be determined from our data.
    Keywords: International Polar Year (2007-2008); IPY
    Type: Dataset
    Format: application/zip, 4 datasets
    Location Call Number Limitation Availability
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  • 9
    Publication Date: 2024-03-01
    Description: Discrete bottle values of Temperature, Salinity, Dissolved Oxygen, Chlorophyll A fluorescence and Coloured Dissolved Organic Matter (CDOM) collected in the Arctic Ocean, over the western Eurasian Basin and Lomonosov Ridge, between 2 August and 11 September 2021, from I/B Oden. This is the Swedish contribution to the international Synoptic Arctic Survey. This dataset merges the bottle data from the full-depth physical CTD and the shallow biological CTD. Both systems had the standard SeaBird SBE911 plus system with dual sensors to measure in-situ temperature and conductivity and single sensors measuring pressure and oxygen. The physical CTD also had a CDOM sensor (Turner Cyclops fluorometer), while the Chl-A fluorometer (WET Labs, ECO-AFL/FL) was moved throughout the expedition between the two systems. Salinity, Oxygen, Chl-A fluorescence and CDOM were calibrated against sample data collected and analysed by the co-authors: - Salinity samples from the deep stations were analysed post-cruise using a salinometer (Guildline Autosal) and IAPSO standard seawater at the GEOMAR, Germany. - Dissolved oxygen was determined onboard using an automatic Winkler titration setup with UV detection (Scripps Institute of Oceanography Oxygen Titration System version 2.35m). - Chl-A concentration was determined post-cruise from flow cytometry (FCM) at Linnaeus University, Sweden. The samples consisted of 4 mL cryovials, of which 3.8 mL was sample water and 76 μL 25% EM grade glutaraldehyde solution (Glu stock). The samples incubated at room temperature for 5 minutes before flash freezing in liquid nitrogen and then placing in the -80 °C freezer in cryoboxes. - CDOM was determined post-cruise at the National Institute of Aquatic Resources - DTU Aqua, Denmark, following the method of Lawaetz and Stedmon (2009) This dataset contains the bottle data of the casts where bottles were fired. For more information about each sensor and their calibration, the reader is invited to check the cruise report (final version submitted on 20 September; shareable version with DOI coming soon)
    Keywords: Arctic; Arctic Ocean; Arctic Research Icebreaker Consortium: A strategy for meeting the needs for marine-based research in the Arctic; ARICE; Bottle data; Bottle number; CDOM; Chl-a; CTD, Sea-Bird, SBE 911plus; CTD/Rosette; DATE/TIME; Density, mass density; DEPTH, water; Der arktische Ozean 2020 – Ventilationszeitskalen, anthropogener Kohlenstoff und Variabilität in einer sich verändernden Umgebung; DFG_456675218; Event label; Fluorescence, chlorophyll; Fluorescence, colored dissolved organic matter; ITS-90, temperature scale; LATITUDE; LONGITUDE; New insights on ocean circulation and the fate of organic carbon in the Arctic Ocean; NOC; oceanography; Oden; Oxygen; Oxygen, dissolved; Practical Salinity Scale – 1978 (PSU78); Pressure, water; PSU78; Quality flag, absolute salinity; Quality flag, conservative water temperature; Quality flag, density; Quality flag, fluorescence, chlorophyll; Quality flag, fluorescence, colored dissolved organic matter; Quality flag, oxygen; Quality flag, potential water temperature; Quality flag, salinity; Quality flag, water temperature; Salinity; Salinity, absolute; Salinity; Temperature; SAS-Oden_2021; Seadatanet flag: Data quality control procedures according to SeaDataNet (2010); SO21; SO21_01-01; SO21_03-01; SO21_03-02; SO21_05-01; SO21_05-02; SO21_05-03; SO21_07-01; SO21_07-03; SO21_07-04; SO21_07-05; SO21_08-01; SO21_08-02; SO21_08-03; SO21_08-04; SO21_08-06; SO21_08-09; SO21_11-01; SO21_13-01; SO21_13-03; SO21_13-04; SO21_13-05; SO21_16-01; SO21_16-03; SO21_16-04; SO21_16-05; SO21_16-06; SO21_18-01; SO21_18-03; SO21_18-04; SO21_18-05; SO21_20-01; SO21_20-02; SO21_20-03; SO21_22-08; SO21_22-09; SO21_22-10; SO21_22-11; SO21_24-01; SO21_24-02; SO21_24-03; SO21_25-01; SO21_25-02; SO21_26-01; SO21_26-02; SO21_26-03; SO21_26-05; SO21_26-11; SO21_28-01; SO21_28-02; SO21_28-03; SO21_30-01; SO21_30-02; SO21_30-03; SO21_30-11; SO21_30-13; SO21_32-02; SO21_33-01; SO21_33-02; SO21_33-03; SO21_33-05; SO21_35-11; SO21_35-12; SO21_35-13; SO21_35-15; SO21_37-01; SO21_38-08; SO21_38-13; SO21_38-14; SO21_38-15; SO21_38-17; SO21_40-01; SO21_41-01; SO21_42-01; SO21_42-02; SO21_42-06; SO21_42-08; SO21_44-01; SO21_45-01; SO21_46-01; SO21_46-02; SO21_47-01; SO21_48-01; SO21_48-02; SO21_48-04; SO21_50-06; SO21_50-11; SO21_50-13; SO21_50-16; SO21_52-01; SO21_53-07; SO21_53-08; SO21_53-09; SO21_53-14; SO21_53-15; SO21_56-01; SO21_56-03; SO21_56-05; SO21_56-06; SO21_56-07; SO21_56-08; SO21_58-09; SO21_58-12; SO21_58-15; SO21_58-17; SO21_58-18; Synoptic Arctic Survey; Temperature, water; Temperature, water, conservative; Temperature, water, potential; TEOS-10; Thermodynamic Equation Of Seawater - 2010 (TEOS-10); WAOW; Why is the deep Arctic Ocean Warming?
    Type: Dataset
    Format: text/tab-separated-values, 49362 data points
    Location Call Number Limitation Availability
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  • 10
    Publication Date: 2024-03-22
    Description: The data set comprised the dissolved organic carbon (DOC), total dissolved nitrogen (TDN), DOC/TDN and the specific ultraviolet absorbance (SUVA254) for MOSAiC expedition, and the CDOM parameters (spectral slope S275 295, the absorption coefficient aCDOM(350) and the biological index (BIX), the fluorescence index (FI) and humification index (HIX) ), together with five parallel factor analysis (PARAFAC) components for the MOSAiC, N ICE2015 and TA19_4 expeditions. Additionally, the salinity for Lead water samples was also included in this dataset.
    Keywords: Absorption coefficient, colored dissolved organic matter at 350 nm; Arctic Ocean; Bering Strait; Biological index; Carbon, organic, dissolved; Carbon, organic, dissolved/Nitrogen, total, dissolved ratio; CDOM; Comment; Cruise/expedition; CTD; CTD/Rosette; CTD-RO; DATE/TIME; DEPTH, water; DOC; East Siberian Sea; EEMs; Event label; Fluorescence index; Hand pump; HP; Humification index; Intensity; Lance; Laptev Sea; LATITUDE; LONGITUDE; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; N-ICE2015; N-ICE2015_On-ice_CTD-001; N-ICE2015_On-ice_CTD-002; N-ICE2015_On-ice_CTD-004; N-ICE2015_On-ice_CTD-005; N-ICE2015_On-ice_CTD-006; N-ICE2015_On-ice_CTD-007; N-ICE2015_On-ice_CTD-009; N-ICE2015_On-ice_CTD-010; N-ICE2015_On-ice_CTD-011; N-ICE2015_On-ice_CTD-012; N-ICE2015_On-ice_CTD-014; N-ICE2015_On-ice_CTD-015; N-ICE2015_On-ice_CTD-020; N-ICE2015_On-ice_CTD-021; N-ICE2015_On-ice_CTD-022; N-ICE2015_On-ice_CTD-023; N-ICE2015_On-ice_CTD-028; N-ICE2015_On-ice_CTD-029; N-ICE2015_On-ice_CTD-031; N-ICE2015_On-ice_CTD-032; N-ICE2015_On-ice_CTD-036; N-ICE2015_On-ice_CTD-041; N-ICE2015_On-ice_CTD-047; N-ICE2015_On-ice_CTD-048; N-ICE2015_On-ice_CTD-052; N-ICE2015_On-ice_CTD-053; N-ICE2015_On-ice_CTD-055; N-ICE2015_On-ice_CTD-057; N-ICE2015_On-ice_CTD-059; N-ICE2015_On-ice_CTD-062; N-ICE2015_On-ice_CTD-065; N-ICE2015_On-ice_CTD-066; N-ICE2015_On-ice_CTD-067; N-ICE2015_On-ice_CTD-068; N-ICE2015_On-ice_CTD-070; N-ICE2015_On-ice_CTD-072; N-ICE2015_On-ice_CTD-073; N-ICE2015_On-ice_CTD-074; N-ICE2015_On-ice_CTD-075; N-ICE2015_On-ice_CTD-077; N-ICE2015_On-ice_CTD-078; N-ICE2015_On-ice_CTD-082; N-ICE2015_On-ice_CTD-083; N-ICE2015_On-ice_CTD-084; N-ICE2015_On-ice_CTD-085; N-ICE2015_On-ice_CTD-089; N-ICE2015_On-ice_CTD-091; N-ICE2015_On-ice_CTD-092; N-ICE2015_Ship_CTD-002; N-ICE2015_Ship_CTD-006; N-ICE2015_Ship_CTD-009; N-ICE2015_Ship_CTD-010; N-ICE2015_Ship_CTD-022; N-ICE2015_Ship_CTD-026; N-ICE2015_Ship_CTD-029; N-ICE2015_Ship_CTD-032; N-ICE2015_Ship_CTD-036; N-ICE2015_Ship_CTD-039; N-ICE2015_Ship_CTD-042; N-ICE2015_Ship_CTD-044; N-ICE2015_Ship_CTD-045; N-ICE2015_Ship_CTD-046; N-ICE2015_Ship_CTD-047; N-ICE2015_Ship_CTD-048; N-ICE2015_Ship_CTD-049; N-ICE2015_Ship_CTD-050; N-ICE2015_Ship_CTD-051; Nitrogen, total dissolved; Norwegian Young sea ICE cruise; Ocean and sea region; Optical spectroscopy; PARAFAC; PM19_113; PM19_117; PM19_119; PM19_120; PM19_122; PM19_124; PM19_129; PM19_133; PM19_135; PM19_137; PM19_139; PM19_140; PM19_160; PM19_161; PM19_162; PM19_163; PM19_164; PM19_165; PM19_166; PM19_167; PM19_168; PM19_169; PM19_170; PM19_171; PM19_172; PM19_173; PM19_174; PM19_175; PM19_176; PM19_177; PM19_178; PM19_179; PM19_180; PM19_181; PM19_184; PM19_193; PM19_194; PM19_195; PM19_196; PM19_197; PM19_198; PM19_199; Polarstern; Professor Multanovskiy; PS122/1; PS122/1_10-44; PS122/1_7-49; PS122/1_9-50; PS122/2; PS122/2_17-41; PS122/2_18-34; PS122/2_19-55; PS122/2_19-56; PS122/2_20-45; PS122/2_20-46; PS122/2_21-64; PS122/2_21-65; PS122/2_22-47; PS122/2_23-63; PS122/2_25-54; PS122/3; PS122/3_30-41; PS122/3_30-53; PS122/3_33-70; PS122/3_33-71; PS122/3_36-81; PS122/3_36-83; PS122/3_36-84; PS122/3_37-45; PS122/3_37-46; PS122/3_37-47; PS122/3_38-54; PS122/3_39-51; PS122/3_39-52; PS122/3_39-53; PS122/3_40-36; PS122/4; PS122/4_44-184; PS122/4_45-100; PS122/4_45-3; PS122/4_45-31; PS122/4_45-75; PS122/4_45-79; PS122/4_45-82; PS122/4_45-85; PS122/4_45-96; PS122/4_46-60; PS122/4_47-60; PS122/4_48-62; PS122/4_49-14; PS122/4_49-25; PS122/5; PS122/5_59-291; PS122/5_59-306; PS122/5_59-391; PS122/5_59-393; PS122/5_59-62; PS122/5_59-72; PS122/5_60-131; PS122/5_60-22; PS122/5_60-223; PS122/5_60-69; PS122/5_61-161; PS122/5_62-91; Salinity; see abstract; Specific ultraviolet absorbance normalized to DOC, 254 nm, per mass carbon; Spectral slope of colored dissolved organic matter absorption, 275-295 nm; Transarktika-2019_Leg4; Transpolar Drift
    Type: Dataset
    Format: text/tab-separated-values, 13360 data points
    Location Call Number Limitation Availability
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