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  • 2020-2024  (4)
  • 2024  (4)
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  • 2020-2024  (4)
Year
  • 1
    facet.materialart.
    Unknown
    Dissolved nutrients data from the PS122 MOSAiC Expedition carried out at the AWI Nutrient Facility (2024)
    PANGAEA
    Details
    Publication Date: 2024-06-26
    Description: Samples for the analysis of dissolved nutrients were collected during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) from the water column, sea ice cores and from special events/locations (e.g., leads, melt ponds, brine, incubation experiments). Samples for dissolved inorganic nutrients (NO3 +NO2 , NO2 , PO4 , Si(OH)4, NH4 ) were analysed onboard during PS122 legs 1 to 3, with duplicate samples collected from CTD casts for later analysis of total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP). From leg 4, all samples collected were stored frozen at -20°C for later analysis. Analyses of stored samples were carried out at the AWI Nutrient Facility between January and March 2021. Nutrient analyses onboard and on land were carried out using a Seal Analytical AA3 continuous flow autoanalyser, controlled by the AACE software version 7.09. Best practice procedures for the measurement of nutrients were adopted following GO-SHIP recommendations (Hydes et al., 2010; Becker et al., 2019). Descriptions of sample collection and handling can be found in the various cruise reports (Haas & Rabe, 2023; Kanzow & Damm, 2023; Rex & Metfies, 2023; Rex & Nicolaus, 2023; Rex & Shupe, 2023). Here we provide data from the water column, obtained from the analysis of discrete samples collected from CTD-Rosette casts from Polarstern (https://sensor.awi.de/?site=search&q=vessel:polarstern:ctd_sbe9plus_321) and Ocean City (https://sensor.awi.de/?site=search&q=vessel:polarstern:ctd_sbe9plus_935). Data from sea ice cores and special events are presented elsewhere. Data from sea ice cores and special events are presented elsewhere. For reference, here we included data from CTD-BTL files associated with nutrient samples. These data are presented by Tippenhauer et al. (2023) Polarstern CTD and Tippenhauer et al. (2023) Ocean City CTD.
    Keywords: Ammonium; Ammonium, standard deviation; Arctic Ocean; Arctic Ocean Nutrient Data; Bottle number; CTD/Rosette; CTD-RO; DATE/TIME; DEPTH, water; ELEVATION; Event label; Gear; LATITUDE; LONGITUDE; MOSAiC; MOSAiC_ECO; MOSAiC20192020; MOSAiC Nutrient Data; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Nitrate and Nitrite; Nitrate and Nitrite, standard deviation; Nitrite; Nitrite, standard deviation; Nitrogen, total dissolved; Nitrogen, total dissolved, standard deviation; Phosphate; Phosphate, standard deviation; Phosphorus, total dissolved; Phosphorus, total dissolved, standard deviation; Polarstern; Pressure, water; PS122/2; PS122/2_23-63; PS122/3; PS122/3_29-8; PS122/3_30-9; PS122/3_35-92; PS122/3_36-115; PS122/3_37-15; PS122/3_39-82; PS122/3_40-36; PS122/3_42-32; PS122/4; PS122/4_44-184; PS122/4_44-67; 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_45-9; PS122/4_45-96; PS122/4_46-2; PS122/4_46-35; PS122/4_46-60; PS122/4_46-83; PS122/4_46-87; PS122/4_46-91; PS122/4_47-108; PS122/4_47-60; PS122/4_48-15; PS122/4_48-155; PS122/4_48-62; PS122/4_48-96; PS122/4_49-14; PS122/4_49-2; PS122/4_49-25; PS122/4_50-21; PS122/5; PS122/5_59-149; PS122/5_59-274; PS122/5_59-306; PS122/5_59-357; PS122/5_59-363; PS122/5_59-62; PS122/5_59-72; PS122/5_60-69; PS122/5_60-89; PS122/5_61-161; PS122/5_61-189; PS122/5_61-211; PS122/5_62-38; PS122/5_62-66; PS122/5_62-91; PS122/5_63-111; PS122/5_63-35; PS122/5_63-53; Quality flag, ammonium; Quality flag, nitrate and nitrite; Quality flag, nitrite; Quality flag, nitrogen, total dissolved; Quality flag, phosphate; Quality flag, phosphorus, total dissolved; Quality flag, salinity; Quality flag, silicon; Quality flag, water temperature; Salinity; Seawater Nutrients; Silicon; Silicon, standard deviation; Temperature, water; Water Column Nutrient Data
    Type: Dataset
    Format: text/tab-separated-values, 31223 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    Annual patterns in algal pigment distribution in Arctic first year ice during the MOSAiC expedition 2019/2020 (2024)
    PANGAEA
    Details
    Publication Date: 2024-07-01
    Description: Algal pigment concentrations were retrieved from samples from first-year (FYI) ice, during the whole MOSAiC expedition (Multidisciplinary drifting Observatory for the Study of Arctic Climate) in 2019 to 2020. During MOSAiC, RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. Sea ice data were collected starting with the onset of the study, at 85 degrees north and 137 degrees east, following the drift towards the Fram Strait, and returning to the North Pole in the last leg of the expedition. Ice cores were collected at the various coring sites together with teams ICE and BGC (Nicolaus et al. 2022), to study the development of pigment patterns over time, on 3 specific ice-locations. Altogether, 292 samples have been collected and analysed. Ice cores were sliced in sections of 5-10 cm before analyses. Each of the sections was melted at room temperature after additions of filtered ambient seawater, under dark conditions. After extraction in 90 % acetone, samples were analysed using high-performance liquid chromatography (HPLC) on a Waters system (AWI). Algal pigments contain a multiple set of information. Firstly, pigment concentrations can show the presence of algal biomass in the various domains sampled. Secondly, marker pigments can reveal seasonal and temporal dynamics in algal community structure, by discerning specific algal classes like diatoms, cryptophytes, haptophytes and chlorophytes that have specific roles in biogeochemical cycles. Thirdly, certain pigments are indicative of the (photo)-physiological state of micro-algae and fourth, degradation products of the main chlorophyll a pigment further give an indication about senescence and grazing in the various habitats.
    Keywords: 19'-Hexanoyloxy-4-ketofucoxanthin; 19-Butanoyloxyfucoxanthin; 19-Hexanoyloxyfucoxanthin; Alloxanthin; alpha-Carotene; Arctic Ocean; Astaxanthin; beta-Carotene; Chlorophyll a, total; Chlorophyll b; Chlorophyll c1+c2; Chlorophyll c3; DATE/TIME; Depth, description; DEPTH, ice/snow; Diadinoxanthin; Diatoxanthin; Dinoxanthin; Echinenone; Event label; Fucoxanthin; Gyroxanthin diester; High Performance Liquid Chromatography (HPLC); IC; Ice corer; LATITUDE; LONGITUDE; Lutein; Lycopene; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Neoxanthin; Peridinin; Pheophorbides; Pheophytin a; Polarstern; Prasinoxanthin; PS122/1; PS122/1_10-16; PS122/1_5-3; PS122/1_6-34; PS122/1_7-6; PS122/1_8-2; PS122/1_9-6; PS122/2; PS122/2_17-3; PS122/2_19-7; PS122/2_21-13; PS122/2_23-3; PS122/2_24-8; PS122/3; PS122/3_35-11; PS122/3_36-21; PS122/3_38-24; PS122/3_39-7; PS122/4; PS122/4_44-134; PS122/4_44-42; PS122/4_46-18; PS122/4_47-16; PS122/4_48-23; PS122/4_49-34; PS122/5; PS122/5_60-3; PS122/5_61-6; Sample code/label; Violaxanthin; Zeaxanthin
    Type: Dataset
    Format: text/tab-separated-values, 8035 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
    facet.materialart.
    Unknown
    Annual patterns in algal pigment distribution in Arctic second year ice during the MOSAiC expedition 2019/2020 (2024)
    PANGAEA
    Details
    Publication Date: 2024-07-01
    Description: Algal pigment concentrations were retrieved from samples from second-year (SYI) ice, during the whole MOSAiC expedition (Multidisciplinary drifting Observatory for the Study of Arctic Climate) in 2019 to 2020. During MOSAiC, RV Polarstern anchored into an ice floe to gain new insights into Arctic climate over a full annual cycle. Sea ice data were collected starting with the onset of the study, at 85 degrees north and 137 degrees east, following the drift towards the Fram Strait, and returning into the marginal ice zone during the 4th leg of the expedition. Ice cores were collected at the various coring sites together with teams ICE and BGC (Nicolaus et al. 2022), to study the development of pigment patterns over time, on 3 specific ice-locations. Altogether, 277 samples have been collected and analysed. Ice cores were sliced in sections of 5-10 cm before analyses. Each of the sections was melted at room temperature after additions of filtered ambient seawater, under dark conditions. After extraction in 90 % acetone, samples were analysed using high-performance liquid chromatography (HPLC) on a Waters system (AWI). Algal pigments contain a multiple set of information. Firstly, pigment concentrations can show the presence of algal biomass in the various domains sampled. Secondly, marker pigments can reveal seasonal and temporal dynamics in algal community structure, by discerning specific algal classes like diatoms, cryptophytes, haptophytes and chlorophytes that have specific roles in biogeochemical cycles. Thirdly, certain pigments are indicative of the (photo)-physiological state of micro-algae and fourth, degradation products of the main chlorophyll a pigment further give an indication about senescence and grazing in the various habitats.
    Keywords: 19'-Hexanoyloxy-4-ketofucoxanthin; 19-Butanoyloxyfucoxanthin; 19-Hexanoyloxyfucoxanthin; Alloxanthin; alpha-Carotene; Arctic Ocean; Astaxanthin; beta-Carotene; Chlorophyll a, total; Chlorophyll b; Chlorophyll c1+c2; Chlorophyll c3; Comment; DATE/TIME; Depth, description; DEPTH, ice/snow; Diadinoxanthin; Diatoxanthin; Dinoxanthin; Echinenone; Event label; Fucoxanthin; Gyroxanthin diester; High Performance Liquid Chromatography (HPLC); IC; Ice corer; LATITUDE; LONGITUDE; Lutein; Lycopene; MOSAiC; MOSAiC20192020; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Neoxanthin; Peridinin; Pheophorbides; Pheophytin a; Polarstern; Prasinoxanthin; PS122/1; PS122/1_10-19; PS122/1_5-78; PS122/1_6-36; PS122/1_7-9; PS122/1_9-11; PS122/2; PS122/2_20-5; PS122/2_22-7; PS122/2_24-34; PS122/2_25-15; PS122/3; PS122/3_33-18; PS122/3_36-4; PS122/3_38-16; PS122/3_39-18; PS122/4; PS122/4_45-29; PS122/4_46-20; PS122/4_47-18; PS122/4_48-25; Sample code/label; Violaxanthin; Zeaxanthin
    Type: Dataset
    Format: text/tab-separated-values, 7811 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 4
    facet.materialart.
    Unknown
    Dissolved nutrients data from the PS122 MOSAiC Expedition carried out onboard Polarstern during Legs 1 to 3 (2024)
    PANGAEA
    Details
    Publication Date: 2024-07-01
    Description: Samples for the analysis of dissolved nutrients were collected during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) from the water column, sea ice cores and from special events/locations (e.g., leads, melt ponds, brine, incubation experiments). Samples for dissolved inorganic nutrients (NO3 +NO2 , NO2 , PO4 , Si(OH)4, NH4 ) were analysed onboard during PS122 legs 1 to 3, with duplicate samples collected from CTD casts for later analysis of total dissolved nitrogen (TDN) and total dissolved phosphorus (TDP). From leg 4, all samples collected were stored frozen at -20°C for later analysis. Analyses of stored samples were carried out at the AWI Nutrient Facility between January and March 2021. Nutrient analyses onboard and on land were carried out using a Seal Analytical AA3 continuous flow autoanalyser, controlled by the AACE software version 7.09. Best practice procedures for the measurement of nutrients were adopted following GO-SHIP recommendations (Hydes et al., 2010; Becker et al., 2019). Descriptions of sample collection and handling can be found in the various cruise reports (Haas & Rabe, 2023; Kanzow & Damm, 2023; Rex & Metfies, 2023; Rex & Nicolaus, 2023; Rex & Shupe, 2023). Here we provide data from the water column, obtained from the analysis of discrete samples collected from CTD-Rosette casts from Polarstern (https://sensor.awi.de/?site=search&q=vessel:polarstern:ctd_sbe9plus_321) and Ocean City (https://sensor.awi.de/?site=search&q=vessel:polarstern:ctd_sbe9plus_935). Data from sea ice cores and special events are presented elsewhere. Data from sea ice cores and special events are presented elsewhere. For reference, here we included data from CTD-BTL files associated with nutrient samples. These data are presented by Tippenhauer et al. (2023) Polarstern CTD and Tippenhauer et al. (2023) Ocean City CTD.
    Keywords: Ammonium; Ammonium, standard deviation; Arctic Ocean; Arctic Ocean Nutrient Data; Bottle number; CTD/Rosette; CTD-RO; DATE/TIME; DEPTH, water; ELEVATION; Event label; Gear; LATITUDE; LONGITUDE; MOSAiC; MOSAiC_ECO; MOSAiC20192020; MOSAiC Nutrient Data; Multidisciplinary drifting Observatory for the Study of Arctic Climate; Nitrate and Nitrite; Nitrate and Nitrite, standard deviation; Nitrite; Nitrite, standard deviation; Phosphate; Phosphate, standard deviation; Polarstern; Pressure, water; PS122/1; PS122/1_10-44; PS122/1_6-58; PS122/1_7-49; PS122/1_8-46; PS122/1_9-50; PS122/2; PS122/2_16-21; PS122/2_16-54; PS122/2_16-94; PS122/2_17-41; PS122/2_17-78; PS122/2_17-8; PS122/2_18-16; PS122/2_18-34; PS122/2_18-5; PS122/2_18-81; PS122/2_19-4; PS122/2_19-56; PS122/2_19-89; PS122/2_20-109; PS122/2_20-17; PS122/2_20-2; PS122/2_20-46; PS122/2_21-1; PS122/2_21-101; PS122/2_21-114; PS122/2_21-128; PS122/2_21-26; PS122/2_21-65; PS122/2_22-18; PS122/2_22-3; PS122/2_22-47; PS122/2_22-71; PS122/2_23-17; PS122/2_23-4; PS122/2_23-63; PS122/2_23-70; PS122/2_23-97; PS122/2_24-47; PS122/2_25-26; PS122/2_25-4; PS122/2_25-54; PS122/3; PS122/3_30-53; PS122/3_31-18; PS122/3_31-39; PS122/3_31-59; PS122/3_31-81; PS122/3_32-75; PS122/3_32-77; PS122/3_33-69; PS122/3_33-80; PS122/3_33-82; PS122/3_34-17; PS122/3_34-67; PS122/3_35-63; PS122/3_35-77; PS122/3_36-19; PS122/3_36-59; PS122/3_36-81; PS122/3_37-116; PS122/3_37-45; PS122/3_37-88; PS122/3_38-100; PS122/3_38-31; PS122/3_38-54; PS122/3_38-69; PS122/3_39-16; PS122/3_39-51; Quality flag, ammonium; Quality flag, nitrate and nitrite; Quality flag, nitrite; Quality flag, phosphate; Quality flag, salinity; Quality flag, silicon; Quality flag, water temperature; Salinity; Seawater Nutrients; Silicon; Silicon, standard deviation; Temperature, water; Water Column Nutrient Data
    Type: Dataset
    Format: text/tab-separated-values, 25249 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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