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  • 1
    Publication Date: 2024-04-18
    Description: This dataset contains measurements of dielectric permittivity and dielectric loss of ice core samples by impedance measurements at 50 MHz on ice stations during the Polarstern cruise PS131 in the marginal ice zone in the Fram Strait between mid-July and 6th of August 2022. Measurements were performed using the Stevens Water Monitoring Systems Hydra Probe Sensor. Ice core samples were obtained with a 9 cm corer. Then a positioning device was used to drill four 3mm holes vertically into the ice core for the device's central waveguide and outer rods. A response was recorded in one-minute intervals for several minutes. The dataset contains both mean and standard deviation of each placement. The dataset also contains temperature, salinity and density measurements (all independent of the device) of the sampled ice cores. For more information of these measurements the user is referred to Chapter 8 of the cruise report. The columns "Site" and "Floe" refer to the nomenclature used in that cruise report with the sites being relative positions on the floes as shown in Figure 3.2.3 therein.
    Keywords: AC3; Arctic; Arctic Amplification; Arctic Ocean; ATWAICE; Comment; DATE/TIME; Density, ice; DEPTH, ice/snow; dielectric permittivity; Event label; Fram Strait; Hydra Probe; ICE; Ice floe description; Ice station; LATITUDE; LONGITUDE; marginal ice zone; Permittivity, relative; Permittivity, relative, standard deviation; Polarstern; PS131; PS131_109-1; PS131_110-1; PS131_47-1; PS131_49-1; PS131_70-1; PS131_89-1; PS131_92-1; PS131_93-1; Sea ice salinity; Site; Surface samples; Temperature, ice/snow
    Type: Dataset
    Format: text/tab-separated-values, 375 data points
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  • 2
    Publication Date: 2024-04-18
    Description: This dataset contains measurements of dielectric permittivity and dielectric loss of the surface layer by impedance measurements at 50 MHz on several ice stations during the Polarstern cruise PS131 in the marginal ice zone in the Fram Strait between mid-July and 6th of August 2022. Measurements were performed using the Stevens Water Monitoring Systems Hydra Probe Sensor. Samples were mainly obtained by vertically inserting the probe tines of the device into the surface scattering layer on top of the sea ice and collecting data in one-minute intervals for several minutes. The cylindrical measurement region of the sensor has a length of 5.7 cm and a diameter of 3 cm, i.e., the upper 5.7 cm of the surface are measured. In the few cases of horizontal placement, the upper 3 cm are thus measured (if not indicated otherwise in the column Comment of the dataset). The dataset contains both mean and standard deviation of each placement. The dataset also contains temperature (measured in the center between surface and visually determined interface of surface layer and ice), salinity (by taking samples of the upper few cm of the surface layer) and density measurements (of the upper 3 cm of the surface layer), all independent of the Hydra Probe device. For more information of these measurements the user is referred to Chapter 8 of the cruise report. The columns "Site" and "Floe" refer to the nomenclature used in that cruise report with the sites being relative positions on the floes as shown in Figure 3.2.3 therein.
    Keywords: AC3; Arctic; Arctic Amplification; Arctic Ocean; ATWAICE; Comment; DATE/TIME; Density, snow; dielectric permittivity; Event label; Fram Strait; Hydra Probe; ICE; Ice floe description; Ice station; LATITUDE; LONGITUDE; marginal ice zone; Permittivity, relative; Permittivity, relative, standard deviation; Polarstern; PS131; PS131_109-1; PS131_110-1; PS131_47-1; PS131_49-1; PS131_68-1; PS131_70-1; PS131_89-1; PS131_92-1; PS131_93-1; Site; Snow salinity; Surface samples; Temperature, ice/snow
    Type: Dataset
    Format: text/tab-separated-values, 727 data points
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  • 3
    Publication Date: 2024-04-18
    Description: Ice core samples were obtained with a 9 cm Kovacs corer during the Polarstern cruise PS131 on ice stations between mid-July and 6th of August 2022 in the marginal ice zone in the Fram Strait and at two ice stations on fast ice (Greenland). This dataset contains temperature profiles obtained by drilling holes in 4 cm intervals (for the upper 40cm) and 10 cm intervals for the rest and inserting a waterproof thermometer with a needle probe. For most of the samples, the whole ice layer was sampled, but for some, only the upper 40 cm were measured. However, the measured total ice thickness is included in the dataset. For more information of these measurements the user is referred to Chapter 8 of the cruise report.
    Keywords: AC3; Arctic; Arctic Amplification; Arctic Ocean; ATWAICE; Comment; DATE/TIME; DEPTH, ice/snow; Event label; Fram Strait; ICE; Ice floe description; Ice station; LATITUDE; LONGITUDE; marginal ice zone; Polarstern; PS131; PS131_109-1; PS131_110-1; PS131_47-1; PS131_48-1; PS131_49-1; PS131_67-1; PS131_68-1; PS131_70-1; PS131_84-1; PS131_89-1; PS131_92-1; PS131_93-1; Sea ice thickness; Site; Temperature, ice/snow; temperature profile
    Type: Dataset
    Format: text/tab-separated-values, 1764 data points
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  • 4
    Publication Date: 2024-04-18
    Description: During the Polarstern cruise PS131 in July and August 2022 in the marginal ice zone in the Fram Strait and at two ice stations on fast ice (Greenland), ice core samples were obtained with a 9 cm Kovacs corer on ice stations. This dataset contains vertical density and salinity profiles obtained by cutting the core in 4 cm intervals (for the upper 40cm) and 10 cm intervals for the remaining part. The samples were weighted on the ice. Together with the known volume densities can be calculated for each sample. They were then taken to the ship for later salinity measurements (Greisinger G1410 salinometer). For most of the samples, the whole ice layer was sampled, but for some, only the upper 40 cm were measured. However, the measured total ice thickness is included in the dataset. For more information of these measurements the user is referred to Chapter 8 of the cruise report.
    Keywords: AC3; Arctic; Arctic Amplification; Arctic Ocean; ATWAICE; Comment; DATE/TIME; Density, ice; density profile; DEPTH, ice/snow; Event label; Fram Strait; ICE; Ice floe description; Ice station; LATITUDE; LONGITUDE; marginal ice zone; Polarstern; PS131; PS131_109-1; PS131_110-1; PS131_47-1; PS131_48-1; PS131_49-1; PS131_67-1; PS131_68-1; PS131_70-1; PS131_84-1; PS131_89-1; PS131_92-1; PS131_93-1; salinity profile; sea ice core; Sea ice salinity; Sea ice thickness; Site
    Type: Dataset
    Format: text/tab-separated-values, 2181 data points
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  • 5
    Publication Date: 2024-05-14
    Description: Measurements of transmitted irradiance under sea ice and corresponding incident solar radiation at the surface have been performed during the Polarstern expedition PS131, ATWAICE. During this expedition, three major ice floes were revisited to repeat measurements with a time gap of approximately one week and thereby analyze temporal development. Additionally, measurements on another ice floe were repeated 8 times within one day to observe the daily cycle of incoming and transmitted irradiance. All observations took place in the Fram Strait, north of Svalbard, between July 13 and August 6, 2022. The radiation measurements have been performed with Ramses spectral radiometers (TriOS, Rastede, Germany) in the wavelength range 316 to 952 nm. The incoming irradiance sensor was installed at approximately 1 m above the sea ice surface. The transmittance sensor was lowered through a hole (diameter about 10 cm) into the water down to 40 to 50 m depth. There are three datasets, two of them contain the raw data of the incoming and transmittance sensors. The third file contains temporally interpolated data (to 1s) of integrated intensity of both sensors and an estimation of the transmittance which is the ratio of the incoming and the transmitted irradiance. All times are given in UTC. The "incoming" dataset contains the date and time as index, the integration time of the sensor in ms and the measured intensity per channel in mW/m²/nm. The "transmitted" dataset contains the same information for the sensor in the water complemented with the sensor depth in meters and its inclination in two directions in degree (°). The "interpolated" dataset contains again the date and time, sensor depth and inclination information, and the integration times of the two sensors complemented with the integrated intensity measured by the two sensors in W/m² and their ratio which is the transmittance in percent (%). Additionally included, are plots of the sensor depth-transmittance relation for all 19 observations and the ice thickness and ice draft measured at the measurement site. Two figures show the measurement setup.
    Keywords: AC3; Arctic; Arctic Amplification; Sea ice; transmittance
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 6
    Publication Date: 2024-05-14
    Keywords: AC3; Arctic; Arctic Amplification; Arctic Ocean; ATWAICE; DATE/TIME; DEPTH, water; Event label; ICE; Ice station; Microstructure Profiler; MSSP; ORDINAL NUMBER; Polarstern; PS131; PS131_109-1; PS131_47-1; PS131_48-1; PS131_49-1; PS131_67-1; PS131_68-1; PS131_69-1; PS131_84-1; PS131_89-1; Sample code/label; Sea ice; Sensor inclination, X; Sensor inclination, Y; Sensor integration time; Short-wave downward (GLOBAL) radiation; Short-wave transmittance; transmittance; Transmittance; UIB_VMP500_SN420
    Type: Dataset
    Format: text/tab-separated-values, 38424 data points
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  • 7
    Publication Date: 2024-05-14
    Keywords: AC3; Arctic; Arctic Amplification; Arctic Ocean; ATWAICE; DATE/TIME; DEPTH, water; Event label; ICE; Ice station; Microstructure Profiler; MSSP; ORDINAL NUMBER; Polarstern; PS131; PS131_109-1; PS131_47-1; PS131_48-1; PS131_49-1; PS131_67-1; PS131_68-1; PS131_69-1; PS131_84-1; PS131_89-1; Sample code/label; Sea ice; Sensor inclination, X; Sensor inclination, Y; Sensor integration time; Short-wave transmittance; Spectral irradiance, downward at 316.92 nm; Spectral irradiance, downward at 320.23 nm; Spectral irradiance, downward at 323.54 nm; Spectral irradiance, downward at 326.84 nm; Spectral irradiance, downward at 330.15 nm; Spectral irradiance, downward at 333.46 nm; Spectral irradiance, downward at 336.77 nm; Spectral irradiance, downward at 340.09 nm; Spectral irradiance, downward at 343.4 nm; Spectral irradiance, downward at 346.71 nm; Spectral irradiance, downward at 350.03 nm; Spectral irradiance, downward at 353.34 nm; Spectral irradiance, downward at 356.66 nm; Spectral irradiance, downward at 359.98 nm; Spectral irradiance, downward at 363.29 nm; Spectral irradiance, downward at 366.61 nm; Spectral irradiance, downward at 369.93 nm; Spectral irradiance, downward at 373.26 nm; Spectral irradiance, downward at 376.58 nm; Spectral irradiance, downward at 379.9 nm; Spectral irradiance, downward at 383.22 nm; Spectral irradiance, downward at 386.55 nm; Spectral irradiance, downward at 389.87 nm; Spectral irradiance, downward at 393.2 nm; Spectral irradiance, downward at 396.53 nm; Spectral irradiance, downward at 399.85 nm; Spectral irradiance, downward at 403.18 nm; Spectral irradiance, downward at 406.51 nm; Spectral irradiance, downward at 409.84 nm; Spectral irradiance, downward at 413.17 nm; Spectral irradiance, downward at 416.5 nm; Spectral irradiance, downward at 419.83 nm; Spectral irradiance, downward at 423.16 nm; Spectral irradiance, downward at 426.5 nm; Spectral irradiance, downward at 429.83 nm; Spectral irradiance, downward at 433.16 nm; Spectral irradiance, downward at 436.5 nm; Spectral irradiance, downward at 439.83 nm; Spectral irradiance, downward at 443.17 nm; Spectral irradiance, downward at 446.51 nm; Spectral irradiance, downward at 449.84 nm; Spectral irradiance, downward at 453.18 nm; Spectral irradiance, downward at 456.52 nm; Spectral irradiance, downward at 459.86 nm; Spectral irradiance, downward at 463.2 nm; Spectral irradiance, downward at 466.53 nm; Spectral irradiance, downward at 469.87 nm; Spectral irradiance, downward at 473.21 nm; Spectral irradiance, downward at 476.56 nm; Spectral irradiance, downward at 479.9 nm; Spectral irradiance, downward at 483.24 nm; Spectral irradiance, downward at 486.58 nm; Spectral irradiance, downward at 489.92 nm; Spectral irradiance, downward at 493.26 nm; Spectral irradiance, downward at 496.61 nm; Spectral irradiance, downward at 499.95 nm; Spectral irradiance, downward at 503.29 nm; Spectral irradiance, downward at 506.64 nm; Spectral irradiance, downward at 509.98 nm; Spectral irradiance, downward at 513.32 nm; Spectral irradiance, downward at 516.67 nm; Spectral irradiance, downward at 520.01 nm; Spectral irradiance, downward at 523.36 nm; Spectral irradiance, downward at 526.7 nm; Spectral irradiance, downward at 530.05 nm; Spectral irradiance, downward at 533.39 nm; Spectral irradiance, downward at 536.74 nm; Spectral irradiance, downward at 540.09 nm; Spectral irradiance, downward at 543.43 nm; Spectral irradiance, downward at 546.78 nm; Spectral irradiance, downward at 550.12 nm; Spectral irradiance, downward at 553.47 nm; Spectral irradiance, downward at 556.82 nm; Spectral irradiance, downward at 560.16 nm; Spectral irradiance, downward at 563.51 nm; Spectral irradiance, downward at 566.86 nm; Spectral irradiance, downward at 570.2 nm; Spectral irradiance, downward at 573.55 nm; Spectral irradiance, downward at 576.9 nm; Spectral irradiance, downward at 580.24 nm; Spectral irradiance, downward at 583.59 nm; Spectral irradiance, downward at 586.93 nm; Spectral irradiance, downward at 590.28 nm; Spectral irradiance, downward at 593.63 nm; Spectral irradiance, downward at 596.97 nm; Spectral irradiance, downward at 600.32 nm; Spectral irradiance, downward at 603.66 nm; Spectral irradiance, downward at 607.01 nm; Spectral irradiance, downward at 610.36 nm; Spectral irradiance, downward at 613.7 nm; Spectral irradiance, downward at 617.05 nm; Spectral irradiance, downward at 620.39 nm; Spectral irradiance, downward at 623.74 nm; Spectral irradiance, downward at 627.08 nm; Spectral irradiance, downward at 630.43 nm; Spectral irradiance, downward at 633.77 nm; Spectral irradiance, downward at 637.11 nm; Spectral irradiance, downward at 640.46 nm; Spectral irradiance, downward at 643.8 nm; Spectral irradiance, downward at 647.14 nm; Spectral irradiance, downward at 650.49 nm; Spectral irradiance, downward at 653.83 nm; Spectral irradiance, downward at 657.17 nm; Spectral irradiance, downward at 660.51 nm; Spectral irradiance, downward at 663.85 nm; Spectral irradiance, downward at 667.19 nm; Spectral irradiance, downward at 670.53 nm; Spectral irradiance, downward at 673.87 nm; Spectral irradiance, downward at 677.21 nm; Spectral irradiance, downward at 680.55 nm; Spectral irradiance, downward at 683.89 nm; Spectral irradiance, downward at 687.23 nm; Spectral irradiance, downward at 690.57 nm; Spectral irradiance, downward at 693.9 nm; Spectral irradiance, downward at 697.24 nm; Spectral irradiance, downward at 700.58 nm; Spectral irradiance, downward at 703.91 nm; Spectral irradiance, downward at 707.25 nm; Spectral irradiance, downward at 710.58 nm; Spectral irradiance, downward at 713.91 nm; Spectral irradiance, downward at 717.25 nm; Spectral irradiance, downward at 720.58 nm; Spectral irradiance, downward at 723.91 nm; Spectral irradiance, downward at 727.24 nm; Spectral irradiance, downward at 730.57 nm; Spectral irradiance, downward at 733.9 nm; Spectral irradiance, downward at 737.23 nm; Spectral irradiance, downward at 740.56 nm; Spectral irradiance, downward at 743.89 nm; Spectral irradiance, downward at 747.22 nm; Spectral irradiance, downward at 750.54 nm; Spectral irradiance, downward at 753.87 nm; Spectral irradiance, downward at 757.19 nm; Spectral irradiance, downward at 760.52 nm; Spectral irradiance, downward at 763.84 nm; Spectral irradiance, downward at 767.16 nm; Spectral irradiance, downward at 770.48 nm; Spectral irradiance, downward at 773.8 nm; Spectral irradiance, downward at 777.12 nm; Spectral irradiance, downward at 780.44 nm; Spectral irradiance, downward at 783.76 nm; Spectral irradiance, downward at 787.08 nm; Spectral irradiance, downward at 790.39 nm; Spectral irradiance, downward at 793.71 nm; Spectral irradiance, downward at 797.02 nm; Spectral irradiance, downward at 800.34 nm; Spectral irradiance, downward at 803.65 nm; Spectral irradiance, downward at 806.96 nm; Spectral irradiance, downward at 810.27 nm; Spectral irradiance, downward at 813.58 nm; Spectral irradiance, downward at 816.89 nm; Spectral irradiance, downward at 820.19 nm; Spectral irradiance, downward at 823.5 nm; Spectral irradiance, downward at 826.8 nm; Spectral irradiance, downward at 830.11 nm; Spectral irradiance, downward at 833.41 nm; Spectral irradiance, downward at 836.71 nm; Spectral irradiance, downward at 840.01 nm; Spectral irradiance, downward at 843.31 nm; Spectral irradiance, downward at 846.61 nm; Spectral irradiance, downward at 849.91 nm; Spectral irradiance, downward at 853.2 nm; Spectral irradiance, downward at 856.5 nm; Spectral irradiance, downward at 859.79 nm; Spectral irradiance, downward at 863.08 nm; Spectral irradiance, downward at 866.38 nm; Spectral irradiance, downward at 869.67 nm; Spectral irradiance, downward at 872.95 nm; Spectral irradiance, downward at 876.24 nm; Spectral irradiance, downward at 879.53 nm; Spectral irradiance, downward at 882.81 nm; Spectral irradiance, downward at 886.09 nm; Spectral irradiance, downward at 889.
    Type: Dataset
    Format: text/tab-separated-values, 1426477 data points
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  • 8
    Publication Date: 2024-05-14
    Keywords: AC3; Arctic; Arctic Amplification; Arctic Ocean; ATWAICE; DATE/TIME; Event label; ICE; Ice station; Microstructure Profiler; MSSP; ORDINAL NUMBER; Polarstern; PS131; PS131_109-1; PS131_47-1; PS131_48-1; PS131_49-1; PS131_67-1; PS131_68-1; PS131_69-1; PS131_84-1; PS131_89-1; Sample code/label; Sea ice; Sensor integration time; Short-wave downward (GLOBAL) radiation; Spectral irradiance, downward at 317.21 nm; Spectral irradiance, downward at 320.55 nm; Spectral irradiance, downward at 323.88 nm; Spectral irradiance, downward at 327.22 nm; Spectral irradiance, downward at 330.56 nm; Spectral irradiance, downward at 333.9 nm; Spectral irradiance, downward at 337.24 nm; Spectral irradiance, downward at 340.58 nm; Spectral irradiance, downward at 343.92 nm; Spectral irradiance, downward at 347.26 nm; Spectral irradiance, downward at 350.6 nm; Spectral irradiance, downward at 353.94 nm; Spectral irradiance, downward at 357.28 nm; Spectral irradiance, downward at 360.62 nm; Spectral irradiance, downward at 363.97 nm; Spectral irradiance, downward at 367.31 nm; Spectral irradiance, downward at 370.65 nm; Spectral irradiance, downward at 373.99 nm; Spectral irradiance, downward at 377.33 nm; Spectral irradiance, downward at 380.68 nm; Spectral irradiance, downward at 384.02 nm; Spectral irradiance, downward at 387.36 nm; Spectral irradiance, downward at 390.71 nm; Spectral irradiance, downward at 394.05 nm; Spectral irradiance, downward at 397.39 nm; Spectral irradiance, downward at 400.73 nm; Spectral irradiance, downward at 404.08 nm; Spectral irradiance, downward at 407.42 nm; Spectral irradiance, downward at 410.77 nm; Spectral irradiance, downward at 414.11 nm; Spectral irradiance, downward at 417.45 nm; Spectral irradiance, downward at 420.8 nm; Spectral irradiance, downward at 424.14 nm; Spectral irradiance, downward at 427.48 nm; Spectral irradiance, downward at 430.83 nm; Spectral irradiance, downward at 434.17 nm; Spectral irradiance, downward at 437.51 nm; Spectral irradiance, downward at 440.86 nm; Spectral irradiance, downward at 444.2 nm; Spectral irradiance, downward at 447.55 nm; Spectral irradiance, downward at 450.89 nm; Spectral irradiance, downward at 454.23 nm; Spectral irradiance, downward at 457.58 nm; Spectral irradiance, downward at 460.92 nm; Spectral irradiance, downward at 464.26 nm; Spectral irradiance, downward at 467.61 nm; Spectral irradiance, downward at 470.95 nm; Spectral irradiance, downward at 474.29 nm; Spectral irradiance, downward at 477.63 nm; Spectral irradiance, downward at 480.98 nm; Spectral irradiance, downward at 484.32 nm; Spectral irradiance, downward at 487.66 nm; Spectral irradiance, downward at 491.0 nm; Spectral irradiance, downward at 494.35 nm; Spectral irradiance, downward at 497.69 nm; Spectral irradiance, downward at 501.03 nm; Spectral irradiance, downward at 504.37 nm; Spectral irradiance, downward at 507.71 nm; Spectral irradiance, downward at 511.05 nm; Spectral irradiance, downward at 514.39 nm; Spectral irradiance, downward at 517.73 nm; Spectral irradiance, downward at 521.07 nm; Spectral irradiance, downward at 524.41 nm; Spectral irradiance, downward at 527.75 nm; Spectral irradiance, downward at 531.09 nm; Spectral irradiance, downward at 534.43 nm; Spectral irradiance, downward at 537.77 nm; Spectral irradiance, downward at 541.1 nm; Spectral irradiance, downward at 544.44 nm; Spectral irradiance, downward at 547.78 nm; Spectral irradiance, downward at 551.12 nm; Spectral irradiance, downward at 554.45 nm; Spectral irradiance, downward at 557.79 nm; Spectral irradiance, downward at 561.12 nm; Spectral irradiance, downward at 564.46 nm; Spectral irradiance, downward at 567.79 nm; Spectral irradiance, downward at 571.13 nm; Spectral irradiance, downward at 574.46 nm; Spectral irradiance, downward at 577.8 nm; Spectral irradiance, downward at 581.13 nm; Spectral irradiance, downward at 584.46 nm; Spectral irradiance, downward at 587.79 nm; Spectral irradiance, downward at 591.13 nm; Spectral irradiance, downward at 594.46 nm; Spectral irradiance, downward at 597.79 nm; Spectral irradiance, downward at 601.12 nm; Spectral irradiance, downward at 604.45 nm; Spectral irradiance, downward at 607.78 nm; Spectral irradiance, downward at 611.1 nm; Spectral irradiance, downward at 614.43 nm; Spectral irradiance, downward at 617.76 nm; Spectral irradiance, downward at 621.09 nm; Spectral irradiance, downward at 624.41 nm; Spectral irradiance, downward at 627.74 nm; Spectral irradiance, downward at 631.06 nm; Spectral irradiance, downward at 634.39 nm; Spectral irradiance, downward at 637.71 nm; Spectral irradiance, downward at 641.03 nm; Spectral irradiance, downward at 644.35 nm; Spectral irradiance, downward at 647.68 nm; Spectral irradiance, downward at 651.0 nm; Spectral irradiance, downward at 654.32 nm; Spectral irradiance, downward at 657.64 nm; Spectral irradiance, downward at 660.95 nm; Spectral irradiance, downward at 664.27 nm; Spectral irradiance, downward at 667.59 nm; Spectral irradiance, downward at 670.9 nm; Spectral irradiance, downward at 674.22 nm; Spectral irradiance, downward at 677.53 nm; Spectral irradiance, downward at 680.85 nm; Spectral irradiance, downward at 684.16 nm; Spectral irradiance, downward at 687.47 nm; Spectral irradiance, downward at 690.79 nm; Spectral irradiance, downward at 694.1 nm; Spectral irradiance, downward at 697.41 nm; Spectral irradiance, downward at 700.72 nm; Spectral irradiance, downward at 704.02 nm; Spectral irradiance, downward at 707.33 nm; Spectral irradiance, downward at 710.64 nm; Spectral irradiance, downward at 713.94 nm; Spectral irradiance, downward at 717.25 nm; Spectral irradiance, downward at 720.55 nm; Spectral irradiance, downward at 723.85 nm; Spectral irradiance, downward at 727.15 nm; Spectral irradiance, downward at 730.46 nm; Spectral irradiance, downward at 733.76 nm; Spectral irradiance, downward at 737.05 nm; Spectral irradiance, downward at 740.35 nm; Spectral irradiance, downward at 743.65 nm; Spectral irradiance, downward at 746.94 nm; Spectral irradiance, downward at 750.24 nm; Spectral irradiance, downward at 753.53 nm; Spectral irradiance, downward at 756.83 nm; Spectral irradiance, downward at 760.12 nm; Spectral irradiance, downward at 763.41 nm; Spectral irradiance, downward at 766.7 nm; Spectral irradiance, downward at 769.99 nm; Spectral irradiance, downward at 773.27 nm; Spectral irradiance, downward at 776.56 nm; Spectral irradiance, downward at 779.85 nm; Spectral irradiance, downward at 783.13 nm; Spectral irradiance, downward at 786.41 nm; Spectral irradiance, downward at 789.69 nm; Spectral irradiance, downward at 792.98 nm; Spectral irradiance, downward at 796.25 nm; Spectral irradiance, downward at 799.53 nm; Spectral irradiance, downward at 802.81 nm; Spectral irradiance, downward at 806.09 nm; Spectral irradiance, downward at 809.36 nm; Spectral irradiance, downward at 812.63 nm; Spectral irradiance, downward at 815.91 nm; Spectral irradiance, downward at 819.18 nm; Spectral irradiance, downward at 822.45 nm; Spectral irradiance, downward at 825.72 nm; Spectral irradiance, downward at 828.98 nm; Spectral irradiance, downward at 832.25 nm; Spectral irradiance, downward at 835.51 nm; Spectral irradiance, downward at 838.78 nm; Spectral irradiance, downward at 842.04 nm; Spectral irradiance, downward at 845.3 nm; Spectral irradiance, downward at 848.56 nm; Spectral irradiance, downward at 851.82 nm; Spectral irradiance, downward at 855.07 nm; Spectral irradiance, downward at 858.33 nm; Spectral irradiance, downward at 861.58 nm; Spectral irradiance, downward at 864.84 nm; Spectral irradiance, downward at 868.09 nm; Spectral irradiance, downward at 871.34 nm; Spectral irradiance, downward at 874.59 nm; Spectral irradiance, downward at 877.83 nm; Spectral irradiance, downward at 881.08 nm; Spectral irradiance, downward at 884.32 nm; Spectral irradiance, downward at 887.56 nm; Spectral irradiance, downward at
    Type: Dataset
    Format: text/tab-separated-values, 3702636 data points
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  • 9
    Publication Date: 2024-05-28
    Description: During the Polarstern cruise PS131 infrared (IR) brightness temperatures of the surface (open ocean and sea ice) were recorded from onboard the vessel with a down-looking infrared camera (Infrared VarioCAM HDx head camera from InfraTec) that was installed on starboard on the upper deck (at around 21.5 m from sea level ('Peildeck')). The viewing angle (off-nadir) was around 70° and the camera has a field of view of 57.1° × 44.4°. Each image has a size of 640 × 480 IR pixels. The images are stored as netCDF files where one file includes data from one day. For each image, latitude and longitude information are included. They are obtained from the mastertrack of the ship (doi:10.1594/PANGAEA.950999). In addition the dataset contains the viewing angle for each image obtained from an auxiliary inertial measurement unit (IMU) installed on the IR camera that was resampled to 2 seconds. Missing data of the IMU was filled by the average of the existing angle measurements of the respective day or, if that was not available, by a fill-value of 70°. The IR camera was operated in conjunction with a visual camera, pointing at the same target. The IR camera data was recording one image every 10 minutes from 3 July - 10 July. From 10 July, 16:00 UTC, the cameras was operated with a sampling rate of 0.2 Hz, taking a picture every 5 s. Data is missing on 24 July from 7:09-19:22 and on 7 August from 17:16-21:20 when the recording was stopped. The images contain open ocean as well as sea ice in the eastern Fram Strait, the marginal ice zone in Fram Strait, during the transit to the Aurora vent field (high ice concentration) and near East Greenland (fast ice).
    Keywords: AC3; Arctic; Arctic Amplification; ATWAICE; Binary Object; Binary Object (File Size); Binary Object (MD5 Hash); Binary Object (Media Type); brightness temperature; CT; Infrared head camera, InfraTec, VarioCAM HDx; infrared imagery; marginal ice zone; ocean temperature; Polarstern; PS131; PS131-track; Sea ice; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 35 data points
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