PANGAEA_993651 Sea ice density and salinity profiles measured during RV POLARSTERN cruise PS144 Rückert, Janna Elisabeth; Bahlmann, Jonathan; Bühler, Linnu; Kaphegyi, Kari; Kolar, Jonathan; Neckel, Niklas; Risse, Nils; Trace-Kleeberg, Sunke Sea ice density and salinity profiles measured during RV POLARSTERN cruise PS144 2026-04-17 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.993651 Investigator Janna Elisabeth Rückert janna.rueckert@uni-bremen.de Earth Science Station label Event label Core DATE/TIME LATITUDE LONGITUDE Sea ice thickness DEPTH, ice/snow Depth, ice/snow, top/minimum Depth, ice/snow, bottom/maximum Sea ice salinity Sea ice conductivity Density, ice Freeboard Snow depth Comment Observer geoscientificInformation Arctic Core Freeboard ice density ice salinity PS144 PS144_007_ps144_physics_coring PS144_023_ps144_physics_coring PS144_042_ps144_physics_coring PS144_050_ps144_physics_coring PS144_067_ps144_physics_coring PS144_080_ps144_physics_coring PS144_085_ps144_physics_coring PS144_109_ps144_physics_coring PS144_123_ps144_physics_coring PS144_134_ps144_physics_coring sea ice core Calculated Salinometer, Greisinger, G1410 [handheld] Polarstern 2024-08-16 2024-09-26 Complete 84.421333 89.9589 42.983087 179.507778 0.015 m (DEPTH, ice/snow) 3.285 m (DEPTH, ice/snow) AC3 Arctic Amplification unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 2219 data points text/tab-separated-values Bühler, Linnu; Rückert, Janna Elisabeth; Walbröl, Andreas; Mech, Mario; Risse, Nils; Krobot, Pavel; Ebell, Kerstin; Schnitt, Sabrina; Spreen, Gunnar (2026): Water vapor, mixed-phase clouds, precipitation and sea ice emissivity over the Central Arctic Ocean (VAMPIRE-1): remote sensing and in-situ measurements suite during POLARSTERN cruise PS144 (ArcWatch-2) [dataset bibliography]. PANGAEA, https://doi.org/10.1594/PANGAEA.990496 Rabe, Benjamin; Geibert, Walter (2025): The Expedition PS144 of the Research Vessel POLARSTERN to the Arctic Ocean in 2023 /2024. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 794, 312 pp, https://doi.org/10.57738/BZPM_0794_2025 Rückert, Janna Elisabeth; Bahlmann, Jonathan; Bühler, Linnu; Kolar, Jonathan; Neckel, Niklas; Risse, Nils; Trace-Kleeberg, Sunke (2026): Sea ice temperature profiles measured during RV POLARSTERN cruise PS144 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993627

During the Polarstern cruise PS144 from August 2024 to October 2024 in the central Arctic Ocean ice core samples were obtained with a 9 cm Kovacs corer during 10 ice stations. In total, there are 12 cores (at two stations the ice was sampled twice), all of them taken within the vicinity of the footprint of the onboard microwave radiometers installed for the VAMPIRE project (https://doi.org/10.1594/PANGAEA.990496), that is, in about 25 m distance to the port bow of Polarstern). This dataset contains vertical density and salinity profiles obtained by cutting the core in 5 cm intervals (for the upper 20 cm) and 10 cm intervals for the remaining part. The samples were weighed on the ice. Together with the known volume, densities are calculated for each sample. The samples were taken to the ship, melted and their salinity was measured using a Greisinger G1410 salinometer (measuring salinity and conductivity). The measured total ice ("EsEs") and snow thickness as well as the ice freeboard (distance from sea level to ice surface, the total freeboard is derived by adding the snow thickness) are included in the dataset. Note that the location (latitude and longitude in the dataset) was usually measured at the start of all measurements performed by the group, while the actual coring occurred up to a few hours later and does not account for sea ice drift. The ice cores are identifiable by the column "unique core number", which is the same as used in the temperature profile dataset (doi:10.1594/PANGAEA.993627). For more information about these measurements the user is referred to Chapter 6.4 of the cruise report (https://doi.org/10.57738/BZPM_0794_2025). ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.993651"!

http://commons.wikimedia.org/w/index.php?title=Image:Ice-floe_params_hg.png Freeboard http://commons.wikimedia.org/wiki/File:Ice-floe_params_hg.png Sea ice thickness http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME https://doi.org/10.17815/jlsrf-3-163 Polarstern https://doi.org/10.57738/BZPM_0794_2025 The Expedition PS144 of the Research Vessel POLARSTERN to the Arctic Ocean in 2023 /2024 https://doi.pangaea.de/10.1594/PANGAEA.990496 Water vapor, mixed-phase clouds, precipitation and sea ice emissivity over the Central Arctic Ocean (VAMPIRE-1): remote sensing and in-situ measurements suite during POLARSTERN cruise PS144 (ArcWatch-2) https://doi.pangaea.de/10.1594/PANGAEA.993627 Sea ice temperature profiles measured during RV POLARSTERN cruise PS144 https://gepris.dfg.de/gepris/projekt/268020496 AC3 DIF 9.4 2026-04-17 2026-04-29