<?xml version="1.0" encoding="UTF-8"?><!--*** Generated from internal PANGAEA metadata schema by dif.xslt ***--><DIF xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.4.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/">
<Entry_ID>PANGAEA_993445</Entry_ID>
<Entry_Title>Snow and surface scattering layer height measurements during RV POLARSTERN cruise PS144</Entry_Title>
<Data_Set_Citation>
<Dataset_Creator>Rückert, Janna Elisabeth; Bahlmann, Jonathan; Bühler, Linnu; Kolar, Jonathan; Neckel, Niklas; Risse, Nils; Trace-Kleeberg, Sunke</Dataset_Creator>
<Dataset_Title>Snow and surface scattering layer height measurements during RV POLARSTERN cruise PS144</Dataset_Title>
<Dataset_Release_Date>2026-04-13</Dataset_Release_Date>
<Dataset_Publisher>PANGAEA</Dataset_Publisher>
<Data_Presentation_Form>Dataset</Data_Presentation_Form>
<Online_Resource>https://doi.pangaea.de/10.1594/PANGAEA.993445</Online_Resource>
</Data_Set_Citation>
<Personnel>
<Role>Investigator</Role>
<First_Name>Janna Elisabeth</First_Name>
<Last_Name>Rückert</Last_Name>
<Email>janna.rueckert@uni-bremen.de</Email>
</Personnel>
<Discipline>
<Discipline_Name>Earth Science</Discipline_Name>
</Discipline>
<Parameters>
<Detailed_Variable>Event label</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Sample code/label</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>DATE/TIME</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>LATITUDE</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>LONGITUDE</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Location</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Snow depth</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Surface scattering layer, height</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Observer</Detailed_Variable>
</Parameters>
<ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
<Keyword>Arctic</Keyword>
<Keyword>Ice station</Keyword>
<Keyword>PS144</Keyword>
<Keyword>PS144_109-1</Keyword>
<Keyword>PS144_123-2</Keyword>
<Keyword>PS144_134-1</Keyword>
<Keyword>PS144_23-1</Keyword>
<Keyword>PS144_42-1</Keyword>
<Keyword>PS144_50-1</Keyword>
<Keyword>PS144_67-1</Keyword>
<Keyword>PS144_7-1</Keyword>
<Keyword>PS144_80-1</Keyword>
<Keyword>PS144_85-1</Keyword>
<Keyword>Sea ice</Keyword>
<Keyword>snow</Keyword>
<Keyword>snow depth</Keyword>
<Sensor_Name>
<Long_Name>Wooden ruler</Long_Name>
</Sensor_Name>
<Source_Name>
<Long_Name>Polarstern</Long_Name>
</Source_Name>
<Temporal_Coverage>
<Start_Date>2024-08-16</Start_Date>
<Stop_Date>2024-09-26</Stop_Date>
</Temporal_Coverage>
<Data_Set_Progress>Complete</Data_Set_Progress>
<Spatial_Coverage>
<Southernmost_Latitude>84.49375</Southernmost_Latitude>
<Northernmost_Latitude>89.958889</Northernmost_Latitude>
<Westernmost_Longitude>42.983087</Westernmost_Longitude>
<Easternmost_Longitude>-150.66699</Easternmost_Longitude>
</Spatial_Coverage>
<Project>
<Short_Name>AC3</Short_Name>
<Long_Name>Arctic Amplification</Long_Name>
</Project>
<Access_Constraints>unrestricted</Access_Constraints>
<Use_Constraints>CC-BY-4.0: Creative Commons Attribution 4.0 International</Use_Constraints>
<Data_Set_Language>English</Data_Set_Language>
<Data_Center>
<Data_Center_Name>
<Short_Name>PANGAEA</Short_Name>
<Long_Name>Data Publisher for Earth &amp; Environmental Science</Long_Name>
</Data_Center_Name>
<Data_Center_URL>https://www.pangaea.de/</Data_Center_URL>
<Personnel>
<Role>Data Center Contact</Role>
<First_Name>Michael</First_Name>
<Last_Name>Diepenbroek</Last_Name>
<Email>info@pangaea.de</Email>
<Contact_Address>
<Address>Leobener Str.</Address>
<City>Bremen</City>
<Province_or_State>Bremen</Province_or_State>
<Postal_Code>28359</Postal_Code>
<Country>Germany</Country>
</Contact_Address>
</Personnel>
</Data_Center>
<Distribution>
<Distribution_Media>online</Distribution_Media>
<Distribution_Size>566 data points</Distribution_Size>
<Distribution_Format>text/tab-separated-values</Distribution_Format>
</Distribution>
<Reference>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</Reference>
<Reference>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</Reference>
<Summary>During the Polarstern cruise PS144 from August 2024 to October 2024 in the central Arctic Ocean a regular foldable wooden ruler was used to measure the height of the snow and/or the surface scattering layer during 10 ice stations. All measurements were done 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 mostly measured along T-shaped transects with side lengths of 5 to 7 meters, further refined in the "Location" column. 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.993445"!</Summary>
<Related_URL>
<URL>http://en.wikipedia.org/wiki/ISO_6709</URL>
<Description>LATITUDE</Description>
</Related_URL>
<Related_URL>
<URL>http://en.wikipedia.org/wiki/ISO_6709</URL>
<Description>LONGITUDE</Description>
</Related_URL>
<Related_URL>
<URL>http://en.wikipedia.org/wiki/ISO_8601</URL>
<Description>DATE/TIME</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.17815/jlsrf-3-163</URL>
<Description>Polarstern</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.org/10.57738/BZPM_0794_2025</URL>
<Description>The Expedition PS144 of the Research Vessel POLARSTERN to the Arctic Ocean in 2023 /2024</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.pangaea.de/10.1594/PANGAEA.990496</URL>
<Description>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)</Description>
</Related_URL>
<Related_URL>
<URL>https://gepris.dfg.de/gepris/projekt/268020496</URL>
<Description>AC3</Description>
</Related_URL>
<Metadata_Name>DIF</Metadata_Name>
<Metadata_Version>9.4</Metadata_Version>
<DIF_Creation_Date>2026-04-13</DIF_Creation_Date>
<Last_DIF_Revision_Date>2026-04-29</Last_DIF_Revision_Date>
</DIF>
