Hecht Cedric cedric.hecht@awi.de Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 2024 Snow density profiles at Pegelfeld Süd in 2008 dataset https://doi.org/10.1594/PANGAEA.963364 2024-10-18T11:59:40 https://doi.org/10.1594/PANGAEA.963323 This is a collection of shallow snow density data sets from research station Neumayer II, Neumayer III and the Kottas traverse between Neumayer, Kottas camp and Kohnen station. The original snow density data are available as Excel and txt files and as density-depth profiles in png format. The data were collected between 2001 and 2021. Measurements in 2019, (2020) and 2021 were taken on a monthly basis. Before this period, sampling took place on a rather irregular basis, but often once a year, at Neumayer station in most cases by members of the overwintering team, lead by the overwinterer for the air chemistry observatory (SPUSO). Sampling during the Kottas traverse was carried out by members of the traverse personnel. The sampling devices used were • conventional steal cylinders with a length of about 20 cm and an inner diameter of 6 cm and a wall thickness of 1 mm; the exact measurements were recorded in the protocols. Due to damage by ice layers the cylinders often have to be sharpened again and therefore become shorter over time ( (method listed in sensor.awi.de as awi_snow_sampler_3). • single-tube carbon fibre liners, as described in Schaller et al. (2016) with a length of 1 m and an inner diameter of around 10 cm and a wall thickness of 1 mm (method listed in sensor.awi.de as awi_snow_sampler_2); • dual-tube carbon liner probing system developed by Dallmayr et al. (2020) (method listed in sensor.awi.de as awi_snow_sampler_1). More details about sampling event nomenclature is provided below in the file description. For the steal cylinder sampling method, sample density was determined for individual depth sections, thus providing a stratigraphic density profile. For both liner methods, density was determined as the bulk density, i.e. the average density of the whole snow core sampled with the carbon liner tube. If it was possible to remove the snow core in a mostly intact way from the liner, it was cut into samples in a aluminium tray, as described in Schaller et al. (2016). This also eventually provides a density profile. Sample depth vary, as thick ice layers often inhibit deeper penetration with either method. In some cases, the carbon liner was damaged, resulting in a non-cylindrical form of the snow sample. Such events were noted in the protocols and an attempt made to correct the density accordingly. A description of the density data sets' is provided in the MSc thesis by Cedric Hecht under supervision of Olaf Eisen. Schaller Christoph Florian christoph.schaller@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/christoph-schaller.html 0000-0003-1898-1188 Freitag Johannes Johannes.Freitag@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/johannes-freitag.html 0000-0003-2654-9440 Kipfstuhl Sepp sepp.kipfstuhl@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/sepp-kipfstuhl.html 0000-0003-1495-5273 Laepple Thomas Thomas.Laepple@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/thomas-laepple.html 0000-0001-8108-7520 Steen-Larsen Hans Christian Hans.Christian.Steen-Larsen@uib.no 0000-0002-7202-5907 Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X 2016 A representative density profile of the North Greenland snowpack journal article The Cryosphere 10(5) https://doi.org/10.5194/tc-10-1991-2016 1991-2002 2023 Collection of original density profile protocols including additional details in German language Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven https://download.pangaea.de/reference/123945/attachments/DensityProfiles_Neumayer_raw-protocols.zip -8.415860000000006 -8.415860000000006 -70.71500999999994 -70.71500999999994 -8.415860000000006 -70.71500999999994 2008-01-31T00:00:00 2008-01-31T00:00:00 0.05 2.0 vertical profile NM03_08_S01 -70.71501 -8.41586 2008-01-31T00:00:00 Dronning Maud Land, Antarctica Neumayer_based NEUMAYER III https://doi.org/10.17815/jlsrf-2-152 Snow pit sampler, AWI, tube Cylinder, Der Schacht wurde südwestlich des Südpegelfeldes ausgehoben. Die Tiefe betrug etwa 2,00 Meter. Mitwirkende: Karin, Franzi, Julia, Jürgen, Seweryn, Stefan 151 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Event label Event Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X Event DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X Date/Time LATITUDE Latitude http://en.wikipedia.org/wiki/ISO_6709 Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X Latitude LONGITUDE Longitude http://en.wikipedia.org/wiki/ISO_6709 Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X Longitude Sample number Sample no Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X Sample no DEPTH, ice/snow Depth ice/snow m depth http://purl.obolibrary.org/obo/PATO_0001595 ice http://purl.obolibrary.org/obo/ENVO_01000277 snow Length L http://dbpedia.org/resource/Length Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X Depth ice/snow [m] Density, ice Density ice g/cm**3 Density http://dbpedia.org/resource/Density ice http://purl.obolibrary.org/obo/ENVO_01000277 Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X Density ice [g/cm**3] Depth, description Depth desc depth http://purl.obolibrary.org/obo/PATO_0001595 description Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X in m Depth desc Image IMAGE Eisen Olaf olaf.eisen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/olaf-eisen.html 0000-0002-6380-962X IMAGE CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels ProcLevel1 PANGAEA data processing level 1 https://wiki.pangaea.de/wiki/Processing_levels#PANGAEA_data_processing_level_1 citable Dronning Maud Land Neumayer Station snow accumulation snow cores snow density snow pit author102036 author24628 author27488 author29695 author53764 author58978 author968 basis5304 campaign25457 curlevel30 event3088757 geocode1599 geocode1600 geocode1601 geocode5059 inst32 journal4140 license21 method16062 param128037 param150836 param151382 param508750 pi27488 proclevel20 ref123945 ref86970 term1073131 term1073200 term21330 term2687887 term40710 term43792 term43863 term43975 term44363 term47301 term52462 term52952 term67969 term69070 topotype3