Hirsch, Nora; Hörhold, Maria; Dallmayr, Remi; Laepple, Thomas; Freitag, Johannes; Meyer, Hanno; Weiner, Mikaela (2023): Stable water isotopologues of arrays of high resolution 1 m snow cores from across Dronning Maud Land, East Antarctic Plateau [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.956273
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Abstract:
A set of 1 m firn profiles was sampled in December 2018 across a traverse of ~ 100 km near Kohnen Station to quantify stratigraphic noise in high resolution isotope records. At each of six different locations (D2, C4, C5, D7, D24, D38), 5 profiles were extracted on one line, perpendicularly to the overall large scale wind direction and with an interprofile spacing of 10 m. Each firn profile was vertically extracted from the snow surface by inserting a 1 m pipe of carbon fiber at the sidewall of a snow-pit. Vertical target resolution was 1.1 cm in the upper 16.5 cm and 3.3 cm in the lower part. Due compression and expanding while handling, transportation and cutting at site, we assume a maximum depth uncertainty from these steps of 2 cm. All samples (N = 1249) were packed in plastic bags and transported to Germany in a constantly frozen state. Measurements of the stable water isotopic composition (δ¹⁸O, δD) of the firn samples were done using a Cavity Ring-Down Spectroscopy instrument (CRDS) of PICARRO Inc (model L2140-i) in the Stable Isotope Facility at the Alfred Wegener Institute in Potsdam, Germany. Post-run correction was done as described in Münch et al., (2016 - doi:10.5194/cp-12-1565-2016). Scaling to the VSMOW/SLAP (Vienna Standard Mean Ocean Water/StandardLight Antarctic Precipitation) scale results in the δ-notation, describing the ratio of heavy to light isotopes in ‰. In-house standards were used for quality control. The mean combined measurement uncertainty is 0.07‰ for δ¹⁸O and 0.5‰ for δD (root mean square deviation, RMSD).
Related to:
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung (2016): Neumayer III and Kohnen Station in Antarctica operated by the Alfred Wegener Institute. Journal of large-scale research facilities JLSRF, 2, A85, https://doi.org/10.17815/jlsrf-2-152
Laepple, Thomas; Hörhold, Maria; Dallmayr, Remi; Freitag, Johannes; Hirsch, Nora (2023): Local snow dunes / sastrugi heights across the plateau of Dronning Maud Land, East Antarctica. PANGAEA, https://doi.org/10.1594/PANGAEA.956663
Documentation:
Münch, Thomas; Kipfstuhl, Sepp; Freitag, Johannes; Meyer, Hanno; Laepple, Thomas (2016): Regional climate signal vs. local noise: a two-dimensional view of water isotopes in Antarctic firn at Kohnen Station, Dronning Maud Land. Climate of the Past, 12(7), 1565-1581, https://doi.org/10.5194/cp-12-1565-2016
Project(s):
Space-time structure of climate change @ AWI (AWI_SPACE)
Coverage:
Median Latitude: -75.426612 * Median Longitude: -2.618705 * South-bound Latitude: -75.581500 * West-bound Longitude: -3.430330 * North-bound Latitude: -75.128710 * East-bound Longitude: -0.791410
Date/Time Start: 2018-12-10T00:00:00 * Date/Time End: 2018-12-15T00:00:00
Minimum DEPTH, ice/snow: 0.005 m * Maximum DEPTH, ice/snow: 0.995 m
Event(s):
2018_Kohnen_C4 * Latitude: -75.519530 * Longitude: -3.376910 * Date/Time Start: 2018-12-10T00:00:00 * Date/Time End: 2018-12-15T00:00:00 * Location: Dronning Maud Land * Campaign: Kohnen_based * Basis: Kohnen Station * Method/Device: Firn corer (FIRNC)
2018_Kohnen_C5 * Latitude: -75.507350 * Longitude: -3.301740 * Date/Time Start: 2018-12-10T00:00:00 * Date/Time End: 2018-12-15T00:00:00 * Location: Dronning Maud Land * Campaign: Kohnen_based * Basis: Kohnen Station * Method/Device: Firn corer (FIRNC)
2018_Kohnen_D2 * Latitude: -75.581500 * Longitude: -3.430330 * Date/Time Start: 2018-12-10T00:00:00 * Date/Time End: 2018-12-15T00:00:00 * Location: Dronning Maud Land * Campaign: Kohnen_based * Basis: Kohnen Station * Method/Device: Firn corer (FIRNC)
Domain attribute(s):
Comment:
The ISOLAB Facility metadata is part of the sensor web:
Sensor (2022): Metadata for laboratory ISOLAB Facility – Stable Isotope Laboratory Potsdam at Current Version. hdl:10013/sensor.ddc92f54-4c63-492d-81c7-696260694001
Sensor (2022): Metadata for Isotopic Water Liquid Analyzer for the online determination of the hydrogen and oxygen isotopic composition using Cavity Ring-Down Spectroscopy (CRDS) L2140-i: hdl:10013/sensor.33733b4e-78bc-4524-ae27-9d92a1542ae9
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Hirsch, Nora | |||
| 2 | Date/Time of event | Date/Time | Hirsch, Nora | |||
| 3 | Location ID | Loc ID | Hirsch, Nora | |||
| 4 | LATITUDE | Latitude | Hirsch, Nora | Geocode | ||
| 5 | LONGITUDE | Longitude | Hirsch, Nora | Geocode | ||
| 6 | Position | Position | m | Hirsch, Nora | profile position along the 60 m snow height measurements | |
| 7 | Profile | Profile | Hirsch, Nora | snow profile number | ||
| 8 | Snow height | Snow h | m | Hirsch, Nora | snow surface height at the snow profile, arbitrary ground zero | |
| 9 | Sample number | Sample no | Hirsch, Nora | number of isotope sample | ||
| 10 | DEPTH, ice/snow | Depth ice/snow | m | Hirsch, Nora | Geocode – mean | |
| 11 | Depth, ice/snow, top/minimum | Depth ice/snow top | m | Hirsch, Nora | depth of isotope sample | |
| 12 | Depth, ice/snow, bottom/maximum | Depth ice/snow bot | m | Hirsch, Nora | depth of isotope sample | |
| 13 | δ18O, water | δ18O H2O | ‰ SMOW | Hirsch, Nora | Cavity Ring-Down Spectrometer (CRDS), PICARRO, L2140i | vs. VSMOW |
| 14 | δ Deuterium, water | δD H2O | ‰ SMOW | Hirsch, Nora | Cavity Ring-Down Spectrometer (CRDS), PICARRO, L2140i | vs. VSMOW |
| 15 | Deuterium excess | d xs | ‰ | Hirsch, Nora | ||
| 16 | δ18O, water, standard deviation | δ18O H2O std dev | ± | Hirsch, Nora | Cavity Ring-Down Spectrometer (CRDS), PICARRO, L2140i | |
| 17 | δ Deuterium, standard deviation | δD std dev | ± | Hirsch, Nora | Cavity Ring-Down Spectrometer (CRDS), PICARRO, L2140i | |
| 18 | Deuterium excess, standard deviation | d xs std dev | ± | Hirsch, Nora |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
16237 data points
Download Data
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