Stable water isotopologues of arrays of high resolution 1 m snow cores from across Dronning Maud Land, East Antarctic Plateau ...

• Main Authors: Hirsch, Nora, Hörhold, Maria, Dallmayr, Remi, Laepple, Thomas, Freitag, Johannes, Meyer, Hanno, Weiner, Mikaela
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Dronning Maud Land; East Antarctic plateau; snow cores; stable water isotopes; Event label; Date/Time of event; Location ID; LATITUDE; LONGITUDE; Position; Profile; Snow height; Sample number; DEPTH, ice/snow; Depth, ice/snow, top/minimum; Depth, ice/snow, bottom/maximum; δ18O, water; δ Deuterium, water; Deuterium excess; δ18O, water, standard deviation; δ Deuterium, standard deviation; Deuterium excess, standard deviation; Firn corer; Cavity Ring-Down Spectrometer CRDS, PICARRO, L2140i; Kohnen_based; Kohnen Station; Polar Terrestrial Environmental Systems @ AWI AWI_Envi; Space-time structure of climate change @ AWI AWI_SPACE; Antarctic; Kohnen; Antarc*
• Online Access: https://dx.doi.org/10.1594/pangaea.956273; https://doi.pangaea.de/10.1594/PANGAEA.956273

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 ... : 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-81c7-696260694001Sensor (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 ...