High-resolution stable water isotope and glacio-chemical composition of a firn core from the northern Antarctic Peninsula ...

• Main Authors: Hoffmann-Abdi, Kirstin, Fernandoy, Francisco, Meyer, Hanno, Freitag, Johannes, Opel, Thomas, McConnell, Joseph R, Schneider, Christoph
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2021
• Subjects: Antarctic Peninsula; firn core; glacio-chemistry; stable water isotopes; Ice drill; ANT-Land_2016_AntarcticPeninsula; AWI Antarctic Land Expedition; Polar Terrestrial Environmental Systems @ AWI AWI_Envi; Antarc*; Antarctic; Ice cap
• Online Access: https://dx.doi.org/10.1594/pangaea.939719; https://doi.pangaea.de/10.1594/PANGAEA.939719

The firn core OH-12 was retrieved from Plateau Laclavere, a small ice cap on the northernmost end of the Antarctic Peninsula at about 1090 m above sea level in January 2016. The core was drilled down to 19.93 m depth. Subsamples for stable water isotope analysis were obtained from the core at 5 cm resolution. Stable water isotope measurements were performed in autumn 2016 using cavity ring-down spectrometers L2130-i and L2140-i (Picarro Inc.) coupled to an auto-sampler (L2130-i: PAL HTC-xt, CTC Analytics AG; L2140-i: Picarro Autosampler, Picarro Inc.). Glacio-chemical parameters (hydrogen peroxide, sulphur, sodium, black carbon) were determined in summer 2017 using a Continuous Flow Analysis (CFA) system as described by Röthlisberger et al. (2000) and McConnell et al. (2002, 2007). Sulphur and sodium concentrations were measured using two Thermo Finnigan Element2 High Resolution-Inductively Coupled Plasma-Mass Spectrometry (HR-ICP-MS) instruments. Black carbon (BC) was analyzed with a Single Particle Soot ...