Calcium and sodium concentrations of the Talos Dome ice core, Antarctica ...

• Main Authors: Schüpbach, Simon, Federer, Urs, Kaufmann, Patrik R, Albani, Samuel, Barbante, Carlo, Stocker, Thomas F, Fischer, Hubertus
• Format: Dataset
• Language: English
• Published: PANGAEA 2014
• Subjects: DEPTH, ice/snow; AGE; Sodium ion; Calcium; Ice drill; Continuous Flow Analysis; Antarc*; Antarctic; Antarctica; ice core; Ross Sea; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.833044; https://doi.pangaea.de/10.1594/PANGAEA.833044

In this study we report on new non-sea salt calcium (nssCa2+, mineral dust proxy) and sea salt sodium (ssNa+, sea ice proxy) records along the East Antarctic Talos Dome deep ice core in centennial resolution reaching back 150 thousand years (ka) before present. During glacial conditions nssCa2+ fluxes in Talos Dome are strongly related to temperature as has been observed before in other deep Antarctic ice core records, and has been associated with synchronous changes in the main source region (southern South America) during climate variations in the last glacial. However, during warmer climate conditions Talos Dome mineral dust input is clearly elevated compared to other records mainly due to the contribution of additional local dust sources in the Ross Sea area. Based on a simple transport model, we compare nssCa2+ fluxes of different East Antarctic ice cores. From this multi-site comparison we conclude that changes in transport efficiency or atmospheric lifetime of dust particles do have a minor effect ... : Depth is measured at top of sample (1 cm resolution)AGE = AICC2012 ice age (kyrs BP, i.e. before 1950 AD) ...