caa a22 4500 605473730 CHVBK 20210128100344.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00382-014-2213-6 doi (NATIONALLICENCE)springer-10.1007/s00382-014-2213-6 Precipitation pathways for five new ice core sites in Ellsworth Land, West Antarctica [Elektronische Daten] [Elizabeth Thomas, Thomas Bracegirdle] Ice cores provide a wealth of information about past climate and atmospheric circulation however a good understanding of the precipitation patterns, potential source regions and transport pathways is essential in their interpretation. Here we investigate the precipitation pathways for a transect of five new ice cores drilled in the southern Antarctic Peninsula and Ellsworth Land. We utilize in situ observations from automatic weather stations to confirm that the European Centre for Medium-Range Weather Forecasts ERA-Interim reanalysis data adequately captures annual and sub-annual variability, with evidence of a slight cold bias in the 2m temperatures. Back trajectory analysis, from the British Atmospheric Data Centre trajectory service, reveals that warm and snowy years are associated with air masses that originate (5days before reaching the site) from the Amundsen-Bellingshausen Sea, while cold and dry years are associated with air masses from the Antarctic continent. There is a clear seasonal migration in the trajectories at each site, reflecting the east to west migration of the Amundsen Sea Low, known to have a strong influence on climate in this region. Springer-Verlag Berlin Heidelberg, 2014 Antarctica nationallicence Climate variability nationallicence Ice cores nationallicence Precipitation nationallicence Back trajectories nationallicence Thomas Elizabeth British Antarctic Survey, High Cross, CB3 0ET, Cambridge, UK aut Bracegirdle Thomas British Antarctic Survey, High Cross, CB3 0ET, Cambridge, UK aut Climate Dynamics Springer Berlin Heidelberg 44/7-8(2015-04-01), 2067-2078 0930-7575 44:7-8<2067 2015 44 382 https://doi.org/10.1007/s00382-014-2213-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00382-014-2213-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Thomas Elizabeth British Antarctic Survey, High Cross, CB3 0ET, Cambridge, UK aut NATIONALLICENCE 700 1- Bracegirdle Thomas British Antarctic Survey, High Cross, CB3 0ET, Cambridge, UK aut NATIONALLICENCE 773 0- Climate Dynamics Springer Berlin Heidelberg 44/7-8(2015-04-01), 2067-2078 0930-7575 44:7-8<2067 2015 44 382