Precipitation pathways for five new ice core sites in Ellsworth Land, West Antarctica

Verfasser / Beitragende:
[Elizabeth Thomas, Thomas Bracegirdle]
Ort, Verlag, Jahr:
2015
Enthalten in:
Climate Dynamics, 44/7-8(2015-04-01), 2067-2078
Format:
Artikel (online)
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024 7 0 |a 10.1007/s00382-014-2213-6  |2 doi 
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245 0 0 |a Precipitation pathways for five new ice core sites in Ellsworth Land, West Antarctica  |h [Elektronische Daten]  |c [Elizabeth Thomas, Thomas Bracegirdle] 
520 3 |a 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. 
540 |a Springer-Verlag Berlin Heidelberg, 2014 
690 7 |a Antarctica  |2 nationallicence 
690 7 |a Climate variability  |2 nationallicence 
690 7 |a Ice cores  |2 nationallicence 
690 7 |a Precipitation  |2 nationallicence 
690 7 |a Back trajectories  |2 nationallicence 
700 1 |a Thomas  |D Elizabeth  |u British Antarctic Survey, High Cross, CB3 0ET, Cambridge, UK  |4 aut 
700 1 |a Bracegirdle  |D Thomas  |u British Antarctic Survey, High Cross, CB3 0ET, Cambridge, UK  |4 aut 
773 0 |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 44/7-8(2015-04-01), 2067-2078  |x 0930-7575  |q 44:7-8<2067  |1 2015  |2 44  |o 382 
856 4 0 |u https://doi.org/10.1007/s00382-014-2213-6  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s00382-014-2213-6  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Thomas  |D Elizabeth  |u British Antarctic Survey, High Cross, CB3 0ET, Cambridge, UK  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Bracegirdle  |D Thomas  |u British Antarctic Survey, High Cross, CB3 0ET, Cambridge, UK  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Climate Dynamics  |d Springer Berlin Heidelberg  |g 44/7-8(2015-04-01), 2067-2078  |x 0930-7575  |q 44:7-8<2067  |1 2015  |2 44  |o 382