Airborne-radar and ice-core observations of annual snow accumulation over Thwaites Glacier, West Antarctica confirm the spatiotemporal variability of global and regional atmospheric models
We use an airborne-radar method, verified with ice-core accumulation records, to determine the spatiotemporal variations of snow accumulation over Thwaites Glacier, West Antarctica between 1980 and 2009. We also present a regional evaluation of modeled accumulation in Antarctica. Comparisons between...
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ftunivutrecht:oai:dspace.library.uu.nl:1874/290625 2023-07-23T04:15:48+02:00 Airborne-radar and ice-core observations of annual snow accumulation over Thwaites Glacier, West Antarctica confirm the spatiotemporal variability of global and regional atmospheric models Medley, B. Joughin, I. Das, S.B. Steig, E. J. Conway, H. Gogineni, S. Criscitiello, A.S. McConnell, J.R. Smith, B.E. van den Broeke, M.R. Lenaerts, J.T.M. Bromwich, D.H. Nicolas, J.P. Marine and Atmospheric Research Sub Dynamics Meteorology 2013 image/pdf https://dspace.library.uu.nl/handle/1874/290625 en eng 0094-8276 https://dspace.library.uu.nl/handle/1874/290625 info:eu-repo/semantics/OpenAccess Article 2013 ftunivutrecht 2023-07-02T00:51:55Z We use an airborne-radar method, verified with ice-core accumulation records, to determine the spatiotemporal variations of snow accumulation over Thwaites Glacier, West Antarctica between 1980 and 2009. We also present a regional evaluation of modeled accumulation in Antarctica. Comparisons between radar-derived measurements and model outputs show that three global models capture the interannual variability well (r > 0.9), but a high-resolution regional model (RACMO2) has better absolute accuracy and captures the observed spatial variability (r = 0.86). Neither the measured nor modeled accumulation records over Thwaites Glacier show any trend since 1980. Although an increase in accumulation may potentially accompany the observed warming in the region, the projected trend is too small to detect over the 30 year record. Article in Journal/Newspaper Antarc* Antarctica ice core Thwaites Glacier West Antarctica Utrecht University Repository Thwaites Glacier ENVELOPE(-106.750,-106.750,-75.500,-75.500) West Antarctica |
institution |
Open Polar |
collection |
Utrecht University Repository |
op_collection_id |
ftunivutrecht |
language |
English |
description |
We use an airborne-radar method, verified with ice-core accumulation records, to determine the spatiotemporal variations of snow accumulation over Thwaites Glacier, West Antarctica between 1980 and 2009. We also present a regional evaluation of modeled accumulation in Antarctica. Comparisons between radar-derived measurements and model outputs show that three global models capture the interannual variability well (r > 0.9), but a high-resolution regional model (RACMO2) has better absolute accuracy and captures the observed spatial variability (r = 0.86). Neither the measured nor modeled accumulation records over Thwaites Glacier show any trend since 1980. Although an increase in accumulation may potentially accompany the observed warming in the region, the projected trend is too small to detect over the 30 year record. |
author2 |
Marine and Atmospheric Research Sub Dynamics Meteorology |
format |
Article in Journal/Newspaper |
author |
Medley, B. Joughin, I. Das, S.B. Steig, E. J. Conway, H. Gogineni, S. Criscitiello, A.S. McConnell, J.R. Smith, B.E. van den Broeke, M.R. Lenaerts, J.T.M. Bromwich, D.H. Nicolas, J.P. |
spellingShingle |
Medley, B. Joughin, I. Das, S.B. Steig, E. J. Conway, H. Gogineni, S. Criscitiello, A.S. McConnell, J.R. Smith, B.E. van den Broeke, M.R. Lenaerts, J.T.M. Bromwich, D.H. Nicolas, J.P. Airborne-radar and ice-core observations of annual snow accumulation over Thwaites Glacier, West Antarctica confirm the spatiotemporal variability of global and regional atmospheric models |
author_facet |
Medley, B. Joughin, I. Das, S.B. Steig, E. J. Conway, H. Gogineni, S. Criscitiello, A.S. McConnell, J.R. Smith, B.E. van den Broeke, M.R. Lenaerts, J.T.M. Bromwich, D.H. Nicolas, J.P. |
author_sort |
Medley, B. |
title |
Airborne-radar and ice-core observations of annual snow accumulation over Thwaites Glacier, West Antarctica confirm the spatiotemporal variability of global and regional atmospheric models |
title_short |
Airborne-radar and ice-core observations of annual snow accumulation over Thwaites Glacier, West Antarctica confirm the spatiotemporal variability of global and regional atmospheric models |
title_full |
Airborne-radar and ice-core observations of annual snow accumulation over Thwaites Glacier, West Antarctica confirm the spatiotemporal variability of global and regional atmospheric models |
title_fullStr |
Airborne-radar and ice-core observations of annual snow accumulation over Thwaites Glacier, West Antarctica confirm the spatiotemporal variability of global and regional atmospheric models |
title_full_unstemmed |
Airborne-radar and ice-core observations of annual snow accumulation over Thwaites Glacier, West Antarctica confirm the spatiotemporal variability of global and regional atmospheric models |
title_sort |
airborne-radar and ice-core observations of annual snow accumulation over thwaites glacier, west antarctica confirm the spatiotemporal variability of global and regional atmospheric models |
publishDate |
2013 |
url |
https://dspace.library.uu.nl/handle/1874/290625 |
long_lat |
ENVELOPE(-106.750,-106.750,-75.500,-75.500) |
geographic |
Thwaites Glacier West Antarctica |
geographic_facet |
Thwaites Glacier West Antarctica |
genre |
Antarc* Antarctica ice core Thwaites Glacier West Antarctica |
genre_facet |
Antarc* Antarctica ice core Thwaites Glacier West Antarctica |
op_relation |
0094-8276 https://dspace.library.uu.nl/handle/1874/290625 |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1772176831123816448 |