Article (Scientific journals)
An updated and quality controlled surface mass balance dataset for Antarctica
Favier, Vincent; Agosta, Cécile; Parouty, Soazig et al.
2013In The Cryosphere, 7, p. 583-597
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Keywords :
observation; surface mass balance; Antarctica
Abstract :
[en] We present an updated and quality controlled surface mass balance (SMB) database for the Antarctic ice sheet. We retrieved a total of 5284 SMB data documented with important meta-data, to which a filter was applied to discard data with limited spatial and temporal representativeness, too small measurement accuracy, or lack of quality control. A total of 3438 reliable data was obtained, which is about four times more than by applying the same data filtering process to previously available databases. New important data with high spatial resolution are now available over long traverses, and at low elevation in some areas. However, the quality control led to a considerable reduction in the spatial density of data in several regions, particularly over West Antarctica. Over interior plateaus, where the SMB is low, the spatial density of mea- surements remained high. This quality controlled dataset was compared to results from ERA-Interim reanalysis to assess model representativeness over Antarctica, and also to identify large areas where data gaps impede model validation. Except for very few areas (e.g. Adelie Land), the elevation range between 200 m and 1000 m a.s.l. is not correctly sampled in the field, and measurements do not allow a thorough validation of models in regions with complex topography, where the highest scattering of SMB values is reported. Clearly, increasing the spatial density of field measurements at low elevations, in the Antarctic Peninsula and in West Antarctica remains a scientific priority.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Favier, Vincent;  UJF-CNRS, Laboratoire de Glaciologie et Géophysique de l’Environnement (LGGE), UMR 5183, 54 rue Molière, BP 96, 38402 Saint Martin d’ Hères, France
Agosta, Cécile ;  Université de Liège - ULiège, Département de géographie / UJF-CNRS, Laboratoire de Glaciologie et Géophysique de l’Environnement (LGGE), UMR 5183, 54 rue Molière, BP 96, 38402 Saint Martin d’ Hères, France
Parouty, Soazig;  UJF-CNRS, Laboratoire de Glaciologie et Géophysique de l’Environnement (LGGE), UMR 5183, 54 rue Molière, BP 96, 38402 Saint Martin d’ Hères, France
Durand, Gaël;  UJF-CNRS, Laboratoire de Glaciologie et Géophysique de l’Environnement (LGGE), UMR 5183, 54 rue Molière, BP 96, 38402 Saint Martin d’ Hères, France
Delaygue, Gilles;  UJF-CNRS, Laboratoire de Glaciologie et Géophysique de l’Environnement (LGGE), UMR 5183, 54 rue Molière, BP 96, 38402 Saint Martin d’ Hères, France
Gallée, Hubert;  UJF-CNRS, Laboratoire de Glaciologie et Géophysique de l’Environnement (LGGE), UMR 5183, 54 rue Molière, BP 96, 38402 Saint Martin d’ Hères, France
Drouet, Anne-Sophie;  UJF-CNRS, Laboratoire de Glaciologie et Géophysique de l’Environnement (LGGE), UMR 5183, 54 rue Molière, BP 96, 38402 Saint Martin d’ Hères, France
Trouvillez, Alexandre;  IRSTEA, UR ETGR Erosion Torrentielle Neige Avalanches, Domaine universitaire, 2, rue de la Papeterie, 38402 Saint-Martin-d’He`res, France
Krinner, Gerhard;  UJF-CNRS, Laboratoire de Glaciologie et Géophysique de l’Environnement (LGGE), UMR 5183, 54 rue Molière, BP 96, 38402 Saint Martin d’ Hères, France
Language :
English
Title :
An updated and quality controlled surface mass balance dataset for Antarctica
Publication date :
2013
Journal title :
The Cryosphere
ISSN :
1994-0416
eISSN :
1994-0424
Publisher :
Copernicus, Katlenberg-Lindau, Germany
Volume :
7
Pages :
583-597
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
FP7 - 226375 - ICE2SEA - Ice2sea - estimating the future contribution of continental ice to sea-level rise
Funders :
CE - Commission Européenne [BE]
Available on ORBi :
since 27 February 2013

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