DOI: 10.1007/s00382-011-1103-4
Scopus记录号: 2-s2.0-84855277786
论文题名: A 40-year accumulation dataset for Adelie Land, Antarctica and its application for model validation
作者: Agosta C. ; Favier V. ; Genthon C. ; Gallée H. ; Krinner G. ; Lenaerts J.T.M. ; van den Broeke M.R.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 38, 期: 2017-01-02 起始页码: 75
结束页码: 86
语种: 英语
英文关键词: Accumulation
; Antarctica
; Mass balance
; Model validation
; Spatial variability
; Temporal variability
英文摘要: The GLACIOCLIM-SAMBA (GS) Antarctic accumulation monitoring network, which extends from the coast of Adelie Land to the Antarctic plateau, has been surveyed annually since 2004. The network includes a 156-km stake-line from the coast inland, along which accumulation shows high spatial and interannual variability with a mean value of 362 mm water equivalent a-1. In this paper, this accumulation is compared with older accumulation reports from between 1971 and 1991. The mean and annual standard deviation and the km-scale spatial pattern of accumulation were seen to be very similar in the older and more recent data. The data did not reveal any significant accumulation trend over the last 40 years. The ECMWF analysis-based forecasts (ERA-40 and ERA-Interim), a stretched-grid global general circulation model (LMDZ4) and three regional circulation models (PMM5, MAR and RACMO2), all with high resolution over Antarctica (27-125 km), were tested against the GS reports. They qualitatively reproduced the meso-scale spatial pattern of the annual-mean accumulation except MAR. MAR significantly underestimated mean accumulation, while LMDZ4 and RACMO2 overestimated it. ERA-40 and the regional models that use ERA-40 as lateral boundary condition qualitatively reproduced the chronology of interannual variability but underestimated the magnitude of interannual variations. Two widely used climatologies for Antarctic accumulation agreed well with the mean GS data. The model-based climatology was also able to reproduce the observed spatial pattern. These data thus provide new stringent constraints on models and other large-scale evaluations of the Antarctic accumulation. © 2011 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55415
Appears in Collections: 过去全球变化的重建
There are no files associated with this item.
作者单位: UJF-Grenoble 1 / CNRS, Laboratoire de Glaciologie et de Géophysique de l'Environnement UMR 5183, 54 rue Molière, BP 96, 38402 Saint Martin d'Hères Cedex, France; CNRS / UJF-Grenoble 1, Laboratoire de Glaciologie et de Géophysique de l'Environnement UMR 5183, 54 rue Molière, BP 96, 38402 Saint Martin d'Hères Cedex, France; Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Netherlands
Recommended Citation:
Agosta C.,Favier V.,Genthon C.,et al. A 40-year accumulation dataset for Adelie Land, Antarctica and its application for model validation[J]. Climate Dynamics,2012-01-01,38(2017-01-02)