globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-012-1398-9
Scopus记录号: 2-s2.0-84874949579
论文题名:
Snow accumulation and its moisture origin over Dome Argus, Antarctica
作者: Wang Y.; Sodemann H.; Hou S.; Masson-Delmotte V.; Jouzel J.; Pang H.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2013
卷: 40, 期:2017-03-04
起始页码: 731
结束页码: 742
语种: 英语
英文摘要: The spatial and temporal variability of snow accumulation near Dome Argus, Antarctica, is assessed using new snow pit and stake measurement data together with existing snow pit, ice core and automatic weather station records. Snow accumulation rate shows large inter-annual variations, but stable multi-decadal levels over the last seven centuries. Spatial variations in snow accumulation within the space of 50 km of Dome Argus are relatively small, probably thanks to the smooth topography. A comparison of theses accumulation observations with ECMWF reanalyses (ERA-40 and ERA-Interim) suggests ECMWF reanalysis captures the seasonal variations, but underestimates the overall snow accumulation at Dome Argus by ~50 %. The moisture sources for precipitation over Dome Argus are examined by means of a Lagrangian moisture source diagnostic, based on the tracing of specific humidity changes along air parcel trajectories, for the period 2000-2004 using operational ECMWF analysis data. Dome Argus mainly receives moisture from the mid-latitude (46 ± 4°S) South Indian Ocean, with a seasonal latitudinal shift of about 6°. Compared to other central East Antarctic deep ice core sites such as Dome F, Dome C, Vostok, and EPICA Dronning Maud Land, Dome Argus has a more southerly moisture origin, probably due to topographic influences on the moisture transport paths. These results have important implications for the interpretation of future ice cores at Dome Argus. © 2012 Springer-Verlag.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54950
Appears in Collections:过去全球变化的重建

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作者单位: MOE, Key Laboratory for Coast and Island Development, School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing, 210093, China; Shandong Provincial Key Laboratory of Marine Ecological Restoration, Shandong Marine Fisheries Research Institute, Yantai, 264006, China; Institute for Atmospheric and Climate Science, ETH Zürich, Zurich, Switzerland; State Key Laboratory of Cryospheric Science, Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou, 73000, China; IPSL/Laboratoire des Sciences du Climat et de l'Environnement (LSCE), CEA/CNRS/UVSQ, CE Saclay, 91191 Gif-sur-Yvette, France

Recommended Citation:
Wang Y.,Sodemann H.,Hou S.,et al. Snow accumulation and its moisture origin over Dome Argus, Antarctica[J]. Climate Dynamics,2013-01-01,40(2017-03-04)
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