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DOI	10.5194/tc-10-1089-2016
	The climatic mass balance of Svalbard glaciers: A 10-year simulation with a coupled atmosphere-glacier mass balance model
	Aas K.S.; Dunse T.; Collier E.; Schuler T.V.; Berntsen T.K.; Kohler J.; Luks B.
发表日期	2016
ISSN	19940416
卷号	10 期号:3
英文摘要	In this study we simulate the climatic mass balance of Svalbard glaciers with a coupled atmosphere-glacier model with 3 km grid spacing, from September 2003 to September 2013. We find a mean specific net mass balance of -257mmw.e. yr-1, corresponding to a mean annual mass loss of about 8.7 Gt, with large interannual variability. Our results are compared with a comprehensive set of mass balance, meteorological, and satellite measurements. Model temperature biases of 0.19 and -1.9 °C are found at two glacier automatic weather station sites. Simulated climatic mass balance is mostly within about 100mmw.e. yr-1 of stake measurements, and simulated winter accumulation at the Austfonna ice cap shows mean absolute errors of 47 and 67mmw.e. yr-1 when compared to radar-derived values for the selected years 2004 and 2006. Comparison of modeled surface height changes from 2003 to 2008, and satellite altimetry reveals good agreement in both mean values and regional differences. The largest deviations from observations are found for winter accumulation at Hansbreen (up to around 1000mmw.e. yr-1), a site where sub-grid topography and wind redistribution of snow are important factors. Comparison with simulations using 9 km grid spacing reveal considerable differences on regional and local scales. In addition, 3 km grid spacing allows for a much more detailed comparison with observations than what is possible with 9 km grid spacing. Further decreasing the grid spacing to 1 km appears to be less significant, although in general precipitation amounts increase with resolution. Altogether, the model compares well with observations and offers possibilities for studying glacier climatic mass balance on Svalbard both historically as well as based on climate projections. © 2016 Author(s). CC Attribution 3.0 License.
学科领域	annual variation; climate variation; glacier mass balance; ice cap; precipitation assessment; satellite altimetry; topography; wind field; Arctic; Austfonna; Hansbreen; Nordaustlandet; Spitsbergen; Svalbard; Svalbard and Jan Mayen
语种	英语
scopus关键词	annual variation; climate variation; glacier mass balance; ice cap; precipitation assessment; satellite altimetry; topography; wind field; Arctic; Austfonna; Hansbreen; Nordaustlandet; Spitsbergen; Svalbard; Svalbard and Jan Mayen
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119643
作者单位	Department of Geosciences, University of Oslo, Oslo, Norway; Climate System Research Group, Institute of Geography, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany; Norwegian Polar Institute, Tromsø, Norway; Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland
推荐引用方式 GB/T 7714	Aas K.S.,Dunse T.,Collier E.,et al. The climatic mass balance of Svalbard glaciers: A 10-year simulation with a coupled atmosphere-glacier mass balance model[J],2016,10(3).
APA	Aas K.S..,Dunse T..,Collier E..,Schuler T.V..,Berntsen T.K..,...&Luks B..(2016).The climatic mass balance of Svalbard glaciers: A 10-year simulation with a coupled atmosphere-glacier mass balance model.Cryosphere,10(3).
MLA	Aas K.S.,et al."The climatic mass balance of Svalbard glaciers: A 10-year simulation with a coupled atmosphere-glacier mass balance model".Cryosphere 10.3(2016).