气候变化领域集成服务门户(CCPortal): Measurement report: Spatial variations in ionic chemistry and water-stable isotopes in the snowpack on glaciers across Svalbard during the 2015-2016 snow accumulation season

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DOI	10.5194/acp-21-3163-2021
	Measurement report: Spatial variations in ionic chemistry and water-stable isotopes in the snowpack on glaciers across Svalbard during the 2015-2016 snow accumulation season
	Barbaro E.; Koziol K.; Björkman M.P.; Vega C.P.; Zdanowicz C.; Martma T.; Gallet J.-C.; Kȩpski D.; Larose C.; Luks B.; Tolle F.; Schuler T.V.; Uszczyk A.; Spolaor A.
发表日期	2021
ISSN	1680-7316
起始页码	3163
结束页码	3180
卷号	21 期号:4
英文摘要	The Svalbard archipelago, located at the Arctic sea-ice edge between 74 and 81°N, is ∼60 % covered by glaciers. The region experiences rapid variations in atmospheric flow during the snow season (from late September to May) and can be affected by air advected from both lower and higher latitudes, which likely impact the chemical composition of snowfall. While long-term changes in Svalbard snow chemistry have been documented in ice cores drilled from two high-elevation glaciers, the spatial variability of the snowpack composition across Svalbard is comparatively poorly understood. Here, we report the results of the most comprehensive seasonal snow chemistry survey to date, carried out in April 2016 across 22 sites on seven glaciers across the archipelago. At each glacier, three snowpits were sampled along the altitudinal profiles and the collected samples were analysed for major ions (Ca2+, K+, Na+, Mg2+, NH+4, SO2-4, Br-, Cl-, and NO-3) and stable water isotopes (δ18O, δ2H). The main aims were to investigate the natural and anthropogenic processes influencing the snowpack and to better understand the influence of atmospheric aerosol transport and deposition patterns on the snow chemical composition. The snow deposited in the southern region of Svalbard is characterized by the highest total ionic loads, mainly attributed to sea-salt particles. Both NO-3 and NH+4 in the seasonal snowpack reflect secondary aerosol formation and post-depositional changes, resulting in very different spatial deposition patterns: NO-3 has its highest loading in northwestern Spitsbergen and NH+4 in the south-west. The Br- enrichment in snow is highest in north-eastern glacier sites closest to areas of extensive sea-ice coverage. Spatial correlation patterns between Na+ and δ18O suggest that the influence of long-range transport of aerosols on snow chemistry is proportionally greater above 600-700ma.s.l. © Author(s) 2021.
语种	英语
scopus关键词	aerosol; glacier; ionic composition; long range transport; snow accumulation; snowpack; spatial variation; stable isotope; Arctic; Spitsbergen; Svalbard; Svalbard and Jan Mayen
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/247097
作者单位	Institute of Polar Sciences, ISP-CNR, Via Torino 155, Venice Mestre, 30170, Italy; Department of Environmental Sciences, Informatics and Statistics, Ca' Foscari University of Venice, Via Torino 155, Venice, 30172, Italy; Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology, G. Narutowicza 11/12, Gdańsk, 80-233, Poland; Department of Earth Sciences, University of Gothenburg, Box 460, Gothenburg, 40530, Sweden; Department of Earth Sciences, Uppsala University, Villavägen 16, Uppsala, 76236, Sweden; Department of Geology, Tallinn University of Technology, Ehitajate tee 5, Tallinn, 19086, Estonia; Norwegian Polar Institute, Tromsø, 9296, Norway; Institute of Geophysics, Polish Academy of Sciences, Ksiȩcia Janusza 64, Warsaw, 01-452, Poland; Environmental MicrobialGenomics, Laboratoire Ampère, CNRS, University of Lyon, Lyon, France; Université de Franche-Comté, Besancon, FEMTO-ST, UMR 6174 CNRS, Besançon, France; Departement of Geosciences, University of Oslo, Oslo, Norway; Arc...
推荐引用方式 GB/T 7714	Barbaro E.,Koziol K.,Björkman M.P.,et al. Measurement report: Spatial variations in ionic chemistry and water-stable isotopes in the snowpack on glaciers across Svalbard during the 2015-2016 snow accumulation season[J],2021,21(4).
APA	Barbaro E..,Koziol K..,Björkman M.P..,Vega C.P..,Zdanowicz C..,...&Spolaor A..(2021).Measurement report: Spatial variations in ionic chemistry and water-stable isotopes in the snowpack on glaciers across Svalbard during the 2015-2016 snow accumulation season.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(4).
MLA	Barbaro E.,et al."Measurement report: Spatial variations in ionic chemistry and water-stable isotopes in the snowpack on glaciers across Svalbard during the 2015-2016 snow accumulation season".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.4(2021).