气候变化领域集成服务门户(CCPortal): Seasonal and spatial variability in snow chemistry at eclipse Icefield, Yukon, Canada

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DOI	10.3189/172756406781811998
	Seasonal and spatial variability in snow chemistry at eclipse Icefield, Yukon, Canada
	Yalcin, Kaplan; Wake, Cameron P.; Kang, Shichang; Kreutz, Karl J.; Whitlow, Sallie I.
发表日期	2006
ISSN	0260-3055
起始页码	230
结束页码	+
卷号	43
英文摘要	Samples collected from four snow pits at Eclipse Icefield, Yukon, Canada, were analyzed for stable isotopes and major ions to assess seasonal and spatial variability in snow chemistry. Accumulation since the end of the 2001 summer season over the 0.1 km(2) area sampled ranges from 0.77 to 1. 16 m w.e. Snow-pit stratigraphy and chemical records demonstrate that the low accumulation at pit 3 is due to an under-representation of winter snow accumulation at that site. For all major-ion species, chemical concentrations are independent of snow accumulation rate. Seasonal variations are evident in the majorion records and can be divided between sea-salt species (Na+, Cl-) that peak in late fall to winter, and dust (Ca2+, Mg2+, K+) and other species (NH4+, NO3-, SO42-, C2O2-) that peak in late spring to summer. The signal common to all four snow pits identified by empirical orthogonal function analysis ranges from 49% of the total variance for Na+ and Cl- to as high as 80% of the total variance for SO42-. There is greater spatial variability in species associated with coarse-mode particles (Na+, Cl-, Ca2+, Mg2+) than in species present mainly in accumulation-mode aerosols (SO42-, NH4+) or in the gas phase (NO3).
关键词	ICE-CORE ACCUMULATION RATE OXYGEN-ISOTOPE GREENLAND SUMMIT PRECIPITATION TERRITORY ANTARCTICA DEPOSITION NITRATE
学科领域	Geology
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000245520800033
来源期刊	ANNALS OF GLACIOLOGY, VOL 43, 2006
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111449
推荐引用方式 GB/T 7714	Yalcin, Kaplan,Wake, Cameron P.,Kang, Shichang,et al. Seasonal and spatial variability in snow chemistry at eclipse Icefield, Yukon, Canada[J]. 中国科学院青藏高原研究所,2006,43.
APA	Yalcin, Kaplan,Wake, Cameron P.,Kang, Shichang,Kreutz, Karl J.,&Whitlow, Sallie I..(2006).Seasonal and spatial variability in snow chemistry at eclipse Icefield, Yukon, Canada.ANNALS OF GLACIOLOGY, VOL 43, 2006,43.
MLA	Yalcin, Kaplan,et al."Seasonal and spatial variability in snow chemistry at eclipse Icefield, Yukon, Canada".ANNALS OF GLACIOLOGY, VOL 43, 2006 43(2006).