气候变化领域集成服务门户(CCPortal): Late twentieth century increase in northern Spitsbergen (Svalbard) glacier-derived runoff tracked by coralline algal Ba/Ca ratios

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DOI	10.1007/s00382-021-05642-x
	Late twentieth century increase in northern Spitsbergen (Svalbard) glacier-derived runoff tracked by coralline algal Ba/Ca ratios
	Hetzinger S.; Halfar J.; Zajacz Z.; Möller M.; Wisshak M.
发表日期	2021
ISSN	0930-7575
卷号	56 期号:2021-09-10
英文摘要	The Arctic cryosphere is changing rapidly due to global warming. Northern Svalbard is a warming hotspot with a temperature rise of ~ 6 °C over the last three decades. Concurrently, modelled data suggest a marked increase in glacier runoff during recent decades in northern Svalbard, and runoff is projected to increase. However, observational data from before anthropogenic influence are sparse and the potential effects on the surface ocean are unclear. Here, we present a 200-year record of Ba/Ca ratios measured in annual increment-forming coralline algae from northern Spitsbergen as a proxy for past glacier-derived meltwater input. Our record shows a significant increasing trend in algal Ba/Ca ratios from the late-1980s onwards matching modelled regional runoff data, suggesting a drastic increase in land-based runoff. The rate of increase is unprecedented during the last two centuries and captures the impact of amplified warming on the coastal surface ocean in the high Arctic. The algal Ba/Ca runoff proxy offers an opportunity to reconstruct past land-based runoff variability in Arctic settings in high resolution, providing important data for validating and improving climate modelling studies. © 2021, The Author(s).
英文关键词	Ba/Ca; Coralline algae; Freshwater; Glacier; Runoff proxy; Svalbard
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183295
作者单位	Institut Für Geologie, Universität Hamburg, Bundesstr. 55, Hamburg, 20416, Germany; GEOMAR Helmholtz-Zentrum Für Ozeanforschung Kiel, Wischhofstr. 1-3, Kiel, 24148, Germany; CPS-Department, University of Toronto Mississauga, 3359 Mississauga Rd. N, Mississauga, ON L5L 1C6, Canada; Department of Earth Sciences, University of Toronto, 22 Russell Street, Toronto, ON M5S 3B1, Canada; Department of Earth Sciences, University of Geneva, Rue des Maraichers 13, Geneva, 1205, Switzerland; Institute of Geography, University of Bremen, Bibliothekstr. 1, Bremen, 28359, Germany; Geography Department, Humboldt-Universität Zu Berlin, Unter den Linden 6, Berlin, 10099, Germany; Senckenberg Am Meer, Marine Research Department, Südstrand 40, Wilhelmshaven, 26382, Germany
推荐引用方式 GB/T 7714	Hetzinger S.,Halfar J.,Zajacz Z.,et al. Late twentieth century increase in northern Spitsbergen (Svalbard) glacier-derived runoff tracked by coralline algal Ba/Ca ratios[J],2021,56(2021-09-10).
APA	Hetzinger S.,Halfar J.,Zajacz Z.,Möller M.,&Wisshak M..(2021).Late twentieth century increase in northern Spitsbergen (Svalbard) glacier-derived runoff tracked by coralline algal Ba/Ca ratios.Climate Dynamics,56(2021-09-10).
MLA	Hetzinger S.,et al."Late twentieth century increase in northern Spitsbergen (Svalbard) glacier-derived runoff tracked by coralline algal Ba/Ca ratios".Climate Dynamics 56.2021-09-10(2021).