DOI: 10.1029/2018JG004385
Scopus记录号: 2-s2.0-85052840070
论文题名: Coralline Algae Archive Fjord Surface Water Temperatures in Southwest Greenland
作者: Williams S. ; Halfar J. ; Zack T. ; Hetzinger S. ; Blicher M. ; Juul-Pedersen T. ; Kronz A. ; Noël B. ; van den Broeke M. ; van de Berg W.J.
刊名: Journal of Geophysical Research: Biogeosciences
ISSN: 21698953
出版年: 2018
卷: 123, 期: 8 起始页码: 2617
结束页码: 2626
语种: 英语
英文关键词: coralline algae
; glacial runoff
; sea surface temperature
Scopus关键词: algae
英文摘要: One of the most dramatic signs of ongoing global change is the mass loss of the Greenland Ice Sheet and the resulting rise in sea level, whereby most of the recent ice sheet mass loss can be attributed to an increase in meltwater runoff. The retreat and thinning of Greenland glaciers has been caused by rising air and ocean temperatures over the past decades. Despite the global scale impact of the changing ice sheet balance, estimates of glacial runoff in Greenland rarely extend past several decades, thus limiting our understanding of long-term glacial response to temperature. Here we present a 42-year long annually resolved red coralline algal Mg/Ca proxy temperature record from a southwestern Greenland fjord, with temperature ranging from 1.5 to 4 °C (standard error = 1.06 °C). This temperature time series in turn tracks the general trend of glacial runoff from four West Greenland glaciers discharging freshwater into the fjord (all p < 0.001). The algal time series further exhibits significant correlations to Irminger Sea temperature patterns, which are transmitted to western Greenland fjords via the West Greenland Current. The 42-year long record demonstrates the potential of annual increment forming coralline algae, which are known to live up to 650 years and which are abundant along the Greenland coastline, for reconstructing time series of sea surface temperature. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113387
Appears in Collections: 气候减缓与适应
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作者单位: CPS-Department, University of Toronto Mississauga, Mississauga, ON, Canada; Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden; Institut für Geologie, Universität Hamburg, Hamburg, Germany; Greenland Climate Research Centre, Greenland Institute of Natural Resources, Nuuk, Greenland; Geowissenschaftliches Zentrum, Universität Göttingen, Göttingen, Germany; Institute for Marine and Atmospheric Research Utrecht, Utrecht University, Utrecht, Netherlands
Recommended Citation:
Williams S.,Halfar J.,Zack T.,et al. Coralline Algae Archive Fjord Surface Water Temperatures in Southwest Greenland[J]. Journal of Geophysical Research: Biogeosciences,2018-01-01,123(8)