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A major increase in winter snowfall during the middle Holocene on western Greenland caused by reduced sea ice in Baffin Bay and the Labrador Sea
Thomas, Elizabeth K.1,2; Briner, Jason P.2; Ryan-Henry, John J.3,4,5; Huang, Yongsong3,6
2016-05-28
发表期刊GEOPHYSICAL RESEARCH LETTERS
卷号43期号:10页码:5302-5308
文章类型Article
摘要Precipitation is predicted to increase in the Arctic as temperature increases and sea ice retreats. Yet the mechanisms controlling precipitation in the Arctic are poorly understood and quantified only by the short, sparse instrumental record. We use hydrogen isotope ratios (delta H-2) of lipid biomarkers in lake sediments from western Greenland to reconstruct precipitation seasonality and summer temperature during the past 8 kyr. Aquatic biomarker delta H-2 was 100 parts per thousand more negative from 6 to 4 ka than during the early and late Holocene, which we interpret to reflect increased winter snowfall. The middle Holocene also had high summer air temperature, decreased early winter sea ice in Baffin Bay and the Labrador Sea, and a strong, warm West Greenland Current. These results corroborate model predictions of winter snowfall increases caused by sea ice retreat and furthermore suggest that warm currents advecting more heat into the polar seas may enhance Arctic evaporation and snowfall.
WOS标题词Science & Technology ; Physical Sciences
DOI10.1002/2016GL068513
关键词[WOS]ARCTIC PRECIPITATION ; STABLE HYDROGEN ; LAKE-SEDIMENTS ; ISOTOPES ; OXYGEN ; RECORD
收录类别SCI
语种英语
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
WOS记录号WOS:000378347500078
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5728
专题加速器质谱中心
作者单位1.Univ Massachusetts, Dept Geosci, Amherst, MA 01003 USA
2.Univ Buffalo, Dept Geol, Buffalo, NY USA
3.Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA
4.Univ Rhode Isl, Dept Marine Affairs, Kingston, RI 02881 USA
5.Roger Williams Univ, Sch Law, Bristol, RI 02809 USA
6.Chinese Acad Sci, Inst Earth Environm, Xian, Peoples R China
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Thomas, Elizabeth K.,Briner, Jason P.,Ryan-Henry, John J.,et al. A major increase in winter snowfall during the middle Holocene on western Greenland caused by reduced sea ice in Baffin Bay and the Labrador Sea[J]. GEOPHYSICAL RESEARCH LETTERS,2016,43(10):5302-5308.
APA Thomas, Elizabeth K.,Briner, Jason P.,Ryan-Henry, John J.,&Huang, Yongsong.(2016).A major increase in winter snowfall during the middle Holocene on western Greenland caused by reduced sea ice in Baffin Bay and the Labrador Sea.GEOPHYSICAL RESEARCH LETTERS,43(10),5302-5308.
MLA Thomas, Elizabeth K.,et al."A major increase in winter snowfall during the middle Holocene on western Greenland caused by reduced sea ice in Baffin Bay and the Labrador Sea".GEOPHYSICAL RESEARCH LETTERS 43.10(2016):5302-5308.
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