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

doi:10.1002/2016GL068513

	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
	Ryan-Henry, John J.4,5,6; Briner, Jason P.1; Thomas, Elizabeth K.1,2; Huang, Yongsong 3,6
刊名	GEOPHYSICAL RESEARCH LETTERS
	2016-05-28
卷号	43 期号:10 页码:5302-5308
DOI	10.1002/2016GL068513
文献子类	Article
英文摘要	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关键词	ARCTIC PRECIPITATION ; STABLE HYDROGEN ; LAKE-SEDIMENTS ; ISOTOPES ; OXYGEN ; RECORD
WOS研究方向	Geology
语种	英语
WOS记录号	WOS:000378347500078
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5728]
专题	地球环境研究所_加速器质谱中心
作者单位	1.Univ Buffalo, Dept Geol, Buffalo, NY USA 2.Univ Massachusetts, Dept Geosci, Amherst, MA 01003 USA 3.Chinese Acad Sci, Inst Earth Environm, Xian, Peoples R China 4.Roger Williams Univ, Sch Law, Bristol, RI 02809 USA 5.Univ Rhode Isl, Dept Marine Affairs, Kingston, RI 02881 USA 6.Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA
推荐引用方式 GB/T 7714	Ryan-Henry, John J.,Briner, Jason P.,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[J]. GEOPHYSICAL RESEARCH LETTERS,2016,43(10):5302-5308.
APA	Ryan-Henry, John J.,Briner, Jason P.,Thomas, Elizabeth K.,&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	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".GEOPHYSICAL RESEARCH LETTERS 43.10(2016):5302-5308.