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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
Source PublicationGEOPHYSICAL RESEARCH LETTERS
Volume43Issue:10Pages:5302-5308
SubtypeArticle
AbstractPrecipitation 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 HeadingsScience & Technology ; Physical Sciences
DOI10.1002/2016GL068513
WOS KeywordARCTIC PRECIPITATION ; STABLE HYDROGEN ; LAKE-SEDIMENTS ; ISOTOPES ; OXYGEN ; RECORD
Indexed BySCI
Language英语
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000378347500078
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5728
Collection加速器质谱中心
Affiliation1.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
Recommended Citation
GB/T 7714
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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