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
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 bioma...
Published in: | Geophysical Research Letters |
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Online Access: | http://ir.ieecas.cn/handle/361006/5728 https://doi.org/10.1002/2016GL068513 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/5728 2023-06-11T04:08:29+02:00 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. Briner, Jason P. Ryan-Henry, John J. Huang, Yongsong 2016-05-28 http://ir.ieecas.cn/handle/361006/5728 https://doi.org/10.1002/2016GL068513 英语 eng GEOPHYSICAL RESEARCH LETTERS http://ir.ieecas.cn/handle/361006/5728 doi:10.1002/2016GL068513 Science & Technology Physical Sciences ARCTIC PRECIPITATION STABLE HYDROGEN LAKE-SEDIMENTS ISOTOPES OXYGEN RECORD Geology Geosciences Multidisciplinary Article 期刊论文 2016 ftchinacascieeca https://doi.org/10.1002/2016GL068513 2023-05-08T13:23:00Z 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. Article in Journal/Newspaper Arctic Baffin Bay Baffin Bay Baffin Greenland Labrador Sea Sea ice Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Arctic Baffin Bay Greenland Geophysical Research Letters 43 10 5302 5308 |
institution |
Open Polar |
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Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
Science & Technology Physical Sciences ARCTIC PRECIPITATION STABLE HYDROGEN LAKE-SEDIMENTS ISOTOPES OXYGEN RECORD Geology Geosciences Multidisciplinary |
spellingShingle |
Science & Technology Physical Sciences ARCTIC PRECIPITATION STABLE HYDROGEN LAKE-SEDIMENTS ISOTOPES OXYGEN RECORD Geology Geosciences Multidisciplinary Thomas, Elizabeth K. Briner, Jason P. Ryan-Henry, John J. Huang, Yongsong 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 |
topic_facet |
Science & Technology Physical Sciences ARCTIC PRECIPITATION STABLE HYDROGEN LAKE-SEDIMENTS ISOTOPES OXYGEN RECORD Geology Geosciences Multidisciplinary |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Thomas, Elizabeth K. Briner, Jason P. Ryan-Henry, John J. Huang, Yongsong |
author_facet |
Thomas, Elizabeth K. Briner, Jason P. Ryan-Henry, John J. Huang, Yongsong |
author_sort |
Thomas, Elizabeth K. |
title |
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 |
title_short |
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 |
title_full |
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 |
title_fullStr |
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 |
title_full_unstemmed |
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 |
title_sort |
major increase in winter snowfall during the middle holocene on western greenland caused by reduced sea ice in baffin bay and the labrador sea |
publishDate |
2016 |
url |
http://ir.ieecas.cn/handle/361006/5728 https://doi.org/10.1002/2016GL068513 |
geographic |
Arctic Baffin Bay Greenland |
geographic_facet |
Arctic Baffin Bay Greenland |
genre |
Arctic Baffin Bay Baffin Bay Baffin Greenland Labrador Sea Sea ice |
genre_facet |
Arctic Baffin Bay Baffin Bay Baffin Greenland Labrador Sea Sea ice |
op_relation |
GEOPHYSICAL RESEARCH LETTERS http://ir.ieecas.cn/handle/361006/5728 doi:10.1002/2016GL068513 |
op_doi |
https://doi.org/10.1002/2016GL068513 |
container_title |
Geophysical Research Letters |
container_volume |
43 |
container_issue |
10 |
container_start_page |
5302 |
op_container_end_page |
5308 |
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1768381771737464832 |