Studies Reconstructing Greenland Climate During the Eemian and Beyond
The primary goal of this collaborative project between three institutions is to understand the extent and evolution of the Greenland Ice Sheet (GrIS) during the Eemian period (roughly 130,000 to 115,000 years ago, the last major interglacial period in Earth's history) and the deglaciation immed...
Main Author: | |
---|---|
Format: | Dataset |
Language: | unknown |
Published: |
Arctic Data Center
2015
|
Subjects: | |
Online Access: | https://doi.org/10.18739/A2348GH6X |
id |
dataone:doi:10.18739/A2348GH6X |
---|---|
record_format |
openpolar |
spelling |
dataone:doi:10.18739/A2348GH6X 2024-06-03T18:46:41+00:00 Studies Reconstructing Greenland Climate During the Eemian and Beyond Audrey Yau GEOGRAPHIC REGION > ARCTIC, NORTH AMERICA > GREENLAND, ENVELOPE(-100.0,-20.0,83.0,60.0) BEGINDATE: 2012-01-01T00:00:00Z ENDDATE: 2015-12-31T00:00:00Z 2015-04-19T00:00:00Z https://doi.org/10.18739/A2348GH6X unknown Arctic Data Center DRILLING PLATFORM MANNED FIELD STATION environment Dataset 2015 dataone:urn:node:ARCTIC https://doi.org/10.18739/A2348GH6X 2024-06-03T18:18:20Z The primary goal of this collaborative project between three institutions is to understand the extent and evolution of the Greenland Ice Sheet (GrIS) during the Eemian period (roughly 130,000 to 115,000 years ago, the last major interglacial period in Earth's history) and the deglaciation immediately preceding it ("Termination 2"). The GrIS is an important agent influencing sea level, and Arctic and global climate, on multiple timescales. Its dynamics need to be understood in the context of past climate changes, but there is little information available about the footprint, volume, and elevation of the GrIS prior to the last ice age due to the absence of continuous ice core records prior to 123,000 years ago. During the Eemian, the GrIS was perhaps half its present size, contributing on the order of 3 m to "excess" sea level rise. Characterizing the evolution of the GrIS during glacial termination 2 and the Eemian would improve our understanding of its dynamics, and enhance our ability to make projections of sea level rise during the coming centuries. Older ice does exist at the bottoms of previously drilled ice cores, but the extraction of age and climate information from this older ice is hampered by the fact that it is stratigraphically disturbed and, in many cases, contaminated with soil or bedrock material. These investigators propose several novel methods to date this disturbed and/or "dirty" ice and to extract information on climate and ice sheet extent. The investigators will combine their new measurements and other available data to develop a more complete history of the GrIS during termination 2 and the Eemian. They will work with ice sheet modelers to investigate the constraints that the Eemian data provide for the models and improve their predictive capability. These efforts have the potential to improve our ability to predict the contribution of the GrIS to sea-level rise in the coming decades to centuries. Educational and outreach activities include the training of two graduate students, inclusion of this research in summer teacher enrichment programs, a lecture series for graduate students and postdocs, and communication of the results through the news media. PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH Blunier, T., M. L. Bender, B. Barnett, and J. C. Von Fisher. "Planetary fertility during the past 400 ka based on the triple isotope composition of O2 in trapped gases from the Vostok ice core," Climate of the Past, v.8, 2012, p. 1509. Rubino, M., D. M. Etheridge, C. M. Trudinger, C. E. Allison, M. O. Battle, R. L. Langenfelds, L. P. Steele, M. Curran, M. Bender, J. W. C. White, T. M. Jenk, T. Blunier, and R. J. Francey. "Rubino, M., D. M. Etheridge, C. M. Trudinger, C. E. Allison, M. O. Battle, R. L. Langenfelds, L. P. Steele, M. Curran, M. Bender, J. W. C. White, T. M. Jenk, T. Blunier, and R. J. Francey," Journal of Geophysical Research-Atmospheres, v.118, 2013, p. doi:10.10. Dataset Arctic Greenland ice core Ice Sheet Arctic Data Center (via DataONE) Arctic Greenland Steele ENVELOPE(-60.710,-60.710,-70.980,-70.980) ENVELOPE(-100.0,-20.0,83.0,60.0) |
institution |
Open Polar |
collection |
Arctic Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:ARCTIC |
language |
unknown |
topic |
DRILLING PLATFORM MANNED FIELD STATION environment |
spellingShingle |
DRILLING PLATFORM MANNED FIELD STATION environment Audrey Yau Studies Reconstructing Greenland Climate During the Eemian and Beyond |
topic_facet |
DRILLING PLATFORM MANNED FIELD STATION environment |
description |
The primary goal of this collaborative project between three institutions is to understand the extent and evolution of the Greenland Ice Sheet (GrIS) during the Eemian period (roughly 130,000 to 115,000 years ago, the last major interglacial period in Earth's history) and the deglaciation immediately preceding it ("Termination 2"). The GrIS is an important agent influencing sea level, and Arctic and global climate, on multiple timescales. Its dynamics need to be understood in the context of past climate changes, but there is little information available about the footprint, volume, and elevation of the GrIS prior to the last ice age due to the absence of continuous ice core records prior to 123,000 years ago. During the Eemian, the GrIS was perhaps half its present size, contributing on the order of 3 m to "excess" sea level rise. Characterizing the evolution of the GrIS during glacial termination 2 and the Eemian would improve our understanding of its dynamics, and enhance our ability to make projections of sea level rise during the coming centuries. Older ice does exist at the bottoms of previously drilled ice cores, but the extraction of age and climate information from this older ice is hampered by the fact that it is stratigraphically disturbed and, in many cases, contaminated with soil or bedrock material. These investigators propose several novel methods to date this disturbed and/or "dirty" ice and to extract information on climate and ice sheet extent. The investigators will combine their new measurements and other available data to develop a more complete history of the GrIS during termination 2 and the Eemian. They will work with ice sheet modelers to investigate the constraints that the Eemian data provide for the models and improve their predictive capability. These efforts have the potential to improve our ability to predict the contribution of the GrIS to sea-level rise in the coming decades to centuries. Educational and outreach activities include the training of two graduate students, inclusion of this research in summer teacher enrichment programs, a lecture series for graduate students and postdocs, and communication of the results through the news media. PUBLICATIONS PRODUCED AS A RESULT OF THIS RESEARCH Blunier, T., M. L. Bender, B. Barnett, and J. C. Von Fisher. "Planetary fertility during the past 400 ka based on the triple isotope composition of O2 in trapped gases from the Vostok ice core," Climate of the Past, v.8, 2012, p. 1509. Rubino, M., D. M. Etheridge, C. M. Trudinger, C. E. Allison, M. O. Battle, R. L. Langenfelds, L. P. Steele, M. Curran, M. Bender, J. W. C. White, T. M. Jenk, T. Blunier, and R. J. Francey. "Rubino, M., D. M. Etheridge, C. M. Trudinger, C. E. Allison, M. O. Battle, R. L. Langenfelds, L. P. Steele, M. Curran, M. Bender, J. W. C. White, T. M. Jenk, T. Blunier, and R. J. Francey," Journal of Geophysical Research-Atmospheres, v.118, 2013, p. doi:10.10. |
format |
Dataset |
author |
Audrey Yau |
author_facet |
Audrey Yau |
author_sort |
Audrey Yau |
title |
Studies Reconstructing Greenland Climate During the Eemian and Beyond |
title_short |
Studies Reconstructing Greenland Climate During the Eemian and Beyond |
title_full |
Studies Reconstructing Greenland Climate During the Eemian and Beyond |
title_fullStr |
Studies Reconstructing Greenland Climate During the Eemian and Beyond |
title_full_unstemmed |
Studies Reconstructing Greenland Climate During the Eemian and Beyond |
title_sort |
studies reconstructing greenland climate during the eemian and beyond |
publisher |
Arctic Data Center |
publishDate |
2015 |
url |
https://doi.org/10.18739/A2348GH6X |
op_coverage |
GEOGRAPHIC REGION > ARCTIC, NORTH AMERICA > GREENLAND, ENVELOPE(-100.0,-20.0,83.0,60.0) BEGINDATE: 2012-01-01T00:00:00Z ENDDATE: 2015-12-31T00:00:00Z |
long_lat |
ENVELOPE(-60.710,-60.710,-70.980,-70.980) ENVELOPE(-100.0,-20.0,83.0,60.0) |
geographic |
Arctic Greenland Steele |
geographic_facet |
Arctic Greenland Steele |
genre |
Arctic Greenland ice core Ice Sheet |
genre_facet |
Arctic Greenland ice core Ice Sheet |
op_doi |
https://doi.org/10.18739/A2348GH6X |
_version_ |
1800869723852767232 |