NOAA/WDS Paleoclimatology - Patriot Hills, West Antarctica 135,000 Year Blue Ice Isotope Data
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Ice Core. The data include parameters of ice cores with a geographic location of Antarctica. The time period coverage is from 135000 to 1000 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
- Cite as: Turney, C.S.M.; Fogwill, C.J.; Golledge, N.R.; McKay, N.P.; van Sebille, E.; Jones, R.T.; Etheridge, D.M.; Rubino, M.; Thornton, D.P.; Davies, S.M.; Bronk Ramsey, C.; Thomas, Z.A.; Bird, M.I.; Munksgaard, N.C.; Kohno, M.; Woodward, J.; Winter, K.; Weyrich, L.S.; Rootes, C.M.; Millman, H.; Albert, P.G.; Rivera, A.; van Ommen, T.D.; Curran, M.A.J.; Moy, A.D.; Rahmstorf, S.; Kawamura, K.; Hillenbrand, C.-D.; Weber, M.E.; Manning, C.J.; Young, J.; Cooper, A. (2020-01-22): NOAA/WDS Paleoclimatology - Patriot Hills, West Antarctica 135,000 Year Blue Ice Isotope Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/ejde-8240. Accessed [date].
- Please refer to Credit tab for full citation information.
- doi:10.25921/ejde-8240
- noaa-icecore-28610
- NCEI DSI 1200_02
- NCEI DSI 1200_01
noaa-icecore-28610
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Distributor | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | Data Center Contact
NOAA World Data Service for Paleoclimatology 828-271-4800 paleo@noaa.gov |
Coverage Description | Date Range: 135000 cal yr BP to 1000 cal yr BP; |
Time Period | -133050 to 950 |
Spatial Bounding Box Coordinates |
N: -80.3
S: -80.3
E: -81.35
W: -81.35
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Spatial Coverage Map |
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Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns
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Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Data update frequency not available |
Supplemental Information |
STUDY NOTES: Isotope data (d18O and dD) from Patriot Hills blue ice, Ellsworth Mountains, Antarctica, as a proxy for West Antarctic ice mass loss during the Last Interglacial
ABSTRACT SUPPLIED BY ORIGINATOR: The future response of the Antarctic ice sheet to rising temperatures remains highly uncertain. A useful period for assessing the sensitivity of Antarctica to warming is the Last Interglacial (LIG) (129 to 116 ky), which experienced warmer polar temperatures and higher global mean sea level (GMSL) (+6 to 9 m) relative to present day. LIG sea level cannot be fully explained by Greenland Ice Sheet melt (~2 m), ocean thermal expansion, and melting mountain glaciers (~1 m), suggesting substantial Antarctic mass loss was initiated by warming of Southern Ocean waters, resulting from a weakening Atlantic meridional overturning circulation in response to North Atlantic surface freshening. Here, we report a blue-ice record of ice sheet and environmental change from the Weddell Sea Embayment at the periphery of the marine-based West Antarctic Ice Sheet (WAIS), which is underlain by major methane hydrate reserves. Constrained by a widespread volcanic horizon and supported by ancient microbial DNA analyses, we provide evidence for substantial mass loss across the Weddell Sea Embayment during the LIG, most likely driven by ocean warming and associated with destabilization of subglacial hydrates. Ice sheet modeling supports this interpretation and suggests that millennial-scale warming of the Southern Ocean could have triggered a multimeter rise in global sea levels. Our data indicate that Antarctica is highly vulnerable to projected increases in ocean temperatures and may drive ice-climate feedbacks that further amplify warming. |
Purpose | Records of past temperature, precipitation, atmospheric trace gases, and other aspects of climate and environment derived from ice cores drilled on glaciers and ice caps around the world. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. |
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Theme keywords | Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Last Modified: 2024-04-03
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