Water stable isotope record of ice core WAIS divide
Changes in atmospheric circulation over the past five decades have enhanced the wind-driven inflow of warm ocean water onto the Antarctic continental shelf, where it melts ice shelves from below. Atmospheric circulation changes have also caused rapid warming over the West Antarctic Ice Sheet, and co...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.886046 2024-09-15T17:48:03+00:00 Water stable isotope record of ice core WAIS divide Steig, Eric J Ding, Quinghua White, James W C Küttel, Meinrad Rupper, Summer B Neumann, T A Neff, Peter D Gallant, Ailie J E Mayewski, Paul Andrew Taylor, Kendrick C Hoffmann, Georg Dixon, Daniel A Schoenemann, Spruce W Markle, Bradley R Fudge, Tyler J Schneider, David P Schauer, Andrew J Teel, Rebecca P Vaughn, Bruce H Burgener, Landon Williams, Jessica Korotkikh, Elena Gkinis, Vasileios LATITUDE: -79.468000 * LONGITUDE: 12.086000 * MINIMUM DEPTH, ice/snow: 120.00 m * MAXIMUM DEPTH, ice/snow: 150.00 m 2018 text/tab-separated-values, 601 data points https://doi.pangaea.de/10.1594/PANGAEA.886046 https://doi.org/10.1594/PANGAEA.886046 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.886046 https://doi.org/10.1594/PANGAEA.886046 CC-BY-NC-ND-3.0: Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Steig, Eric J; Ding, Quinghua; White, James W C; Küttel, Meinrad; Rupper, Summer B; Neumann, T A; Neff, Peter D; Gallant, Ailie J E; Mayewski, Paul Andrew; Taylor, Kendrick C; Hoffmann, Georg; Dixon, Daniel A; Schoenemann, Spruce W; Markle, Bradley R; Fudge, Tyler J; Schneider, David P; Schauer, Andrew J; Teel, Rebecca P; Vaughn, Bruce H; Burgener, Landon; Williams, Jessica; Korotkikh, Elena (2013): Recent climate and ice-sheet changes in West Antarctica compared with the past 2,000 years. Nature Geoscience, 6(5), 372-375, https://doi.org/10.1038/NGEO1778 Antarctica west DEPTH ice/snow ICEDRILL Ice drill WAIS_divide δ18O water dataset 2018 ftpangaea https://doi.org/10.1594/PANGAEA.88604610.1038/NGEO1778 2024-07-24T02:31:33Z Changes in atmospheric circulation over the past five decades have enhanced the wind-driven inflow of warm ocean water onto the Antarctic continental shelf, where it melts ice shelves from below. Atmospheric circulation changes have also caused rapid warming over the West Antarctic Ice Sheet, and contributed to declining sea-ice cover in the adjacent Amundsen-Bellingshausen seas. It is unknown whether these changes are part of a longer-term trend. Here, we use water-isotope (d18O) data from an array of ice-core records to place recent West Antarctic climate changes in the context of the past two millennia. We find that the d18O of West Antarctic precipitation has increased significantly in the past 50 years, in parallel with the trend in temperature, and was probably more elevated during the 1990s than at any other time during the past 200 years. However, d18O anomalies comparable to those of recent decades occur about 1% of the time over the past 2,000 years. General circulation model simulations suggest that recent trends in d18O and climate in West Antarctica cannot be distinguished from decadal variability that originates in the tropics. We conclude that the uncertain trajectory of tropical climate variability represents a significant source of uncertainty in projections of West Antarctic climate and ice-sheet change. Dataset Antarc* Antarctic Antarctica ice core Ice Sheet Ice Shelves Sea ice West Antarctica PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(12.086000,12.086000,-79.468000,-79.468000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Antarctica west DEPTH ice/snow ICEDRILL Ice drill WAIS_divide δ18O water |
spellingShingle |
Antarctica west DEPTH ice/snow ICEDRILL Ice drill WAIS_divide δ18O water Steig, Eric J Ding, Quinghua White, James W C Küttel, Meinrad Rupper, Summer B Neumann, T A Neff, Peter D Gallant, Ailie J E Mayewski, Paul Andrew Taylor, Kendrick C Hoffmann, Georg Dixon, Daniel A Schoenemann, Spruce W Markle, Bradley R Fudge, Tyler J Schneider, David P Schauer, Andrew J Teel, Rebecca P Vaughn, Bruce H Burgener, Landon Williams, Jessica Korotkikh, Elena Gkinis, Vasileios Water stable isotope record of ice core WAIS divide |
topic_facet |
Antarctica west DEPTH ice/snow ICEDRILL Ice drill WAIS_divide δ18O water |
description |
Changes in atmospheric circulation over the past five decades have enhanced the wind-driven inflow of warm ocean water onto the Antarctic continental shelf, where it melts ice shelves from below. Atmospheric circulation changes have also caused rapid warming over the West Antarctic Ice Sheet, and contributed to declining sea-ice cover in the adjacent Amundsen-Bellingshausen seas. It is unknown whether these changes are part of a longer-term trend. Here, we use water-isotope (d18O) data from an array of ice-core records to place recent West Antarctic climate changes in the context of the past two millennia. We find that the d18O of West Antarctic precipitation has increased significantly in the past 50 years, in parallel with the trend in temperature, and was probably more elevated during the 1990s than at any other time during the past 200 years. However, d18O anomalies comparable to those of recent decades occur about 1% of the time over the past 2,000 years. General circulation model simulations suggest that recent trends in d18O and climate in West Antarctica cannot be distinguished from decadal variability that originates in the tropics. We conclude that the uncertain trajectory of tropical climate variability represents a significant source of uncertainty in projections of West Antarctic climate and ice-sheet change. |
format |
Dataset |
author |
Steig, Eric J Ding, Quinghua White, James W C Küttel, Meinrad Rupper, Summer B Neumann, T A Neff, Peter D Gallant, Ailie J E Mayewski, Paul Andrew Taylor, Kendrick C Hoffmann, Georg Dixon, Daniel A Schoenemann, Spruce W Markle, Bradley R Fudge, Tyler J Schneider, David P Schauer, Andrew J Teel, Rebecca P Vaughn, Bruce H Burgener, Landon Williams, Jessica Korotkikh, Elena Gkinis, Vasileios |
author_facet |
Steig, Eric J Ding, Quinghua White, James W C Küttel, Meinrad Rupper, Summer B Neumann, T A Neff, Peter D Gallant, Ailie J E Mayewski, Paul Andrew Taylor, Kendrick C Hoffmann, Georg Dixon, Daniel A Schoenemann, Spruce W Markle, Bradley R Fudge, Tyler J Schneider, David P Schauer, Andrew J Teel, Rebecca P Vaughn, Bruce H Burgener, Landon Williams, Jessica Korotkikh, Elena Gkinis, Vasileios |
author_sort |
Steig, Eric J |
title |
Water stable isotope record of ice core WAIS divide |
title_short |
Water stable isotope record of ice core WAIS divide |
title_full |
Water stable isotope record of ice core WAIS divide |
title_fullStr |
Water stable isotope record of ice core WAIS divide |
title_full_unstemmed |
Water stable isotope record of ice core WAIS divide |
title_sort |
water stable isotope record of ice core wais divide |
publisher |
PANGAEA |
publishDate |
2018 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.886046 https://doi.org/10.1594/PANGAEA.886046 |
op_coverage |
LATITUDE: -79.468000 * LONGITUDE: 12.086000 * MINIMUM DEPTH, ice/snow: 120.00 m * MAXIMUM DEPTH, ice/snow: 150.00 m |
long_lat |
ENVELOPE(12.086000,12.086000,-79.468000,-79.468000) |
genre |
Antarc* Antarctic Antarctica ice core Ice Sheet Ice Shelves Sea ice West Antarctica |
genre_facet |
Antarc* Antarctic Antarctica ice core Ice Sheet Ice Shelves Sea ice West Antarctica |
op_source |
Supplement to: Steig, Eric J; Ding, Quinghua; White, James W C; Küttel, Meinrad; Rupper, Summer B; Neumann, T A; Neff, Peter D; Gallant, Ailie J E; Mayewski, Paul Andrew; Taylor, Kendrick C; Hoffmann, Georg; Dixon, Daniel A; Schoenemann, Spruce W; Markle, Bradley R; Fudge, Tyler J; Schneider, David P; Schauer, Andrew J; Teel, Rebecca P; Vaughn, Bruce H; Burgener, Landon; Williams, Jessica; Korotkikh, Elena (2013): Recent climate and ice-sheet changes in West Antarctica compared with the past 2,000 years. Nature Geoscience, 6(5), 372-375, https://doi.org/10.1038/NGEO1778 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.886046 https://doi.org/10.1594/PANGAEA.886046 |
op_rights |
CC-BY-NC-ND-3.0: Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.88604610.1038/NGEO1778 |
_version_ |
1810288849398530048 |