Climate since AD 1510 on Dyer Plateau, Antarctic Peninsula: evidence for recent climate change
A 480 year record of the oxygen-isotope ratios, dust content, chemical species and net accumulation from ice cores drilled in 1989 90 on Dyer Plateau in the Antarctic Peninsula is presented. The continuous analyses of small (sub-annual) samples reveal well-preserved annual variations in both sulfate...
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International Glaciological Society
1994
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ftnerc:oai:nora.nerc.ac.uk:517505 2023-05-15T13:29:44+02:00 Climate since AD 1510 on Dyer Plateau, Antarctic Peninsula: evidence for recent climate change Thompson, L.G. Peel, D.A. Mosley-Thompson, E. Mulvaney, R. Dal, J. Lin, P.N. Davis, M.E. Raymond, C.F. 1994-01 http://nora.nerc.ac.uk/id/eprint/517505/ https://doi.org/10.3189/172756494794587438 unknown International Glaciological Society Thompson, L.G.; Peel, D.A.; Mosley-Thompson, E.; Mulvaney, R. orcid:0000-0002-5372-8148 Dal, J.; Lin, P.N.; Davis, M.E.; Raymond, C.F. 1994 Climate since AD 1510 on Dyer Plateau, Antarctic Peninsula: evidence for recent climate change. Annals of Glaciology, 20 (1). 420-426. https://doi.org/10.3189/172756494794587438 <https://doi.org/10.3189/172756494794587438> Publication - Article PeerReviewed 1994 ftnerc https://doi.org/10.3189/172756494794587438 2023-02-04T19:45:09Z A 480 year record of the oxygen-isotope ratios, dust content, chemical species and net accumulation from ice cores drilled in 1989 90 on Dyer Plateau in the Antarctic Peninsula is presented. The continuous analyses of small (sub-annual) samples reveal well-preserved annual variations in both sulfate content and δ18O, thus allowing an excellent time-scale to be established. This history reveals a recent pronounced warming in which the last two decades have been among the warmest in the last five centuries. Furthermore, unlike in East Antarctica, on Dyer Plateau conditions appear to have been fairly normal from AD 1500 to 1850 with cooler conditions from 1850 to 1930 and a warming trend dominating since 1930. Reconstructed annual layer thicknesses suggest an increase in net accumulation beginning early in the 19th century and continuing to the present. This intuitive conflict between increasing net accumulation and depleted δ18O (cooler climate) in the 19th century appears widespread in the peninsula region and challenges our understanding of the physical relationships among moisture sources, air temperatures and snow accumulation. The complex meteorological regime in the Antarctic Peninsula region complicates meaningful interpretation of proxy indicators and results in a strong imprint of local high-frequency processes upon the larger-scale climate picture. Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula East Antarctica Dyer ENVELOPE(-81.366,-81.366,50.550,50.550) Dyer Plateau ENVELOPE(-65.000,-65.000,-70.500,-70.500) Annals of Glaciology 20 420 426 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
A 480 year record of the oxygen-isotope ratios, dust content, chemical species and net accumulation from ice cores drilled in 1989 90 on Dyer Plateau in the Antarctic Peninsula is presented. The continuous analyses of small (sub-annual) samples reveal well-preserved annual variations in both sulfate content and δ18O, thus allowing an excellent time-scale to be established. This history reveals a recent pronounced warming in which the last two decades have been among the warmest in the last five centuries. Furthermore, unlike in East Antarctica, on Dyer Plateau conditions appear to have been fairly normal from AD 1500 to 1850 with cooler conditions from 1850 to 1930 and a warming trend dominating since 1930. Reconstructed annual layer thicknesses suggest an increase in net accumulation beginning early in the 19th century and continuing to the present. This intuitive conflict between increasing net accumulation and depleted δ18O (cooler climate) in the 19th century appears widespread in the peninsula region and challenges our understanding of the physical relationships among moisture sources, air temperatures and snow accumulation. The complex meteorological regime in the Antarctic Peninsula region complicates meaningful interpretation of proxy indicators and results in a strong imprint of local high-frequency processes upon the larger-scale climate picture. |
format |
Article in Journal/Newspaper |
author |
Thompson, L.G. Peel, D.A. Mosley-Thompson, E. Mulvaney, R. Dal, J. Lin, P.N. Davis, M.E. Raymond, C.F. |
spellingShingle |
Thompson, L.G. Peel, D.A. Mosley-Thompson, E. Mulvaney, R. Dal, J. Lin, P.N. Davis, M.E. Raymond, C.F. Climate since AD 1510 on Dyer Plateau, Antarctic Peninsula: evidence for recent climate change |
author_facet |
Thompson, L.G. Peel, D.A. Mosley-Thompson, E. Mulvaney, R. Dal, J. Lin, P.N. Davis, M.E. Raymond, C.F. |
author_sort |
Thompson, L.G. |
title |
Climate since AD 1510 on Dyer Plateau, Antarctic Peninsula: evidence for recent climate change |
title_short |
Climate since AD 1510 on Dyer Plateau, Antarctic Peninsula: evidence for recent climate change |
title_full |
Climate since AD 1510 on Dyer Plateau, Antarctic Peninsula: evidence for recent climate change |
title_fullStr |
Climate since AD 1510 on Dyer Plateau, Antarctic Peninsula: evidence for recent climate change |
title_full_unstemmed |
Climate since AD 1510 on Dyer Plateau, Antarctic Peninsula: evidence for recent climate change |
title_sort |
climate since ad 1510 on dyer plateau, antarctic peninsula: evidence for recent climate change |
publisher |
International Glaciological Society |
publishDate |
1994 |
url |
http://nora.nerc.ac.uk/id/eprint/517505/ https://doi.org/10.3189/172756494794587438 |
long_lat |
ENVELOPE(-81.366,-81.366,50.550,50.550) ENVELOPE(-65.000,-65.000,-70.500,-70.500) |
geographic |
Antarctic The Antarctic Antarctic Peninsula East Antarctica Dyer Dyer Plateau |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula East Antarctica Dyer Dyer Plateau |
genre |
Annals of Glaciology Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctic Peninsula Antarctica East Antarctica |
op_relation |
Thompson, L.G.; Peel, D.A.; Mosley-Thompson, E.; Mulvaney, R. orcid:0000-0002-5372-8148 Dal, J.; Lin, P.N.; Davis, M.E.; Raymond, C.F. 1994 Climate since AD 1510 on Dyer Plateau, Antarctic Peninsula: evidence for recent climate change. Annals of Glaciology, 20 (1). 420-426. https://doi.org/10.3189/172756494794587438 <https://doi.org/10.3189/172756494794587438> |
op_doi |
https://doi.org/10.3189/172756494794587438 |
container_title |
Annals of Glaciology |
container_volume |
20 |
container_start_page |
420 |
op_container_end_page |
426 |
_version_ |
1766002466963324928 |