Climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from Ireland
A 1000 year long subdecadal-resolution record of carbonate oxygen isotopes (δ18Oc) from Lough-na-Shade, Ireland, provides evidence for changing atmospheric circulation over northwest Europe. The total range of δ18Oc values (>5‰) is too large to be explained by changes in water temperature. Moreov...
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ftnerc:oai:nora.nerc.ac.uk:12843 2023-05-15T17:33:04+02:00 Climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from Ireland Holmes, Jonathan Arrowsmith, Carol Austin, William Boyle, John Fisher, Elizabeth Holme, R. Marshall, Jim Oldfield, Frank van der Post, Kuno 2010 http://nora.nerc.ac.uk/id/eprint/12843/ http://hol.sagepub.com/content/20/7.toc unknown Sage Holmes, Jonathan; Arrowsmith, Carol; Austin, William; Boyle, John; Fisher, Elizabeth; Holme, R.; Marshall, Jim; Oldfield, Frank; van der Post, Kuno. 2010 Climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from Ireland. The Holocene, 20 (7). 1105-1111. https://doi.org/10.1177/0959683610369504 <https://doi.org/10.1177/0959683610369504> Publication - Article PeerReviewed 2010 ftnerc https://doi.org/10.1177/0959683610369504 2023-02-04T19:28:13Z A 1000 year long subdecadal-resolution record of carbonate oxygen isotopes (δ18Oc) from Lough-na-Shade, Ireland, provides evidence for changing atmospheric circulation over northwest Europe. The total range of δ18Oc values (>5‰) is too large to be explained by changes in water temperature. Moreover, good correlation between the lake record and a previously published δ18O time series from an Irish speleothem indicates that the changes in oxygen isotopes are best explained by variations in the isotopic composition of precipitation. The amplitude of change during this period is too large to be explained by shifts in condensation temperature. Instead we suggest that there have been changes in vapour source and transport paths connected with shifts in atmospheric circulation. Changes from a source area from further south within the North Atlantic to one further to the north could explain the prominent positive shift in oxygen-isotope values between the early eighteenth and early nineteenth centuries, for example. Our results also demonstrate the value of a ‘multiple-archive’ approach to deconvolving lake-based carbonate isotope profiles, which are often complex. Article in Journal/Newspaper North Atlantic Natural Environment Research Council: NERC Open Research Archive The Holocene 20 7 1105 1111 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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unknown |
description |
A 1000 year long subdecadal-resolution record of carbonate oxygen isotopes (δ18Oc) from Lough-na-Shade, Ireland, provides evidence for changing atmospheric circulation over northwest Europe. The total range of δ18Oc values (>5‰) is too large to be explained by changes in water temperature. Moreover, good correlation between the lake record and a previously published δ18O time series from an Irish speleothem indicates that the changes in oxygen isotopes are best explained by variations in the isotopic composition of precipitation. The amplitude of change during this period is too large to be explained by shifts in condensation temperature. Instead we suggest that there have been changes in vapour source and transport paths connected with shifts in atmospheric circulation. Changes from a source area from further south within the North Atlantic to one further to the north could explain the prominent positive shift in oxygen-isotope values between the early eighteenth and early nineteenth centuries, for example. Our results also demonstrate the value of a ‘multiple-archive’ approach to deconvolving lake-based carbonate isotope profiles, which are often complex. |
format |
Article in Journal/Newspaper |
author |
Holmes, Jonathan Arrowsmith, Carol Austin, William Boyle, John Fisher, Elizabeth Holme, R. Marshall, Jim Oldfield, Frank van der Post, Kuno |
spellingShingle |
Holmes, Jonathan Arrowsmith, Carol Austin, William Boyle, John Fisher, Elizabeth Holme, R. Marshall, Jim Oldfield, Frank van der Post, Kuno Climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from Ireland |
author_facet |
Holmes, Jonathan Arrowsmith, Carol Austin, William Boyle, John Fisher, Elizabeth Holme, R. Marshall, Jim Oldfield, Frank van der Post, Kuno |
author_sort |
Holmes, Jonathan |
title |
Climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from Ireland |
title_short |
Climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from Ireland |
title_full |
Climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from Ireland |
title_fullStr |
Climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from Ireland |
title_full_unstemmed |
Climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from Ireland |
title_sort |
climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from ireland |
publisher |
Sage |
publishDate |
2010 |
url |
http://nora.nerc.ac.uk/id/eprint/12843/ http://hol.sagepub.com/content/20/7.toc |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Holmes, Jonathan; Arrowsmith, Carol; Austin, William; Boyle, John; Fisher, Elizabeth; Holme, R.; Marshall, Jim; Oldfield, Frank; van der Post, Kuno. 2010 Climate and atmospheric circulation changes over the past 1000 years reconstructed from oxygen isotopes in lake-sediment carbonate from Ireland. The Holocene, 20 (7). 1105-1111. https://doi.org/10.1177/0959683610369504 <https://doi.org/10.1177/0959683610369504> |
op_doi |
https://doi.org/10.1177/0959683610369504 |
container_title |
The Holocene |
container_volume |
20 |
container_issue |
7 |
container_start_page |
1105 |
op_container_end_page |
1111 |
_version_ |
1766131452644163584 |