Stomatal proxy record of CO2 concentrations from the last termination suggests an important role for CO2 at climate change transitions
A new stomatal proxy-based record of CO 2 concentrations ([CO 2 ]), based on Betula nana (dwarf birch) leaves from the Hässeldala Port sedimentary sequence in south-eastern Sweden, is presented. The record is of high chronological resolution and spans most of Greenland Interstadial 1 (GI-1a to 1c, A...
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2013
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ftqueensubelpubl:oai:pure.qub.ac.uk/portal:publications/c378a0e0-8e39-40bf-97db-a5f6ab92d7cd 2024-05-12T08:01:57+00:00 Stomatal proxy record of CO2 concentrations from the last termination suggests an important role for CO2 at climate change transitions Steinthorsdottir, Margaret Wohlfarth, Barbara Kylander, Malin E. Blaauw, Maarten Reimer, Paula J. 2013-05-15 https://pure.qub.ac.uk/en/publications/c378a0e0-8e39-40bf-97db-a5f6ab92d7cd https://doi.org/10.1016/j.quascirev.2013.02.003 eng eng https://pure.qub.ac.uk/en/publications/c378a0e0-8e39-40bf-97db-a5f6ab92d7cd info:eu-repo/semantics/restrictedAccess Steinthorsdottir , M , Wohlfarth , B , Kylander , M E , Blaauw , M & Reimer , P J 2013 , ' Stomatal proxy record of CO2 concentrations from the last termination suggests an important role for CO2 at climate change transitions ' , Quaternary Science Reviews , vol. 68 , pp. 43-58 . https://doi.org/10.1016/j.quascirev.2013.02.003 /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action article 2013 ftqueensubelpubl https://doi.org/10.1016/j.quascirev.2013.02.003 2024-04-17T23:48:02Z A new stomatal proxy-based record of CO 2 concentrations ([CO 2 ]), based on Betula nana (dwarf birch) leaves from the Hässeldala Port sedimentary sequence in south-eastern Sweden, is presented. The record is of high chronological resolution and spans most of Greenland Interstadial 1 (GI-1a to 1c, Allerød pollen zone), Greenland Stadial 1 (GS-1, Younger Dryas pollen zone) and the very beginning of the Holocene (Preboreal pollen zone). The record clearly demonstrates that i) [CO 2 ] were significantly higher than usually reported for the Last Termination and ii) the overall pattern of CO 2 evolution through the studied time period is fairly dynamic, with significant abrupt fluctuations in [CO 2 ] when the climate moved from interstadial to stadial state and vice versa. A new loss-on-ignition chemical record (used here as a proxy for temperature) lends independent support to the Hässeldala Port [CO 2 ] record. The large-amplitude fluctuations around the climate change transitions may indicate unstable climates and that " tipping-point" situations were involved in Last Termination climate evolution. The scenario presented here is in contrast to [CO 2 ] records reconstructed from air bubbles trapped in ice, which indicate lower concentrations and a gradual, linear increase of [CO 2 ] through time. The prevalent explanation for the main climate forcer during the Last Termination being ocean circulation patterns needs to re-examined, and a larger role for atmospheric [CO 2 ] considered. Article in Journal/Newspaper Betula nana Dwarf birch Greenland Queen's University Belfast Research Portal Greenland Quaternary Science Reviews 68 43 58 |
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Open Polar |
collection |
Queen's University Belfast Research Portal |
op_collection_id |
ftqueensubelpubl |
language |
English |
topic |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
spellingShingle |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action Steinthorsdottir, Margaret Wohlfarth, Barbara Kylander, Malin E. Blaauw, Maarten Reimer, Paula J. Stomatal proxy record of CO2 concentrations from the last termination suggests an important role for CO2 at climate change transitions |
topic_facet |
/dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action |
description |
A new stomatal proxy-based record of CO 2 concentrations ([CO 2 ]), based on Betula nana (dwarf birch) leaves from the Hässeldala Port sedimentary sequence in south-eastern Sweden, is presented. The record is of high chronological resolution and spans most of Greenland Interstadial 1 (GI-1a to 1c, Allerød pollen zone), Greenland Stadial 1 (GS-1, Younger Dryas pollen zone) and the very beginning of the Holocene (Preboreal pollen zone). The record clearly demonstrates that i) [CO 2 ] were significantly higher than usually reported for the Last Termination and ii) the overall pattern of CO 2 evolution through the studied time period is fairly dynamic, with significant abrupt fluctuations in [CO 2 ] when the climate moved from interstadial to stadial state and vice versa. A new loss-on-ignition chemical record (used here as a proxy for temperature) lends independent support to the Hässeldala Port [CO 2 ] record. The large-amplitude fluctuations around the climate change transitions may indicate unstable climates and that " tipping-point" situations were involved in Last Termination climate evolution. The scenario presented here is in contrast to [CO 2 ] records reconstructed from air bubbles trapped in ice, which indicate lower concentrations and a gradual, linear increase of [CO 2 ] through time. The prevalent explanation for the main climate forcer during the Last Termination being ocean circulation patterns needs to re-examined, and a larger role for atmospheric [CO 2 ] considered. |
format |
Article in Journal/Newspaper |
author |
Steinthorsdottir, Margaret Wohlfarth, Barbara Kylander, Malin E. Blaauw, Maarten Reimer, Paula J. |
author_facet |
Steinthorsdottir, Margaret Wohlfarth, Barbara Kylander, Malin E. Blaauw, Maarten Reimer, Paula J. |
author_sort |
Steinthorsdottir, Margaret |
title |
Stomatal proxy record of CO2 concentrations from the last termination suggests an important role for CO2 at climate change transitions |
title_short |
Stomatal proxy record of CO2 concentrations from the last termination suggests an important role for CO2 at climate change transitions |
title_full |
Stomatal proxy record of CO2 concentrations from the last termination suggests an important role for CO2 at climate change transitions |
title_fullStr |
Stomatal proxy record of CO2 concentrations from the last termination suggests an important role for CO2 at climate change transitions |
title_full_unstemmed |
Stomatal proxy record of CO2 concentrations from the last termination suggests an important role for CO2 at climate change transitions |
title_sort |
stomatal proxy record of co2 concentrations from the last termination suggests an important role for co2 at climate change transitions |
publishDate |
2013 |
url |
https://pure.qub.ac.uk/en/publications/c378a0e0-8e39-40bf-97db-a5f6ab92d7cd https://doi.org/10.1016/j.quascirev.2013.02.003 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Betula nana Dwarf birch Greenland |
genre_facet |
Betula nana Dwarf birch Greenland |
op_source |
Steinthorsdottir , M , Wohlfarth , B , Kylander , M E , Blaauw , M & Reimer , P J 2013 , ' Stomatal proxy record of CO2 concentrations from the last termination suggests an important role for CO2 at climate change transitions ' , Quaternary Science Reviews , vol. 68 , pp. 43-58 . https://doi.org/10.1016/j.quascirev.2013.02.003 |
op_relation |
https://pure.qub.ac.uk/en/publications/c378a0e0-8e39-40bf-97db-a5f6ab92d7cd |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.quascirev.2013.02.003 |
container_title |
Quaternary Science Reviews |
container_volume |
68 |
container_start_page |
43 |
op_container_end_page |
58 |
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1798844054217162752 |