Tracing winter temperatures over the last two millennia using a north-east Atlantic coastal record
We present 2500 years of reconstructed bottom water temperatures (BWT) using a fjord sediment archive from the north-east Atlantic region. The BWT represent winter conditions due to the fjord hydrography and the associated timing and frequency of bottom water renewals. The study is based on a ca. 8...
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ftdoajarticles:oai:doaj.org/article:9d6768c9ed884ead8494a4b8c058913e 2023-05-15T17:38:19+02:00 Tracing winter temperatures over the last two millennia using a north-east Atlantic coastal record I. Polovodova Asteman H. L. Filipsson K. Nordberg 2018-07-01T00:00:00Z https://doi.org/10.5194/cp-14-1097-2018 https://doaj.org/article/9d6768c9ed884ead8494a4b8c058913e EN eng Copernicus Publications https://www.clim-past.net/14/1097/2018/cp-14-1097-2018.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-14-1097-2018 1814-9324 1814-9332 https://doaj.org/article/9d6768c9ed884ead8494a4b8c058913e Climate of the Past, Vol 14, Pp 1097-1118 (2018) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2018 ftdoajarticles https://doi.org/10.5194/cp-14-1097-2018 2022-12-31T14:28:05Z We present 2500 years of reconstructed bottom water temperatures (BWT) using a fjord sediment archive from the north-east Atlantic region. The BWT represent winter conditions due to the fjord hydrography and the associated timing and frequency of bottom water renewals. The study is based on a ca. 8 m long sediment core from Gullmar Fjord (Sweden), which was dated by 210 Pb and AMS 14 C and analysed for stable oxygen isotopes ( δ 18 O) measured on shallow infaunal benthic foraminiferal species Cassidulina laevigata d'Orbigny 1826. The BWT, calculated using the palaeotemperature equation from McCorkle et al. (1997), range between 2.7 and 7.8 °C and are within the annual temperature variability that has been instrumentally recorded in the deep fjord basin since the 1890s. The record demonstrates a warming during the Roman Warm Period ( ∼ 350 BCE–450 CE), variable BWT during the Dark Ages ( ∼ 450–850 CE), positive BWT anomalies during the Viking Age/Medieval Climate Anomaly ( ∼ 850–1350 CE) and a long-term cooling with distinct multidecadal variability during the Little Ice Age ( ∼ 1350–1850 CE). The fjord BWT record also picks up the contemporary warming of the 20th century (presented here until 1996), which does not stand out in the 2500-year perspective and is of the same magnitude as the Roman Warm Period and the Medieval Climate Anomaly. Article in Journal/Newspaper North East Atlantic Directory of Open Access Journals: DOAJ Articles Climate of the Past 14 7 1097 1118 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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language |
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topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 I. Polovodova Asteman H. L. Filipsson K. Nordberg Tracing winter temperatures over the last two millennia using a north-east Atlantic coastal record |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
We present 2500 years of reconstructed bottom water temperatures (BWT) using a fjord sediment archive from the north-east Atlantic region. The BWT represent winter conditions due to the fjord hydrography and the associated timing and frequency of bottom water renewals. The study is based on a ca. 8 m long sediment core from Gullmar Fjord (Sweden), which was dated by 210 Pb and AMS 14 C and analysed for stable oxygen isotopes ( δ 18 O) measured on shallow infaunal benthic foraminiferal species Cassidulina laevigata d'Orbigny 1826. The BWT, calculated using the palaeotemperature equation from McCorkle et al. (1997), range between 2.7 and 7.8 °C and are within the annual temperature variability that has been instrumentally recorded in the deep fjord basin since the 1890s. The record demonstrates a warming during the Roman Warm Period ( ∼ 350 BCE–450 CE), variable BWT during the Dark Ages ( ∼ 450–850 CE), positive BWT anomalies during the Viking Age/Medieval Climate Anomaly ( ∼ 850–1350 CE) and a long-term cooling with distinct multidecadal variability during the Little Ice Age ( ∼ 1350–1850 CE). The fjord BWT record also picks up the contemporary warming of the 20th century (presented here until 1996), which does not stand out in the 2500-year perspective and is of the same magnitude as the Roman Warm Period and the Medieval Climate Anomaly. |
format |
Article in Journal/Newspaper |
author |
I. Polovodova Asteman H. L. Filipsson K. Nordberg |
author_facet |
I. Polovodova Asteman H. L. Filipsson K. Nordberg |
author_sort |
I. Polovodova Asteman |
title |
Tracing winter temperatures over the last two millennia using a north-east Atlantic coastal record |
title_short |
Tracing winter temperatures over the last two millennia using a north-east Atlantic coastal record |
title_full |
Tracing winter temperatures over the last two millennia using a north-east Atlantic coastal record |
title_fullStr |
Tracing winter temperatures over the last two millennia using a north-east Atlantic coastal record |
title_full_unstemmed |
Tracing winter temperatures over the last two millennia using a north-east Atlantic coastal record |
title_sort |
tracing winter temperatures over the last two millennia using a north-east atlantic coastal record |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/cp-14-1097-2018 https://doaj.org/article/9d6768c9ed884ead8494a4b8c058913e |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_source |
Climate of the Past, Vol 14, Pp 1097-1118 (2018) |
op_relation |
https://www.clim-past.net/14/1097/2018/cp-14-1097-2018.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-14-1097-2018 1814-9324 1814-9332 https://doaj.org/article/9d6768c9ed884ead8494a4b8c058913e |
op_doi |
https://doi.org/10.5194/cp-14-1097-2018 |
container_title |
Climate of the Past |
container_volume |
14 |
container_issue |
7 |
container_start_page |
1097 |
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1118 |
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1766138720963002368 |