Mid-Holocene reinforcement of North Atlantic atmospheric circulation variability from a western Baltic lake sediment record
Knowledge about the timing, amplitude and spatial gradients of Holocene environmental variability in the circum-Baltic region is key to understanding its responses to ongoing climate change. Based on a multi-dating and proxy approach, we reconstruct changes in productivity using total organic carbon...
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Copernicus Publications
2023
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Online Access: | https://doi.org/10.5194/cp-19-233-2023 https://doaj.org/article/be2daf0be7d144df9e3e9c135174afc5 |
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ftdoajarticles:oai:doaj.org/article:be2daf0be7d144df9e3e9c135174afc5 2023-05-15T17:31:56+02:00 Mid-Holocene reinforcement of North Atlantic atmospheric circulation variability from a western Baltic lake sediment record M. Czymzik R. Tjallingii B. Plessen P. Feldens M. Theuerkauf M. Moros M. J. Schwab C. K. M. Nantke S. Pinkerneil A. Brauer H. W. Arz 2023-01-01T00:00:00Z https://doi.org/10.5194/cp-19-233-2023 https://doaj.org/article/be2daf0be7d144df9e3e9c135174afc5 EN eng Copernicus Publications https://cp.copernicus.org/articles/19/233/2023/cp-19-233-2023.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-19-233-2023 1814-9324 1814-9332 https://doaj.org/article/be2daf0be7d144df9e3e9c135174afc5 Climate of the Past, Vol 19, Pp 233-248 (2023) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2023 ftdoajarticles https://doi.org/10.5194/cp-19-233-2023 2023-01-29T01:27:42Z Knowledge about the timing, amplitude and spatial gradients of Holocene environmental variability in the circum-Baltic region is key to understanding its responses to ongoing climate change. Based on a multi-dating and proxy approach, we reconstruct changes in productivity using total organic carbon (TOC) contents in sediments of Lake Kälksjön (KKJ) from west–central Sweden spanning the last 9612 ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>+</mo><mn mathvariant="normal">255</mn><mo>/</mo><mo>-</mo><mn mathvariant="normal">114</mn></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="64pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="a3653381b53c4bc26b401e0834f2e355"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cp-19-233-2023-ie00001.svg" width="64pt" height="14pt" src="cp-19-233-2023-ie00001.png"/></svg:svg> ) years. An exception is the period from 1878 CE until today, in which sedimentation was dominated by anthropogenic lake level lowering and land use. In-lake productivity was higher during periods of warmer winters with shortened ice cover and prolonged growing seasons. A multi-millennial increase in productivity throughout the last ∼ 9600 years is associated with progressively warmer winters in northwestern Europe, likely triggered by the coinciding increase in Northern Hemisphere winter insolation. Decadal to centennial periods of higher productivity in KKJ tend to correspond to warmer winters during a more positive North Atlantic Oscillation (NAO) polarity, as reconstructed for the last 8000 years. In consequence, we assume our decadal to centennial productivity record from KKJ sediments for the complete ∼ 9600 years to provide a qualitative record of NAO polarity. A shift towards higher productivity variability at ∼ 5450 cal a BP is hypothesized to reflect a reinforcement of ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Climate of the Past 19 1 233 248 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
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Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 M. Czymzik R. Tjallingii B. Plessen P. Feldens M. Theuerkauf M. Moros M. J. Schwab C. K. M. Nantke S. Pinkerneil A. Brauer H. W. Arz Mid-Holocene reinforcement of North Atlantic atmospheric circulation variability from a western Baltic lake sediment record |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
Knowledge about the timing, amplitude and spatial gradients of Holocene environmental variability in the circum-Baltic region is key to understanding its responses to ongoing climate change. Based on a multi-dating and proxy approach, we reconstruct changes in productivity using total organic carbon (TOC) contents in sediments of Lake Kälksjön (KKJ) from west–central Sweden spanning the last 9612 ( <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1" display="inline" overflow="scroll" dspmath="mathml"><mrow><mo>+</mo><mn mathvariant="normal">255</mn><mo>/</mo><mo>-</mo><mn mathvariant="normal">114</mn></mrow></math> <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="64pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="a3653381b53c4bc26b401e0834f2e355"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="cp-19-233-2023-ie00001.svg" width="64pt" height="14pt" src="cp-19-233-2023-ie00001.png"/></svg:svg> ) years. An exception is the period from 1878 CE until today, in which sedimentation was dominated by anthropogenic lake level lowering and land use. In-lake productivity was higher during periods of warmer winters with shortened ice cover and prolonged growing seasons. A multi-millennial increase in productivity throughout the last ∼ 9600 years is associated with progressively warmer winters in northwestern Europe, likely triggered by the coinciding increase in Northern Hemisphere winter insolation. Decadal to centennial periods of higher productivity in KKJ tend to correspond to warmer winters during a more positive North Atlantic Oscillation (NAO) polarity, as reconstructed for the last 8000 years. In consequence, we assume our decadal to centennial productivity record from KKJ sediments for the complete ∼ 9600 years to provide a qualitative record of NAO polarity. A shift towards higher productivity variability at ∼ 5450 cal a BP is hypothesized to reflect a reinforcement of ... |
format |
Article in Journal/Newspaper |
author |
M. Czymzik R. Tjallingii B. Plessen P. Feldens M. Theuerkauf M. Moros M. J. Schwab C. K. M. Nantke S. Pinkerneil A. Brauer H. W. Arz |
author_facet |
M. Czymzik R. Tjallingii B. Plessen P. Feldens M. Theuerkauf M. Moros M. J. Schwab C. K. M. Nantke S. Pinkerneil A. Brauer H. W. Arz |
author_sort |
M. Czymzik |
title |
Mid-Holocene reinforcement of North Atlantic atmospheric circulation variability from a western Baltic lake sediment record |
title_short |
Mid-Holocene reinforcement of North Atlantic atmospheric circulation variability from a western Baltic lake sediment record |
title_full |
Mid-Holocene reinforcement of North Atlantic atmospheric circulation variability from a western Baltic lake sediment record |
title_fullStr |
Mid-Holocene reinforcement of North Atlantic atmospheric circulation variability from a western Baltic lake sediment record |
title_full_unstemmed |
Mid-Holocene reinforcement of North Atlantic atmospheric circulation variability from a western Baltic lake sediment record |
title_sort |
mid-holocene reinforcement of north atlantic atmospheric circulation variability from a western baltic lake sediment record |
publisher |
Copernicus Publications |
publishDate |
2023 |
url |
https://doi.org/10.5194/cp-19-233-2023 https://doaj.org/article/be2daf0be7d144df9e3e9c135174afc5 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Climate of the Past, Vol 19, Pp 233-248 (2023) |
op_relation |
https://cp.copernicus.org/articles/19/233/2023/cp-19-233-2023.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-19-233-2023 1814-9324 1814-9332 https://doaj.org/article/be2daf0be7d144df9e3e9c135174afc5 |
op_doi |
https://doi.org/10.5194/cp-19-233-2023 |
container_title |
Climate of the Past |
container_volume |
19 |
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1 |
container_start_page |
233 |
op_container_end_page |
248 |
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1766129837123043328 |