Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records
Millennial-scale palaeoclimate variability has been documented in various terrestrial and marine palaeoclimate proxy records throughout the Northern Hemisphere for the last glacial cycle. Its clear expression and rapid shifts between different states of climate (Greenland Interstadials and Stadials)...
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ftleibnizopen:oai:oai.leibnizopen.de:V1u78IgBdbrxVwz6XZbt 2023-07-16T03:58:41+02:00 Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records Zeeden, Christian Obreht, Igor Veres, Daniel Kaboth-Bahr, Stefanie Hošek, Jan Marković, Slobodan B. Bösken, Janina Lehmkuhl, Frank Rolf, Christian Hambach, Ulrich 2020 application/pdf https://oa.tib.eu/renate/handle/123456789/10523 https://doi.org/10.34657/9559 eng eng [London] : Macmillan Publishers Limited, part of Springer Nature CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ Scientific Reports 10 (2020) last glacial period western interior basin high-resolution record 500 600 article Text 2020 ftleibnizopen https://doi.org/10.34657/9559 2023-06-25T23:34:39Z Millennial-scale palaeoclimate variability has been documented in various terrestrial and marine palaeoclimate proxy records throughout the Northern Hemisphere for the last glacial cycle. Its clear expression and rapid shifts between different states of climate (Greenland Interstadials and Stadials) represents a correlation tool beyond the resolution of e.g. luminescence dating, especially relevant for terrestrial deposits. Usually, comparison of terrestrial proxy datasets and the Greenland ice cores indicates a complex expression of millennial-scale climate variability as recorded in terrestrial geoarchives including loess. Loess is the most widespread terrestrial geoarchive of the Quaternary and especially widespread over Eurasia. However, loess often records a smoothed representation of millennial-scale variability without all fidelity when compared to the Greenland data, this being a relevant limiting feature in integrating loess with other palaeoclimate records. To better understand the loess proxy-response to millennial-scale climate variability, we simulate a proxy signal smoothing by natural processes through application of low-pass filters of δ18O data from Greenland, a high-resolution palaeoclimate reference record, alongside speleothem isotope records from the Black Sea-Mediterranean region. We show that low-pass filters represent rather simple models for better constraining the expression of millennial-scale climate variability in low sedimentation environments, and in sediments where proxy-response signals are most likely affected by natural smoothing (by e.g. bioturbation). Interestingly, smoothed datasets from Greenland and the Black Sea-Mediterranean region are most similar in the last ~15 ka and between ~50–30 ka. Between ~30–15 ka, roughly corresponding to the Last Glacial Maximum and the deglaciation, the records show dissimilarities, challenging the construction of robust correlative time-scales in this age range. From our analysis it becomes apparent that patterns of palaeoclimate signals in ... Article in Journal/Newspaper Greenland Greenland ice cores LeibnizOpen (The Leibniz Association) Greenland |
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Open Polar |
collection |
LeibnizOpen (The Leibniz Association) |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
last glacial period western interior basin high-resolution record 500 600 |
spellingShingle |
last glacial period western interior basin high-resolution record 500 600 Zeeden, Christian Obreht, Igor Veres, Daniel Kaboth-Bahr, Stefanie Hošek, Jan Marković, Slobodan B. Bösken, Janina Lehmkuhl, Frank Rolf, Christian Hambach, Ulrich Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
topic_facet |
last glacial period western interior basin high-resolution record 500 600 |
description |
Millennial-scale palaeoclimate variability has been documented in various terrestrial and marine palaeoclimate proxy records throughout the Northern Hemisphere for the last glacial cycle. Its clear expression and rapid shifts between different states of climate (Greenland Interstadials and Stadials) represents a correlation tool beyond the resolution of e.g. luminescence dating, especially relevant for terrestrial deposits. Usually, comparison of terrestrial proxy datasets and the Greenland ice cores indicates a complex expression of millennial-scale climate variability as recorded in terrestrial geoarchives including loess. Loess is the most widespread terrestrial geoarchive of the Quaternary and especially widespread over Eurasia. However, loess often records a smoothed representation of millennial-scale variability without all fidelity when compared to the Greenland data, this being a relevant limiting feature in integrating loess with other palaeoclimate records. To better understand the loess proxy-response to millennial-scale climate variability, we simulate a proxy signal smoothing by natural processes through application of low-pass filters of δ18O data from Greenland, a high-resolution palaeoclimate reference record, alongside speleothem isotope records from the Black Sea-Mediterranean region. We show that low-pass filters represent rather simple models for better constraining the expression of millennial-scale climate variability in low sedimentation environments, and in sediments where proxy-response signals are most likely affected by natural smoothing (by e.g. bioturbation). Interestingly, smoothed datasets from Greenland and the Black Sea-Mediterranean region are most similar in the last ~15 ka and between ~50–30 ka. Between ~30–15 ka, roughly corresponding to the Last Glacial Maximum and the deglaciation, the records show dissimilarities, challenging the construction of robust correlative time-scales in this age range. From our analysis it becomes apparent that patterns of palaeoclimate signals in ... |
format |
Article in Journal/Newspaper |
author |
Zeeden, Christian Obreht, Igor Veres, Daniel Kaboth-Bahr, Stefanie Hošek, Jan Marković, Slobodan B. Bösken, Janina Lehmkuhl, Frank Rolf, Christian Hambach, Ulrich |
author_facet |
Zeeden, Christian Obreht, Igor Veres, Daniel Kaboth-Bahr, Stefanie Hošek, Jan Marković, Slobodan B. Bösken, Janina Lehmkuhl, Frank Rolf, Christian Hambach, Ulrich |
author_sort |
Zeeden, Christian |
title |
Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
title_short |
Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
title_full |
Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
title_fullStr |
Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
title_full_unstemmed |
Smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: Application to European loess records |
title_sort |
smoothed millennial-scale palaeoclimatic reference data as unconventional comparison targets: application to european loess records |
publisher |
[London] : Macmillan Publishers Limited, part of Springer Nature |
publishDate |
2020 |
url |
https://oa.tib.eu/renate/handle/123456789/10523 https://doi.org/10.34657/9559 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores |
genre_facet |
Greenland Greenland ice cores |
op_source |
Scientific Reports 10 (2020) |
op_rights |
CC BY 4.0 Unported https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.34657/9559 |
_version_ |
1771545928625291264 |