Testing the consistency of Holocene and Last Glacial Maximum spatial correlations in temperature proxy records
Holocene temperature proxy records are commonly used in quantitative synthesis and model-data comparisons. However, comparing correlations between time series from records collected in proximity to one another with the expected correlations based on climate model simulations indicates either regiona...
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ftdatacite:10.23689/fidgeo-5067 2023-05-15T16:39:12+02:00 Testing the consistency of Holocene and Last Glacial Maximum spatial correlations in temperature proxy records Reschke, Maria Kröner, Igor Laepple, Thomas 2020 https://dx.doi.org/10.23689/fidgeo-5067 https://e-docs.geo-leo.de/handle/11858/9413 en eng FID GEO Text Article article-journal ScholarlyArticle 2020 ftdatacite https://doi.org/10.23689/fidgeo-5067 2021-11-05T12:55:41Z Holocene temperature proxy records are commonly used in quantitative synthesis and model-data comparisons. However, comparing correlations between time series from records collected in proximity to one another with the expected correlations based on climate model simulations indicates either regional or noisy climate signals in Holocene temperature proxy records. In this study, we evaluate the consistency of spatial correlations present in Holocene proxy records with those found in data from the Last Glacial Maximum (LGM). Specifically, we predict correlations expected in LGM proxy records if the only difference to Holocene correlations would be due to more time uncertainty and more climate variability in the LGM. We compare this simple prediction to the actual correlation structure in the LGM proxy records. We found that time series data of ice-core stable isotope records and planktonic foraminifera Mg/Ca ratios were consistent between the Holocene and LGM periods, while time series of Uk'37 proxy records were not as we found no correlation between nearby LGM records. Our results support the finding of highly regional or noisy marine proxy records in the compilation analysed here and suggest the need for further studies on the role of climate proxies and the processes of climate signal recording and preservation. Text ice core Planktonic foraminifera DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
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English |
description |
Holocene temperature proxy records are commonly used in quantitative synthesis and model-data comparisons. However, comparing correlations between time series from records collected in proximity to one another with the expected correlations based on climate model simulations indicates either regional or noisy climate signals in Holocene temperature proxy records. In this study, we evaluate the consistency of spatial correlations present in Holocene proxy records with those found in data from the Last Glacial Maximum (LGM). Specifically, we predict correlations expected in LGM proxy records if the only difference to Holocene correlations would be due to more time uncertainty and more climate variability in the LGM. We compare this simple prediction to the actual correlation structure in the LGM proxy records. We found that time series data of ice-core stable isotope records and planktonic foraminifera Mg/Ca ratios were consistent between the Holocene and LGM periods, while time series of Uk'37 proxy records were not as we found no correlation between nearby LGM records. Our results support the finding of highly regional or noisy marine proxy records in the compilation analysed here and suggest the need for further studies on the role of climate proxies and the processes of climate signal recording and preservation. |
format |
Text |
author |
Reschke, Maria Kröner, Igor Laepple, Thomas |
spellingShingle |
Reschke, Maria Kröner, Igor Laepple, Thomas Testing the consistency of Holocene and Last Glacial Maximum spatial correlations in temperature proxy records |
author_facet |
Reschke, Maria Kröner, Igor Laepple, Thomas |
author_sort |
Reschke, Maria |
title |
Testing the consistency of Holocene and Last Glacial Maximum spatial correlations in temperature proxy records |
title_short |
Testing the consistency of Holocene and Last Glacial Maximum spatial correlations in temperature proxy records |
title_full |
Testing the consistency of Holocene and Last Glacial Maximum spatial correlations in temperature proxy records |
title_fullStr |
Testing the consistency of Holocene and Last Glacial Maximum spatial correlations in temperature proxy records |
title_full_unstemmed |
Testing the consistency of Holocene and Last Glacial Maximum spatial correlations in temperature proxy records |
title_sort |
testing the consistency of holocene and last glacial maximum spatial correlations in temperature proxy records |
publisher |
FID GEO |
publishDate |
2020 |
url |
https://dx.doi.org/10.23689/fidgeo-5067 https://e-docs.geo-leo.de/handle/11858/9413 |
genre |
ice core Planktonic foraminifera |
genre_facet |
ice core Planktonic foraminifera |
op_doi |
https://doi.org/10.23689/fidgeo-5067 |
_version_ |
1766029528690327552 |