Lagged atmospheric circulation response in the Black Sea region to Greenland Interstadial 10
Northern Hemispheric high-latitude climate variations during the last glacial are expected to propagate globally in a complex way. Investigating the evolution of these variations requires a precise synchronization of the considered environmental archives. Aligning the globally common production rate...
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ftpubmed:oai:pubmedcentral.nih.gov:7682583 2023-05-15T16:26:17+02:00 Lagged atmospheric circulation response in the Black Sea region to Greenland Interstadial 10 Czymzik, Markus Nowaczyk, Norbert R. Dellwig, Olaf Wegwerth, Antje Muscheler, Raimund Christl, Marcus Arz, Helge W. 2020-11-17 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7682583/ http://www.ncbi.nlm.nih.gov/pubmed/33139546 https://doi.org/10.1073/pnas.2005520117 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7682583/ http://www.ncbi.nlm.nih.gov/pubmed/33139546 http://dx.doi.org/10.1073/pnas.2005520117 https://www.pnas.org/site/aboutpnas/licenses.xhtmlPublished under the PNAS license (https://www.pnas.org/site/aboutpnas/licenses.xhtml) . Proc Natl Acad Sci U S A Physical Sciences Text 2020 ftpubmed https://doi.org/10.1073/pnas.2005520117 2021-05-09T00:21:21Z Northern Hemispheric high-latitude climate variations during the last glacial are expected to propagate globally in a complex way. Investigating the evolution of these variations requires a precise synchronization of the considered environmental archives. Aligning the globally common production rate variations of the cosmogenic radionuclide (10)Be in different archives provides a tool for such synchronizations. Here, we present a (10)Be record at <40-y resolution along with subdecadal proxy records from one Black Sea sediment core around Greenland Interstadial 10 (GI-10) ∼41 ka BP and the Laschamp geomagnetic excursion. We synchronized our (10)Be record to that from Greenland ice cores based on its globally common production rate variations. The synchronized environmental proxy records reveal a bipartite climate response in the Black Sea region at the onset of GI-10. First, in phase with Greenland warming, reduced sedimentary coastal ice rafted detritus contents indicate less severe winters. Second, and with a lag of 190 (± 44) y, an increase in the detrital K/Ti ratio and authigenic Ca precipitation point to enhanced regional precipitation and warmer lake surface temperatures. We explain the lagged climatic response by a shift in the dominant mode of atmospheric circulation, likely connected with a time-transgressive adjustment of the regional thermal ocean interior to interstadial conditions. Text Greenland Greenland ice cores PubMed Central (PMC) Greenland Proceedings of the National Academy of Sciences 117 46 28649 28654 |
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PubMed Central (PMC) |
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English |
topic |
Physical Sciences |
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Physical Sciences Czymzik, Markus Nowaczyk, Norbert R. Dellwig, Olaf Wegwerth, Antje Muscheler, Raimund Christl, Marcus Arz, Helge W. Lagged atmospheric circulation response in the Black Sea region to Greenland Interstadial 10 |
topic_facet |
Physical Sciences |
description |
Northern Hemispheric high-latitude climate variations during the last glacial are expected to propagate globally in a complex way. Investigating the evolution of these variations requires a precise synchronization of the considered environmental archives. Aligning the globally common production rate variations of the cosmogenic radionuclide (10)Be in different archives provides a tool for such synchronizations. Here, we present a (10)Be record at <40-y resolution along with subdecadal proxy records from one Black Sea sediment core around Greenland Interstadial 10 (GI-10) ∼41 ka BP and the Laschamp geomagnetic excursion. We synchronized our (10)Be record to that from Greenland ice cores based on its globally common production rate variations. The synchronized environmental proxy records reveal a bipartite climate response in the Black Sea region at the onset of GI-10. First, in phase with Greenland warming, reduced sedimentary coastal ice rafted detritus contents indicate less severe winters. Second, and with a lag of 190 (± 44) y, an increase in the detrital K/Ti ratio and authigenic Ca precipitation point to enhanced regional precipitation and warmer lake surface temperatures. We explain the lagged climatic response by a shift in the dominant mode of atmospheric circulation, likely connected with a time-transgressive adjustment of the regional thermal ocean interior to interstadial conditions. |
format |
Text |
author |
Czymzik, Markus Nowaczyk, Norbert R. Dellwig, Olaf Wegwerth, Antje Muscheler, Raimund Christl, Marcus Arz, Helge W. |
author_facet |
Czymzik, Markus Nowaczyk, Norbert R. Dellwig, Olaf Wegwerth, Antje Muscheler, Raimund Christl, Marcus Arz, Helge W. |
author_sort |
Czymzik, Markus |
title |
Lagged atmospheric circulation response in the Black Sea region to Greenland Interstadial 10 |
title_short |
Lagged atmospheric circulation response in the Black Sea region to Greenland Interstadial 10 |
title_full |
Lagged atmospheric circulation response in the Black Sea region to Greenland Interstadial 10 |
title_fullStr |
Lagged atmospheric circulation response in the Black Sea region to Greenland Interstadial 10 |
title_full_unstemmed |
Lagged atmospheric circulation response in the Black Sea region to Greenland Interstadial 10 |
title_sort |
lagged atmospheric circulation response in the black sea region to greenland interstadial 10 |
publisher |
National Academy of Sciences |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7682583/ http://www.ncbi.nlm.nih.gov/pubmed/33139546 https://doi.org/10.1073/pnas.2005520117 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice cores |
genre_facet |
Greenland Greenland ice cores |
op_source |
Proc Natl Acad Sci U S A |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7682583/ http://www.ncbi.nlm.nih.gov/pubmed/33139546 http://dx.doi.org/10.1073/pnas.2005520117 |
op_rights |
https://www.pnas.org/site/aboutpnas/licenses.xhtmlPublished under the PNAS license (https://www.pnas.org/site/aboutpnas/licenses.xhtml) . |
op_doi |
https://doi.org/10.1073/pnas.2005520117 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
117 |
container_issue |
46 |
container_start_page |
28649 |
op_container_end_page |
28654 |
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1766015182113341440 |