Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics
<jats:title>Abstract</jats:title><jats:p>The Black Sea experienced pronounced millennial-scale changes in temperature and rainfall during the last glacial coinciding with Dansgaard-Oeschger cycles. However, little is known regarding the amount and sources of freshwater reaching thi...
Published in: | Communications Earth & Environment |
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2021
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ftleibnizopen:oai:oai.leibnizopen.de:FCaKVYsBBwLIz6xGPFR5 2023-11-12T04:18:44+01:00 Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics Wegwerth, Antje Schröder, Birgit Kleinhanns, Ilka C. Arz, Helge Wolfgang 2021 https://repository.publisso.de/resource/frl:6442456 https://doi.org/10.1038/s43247-021-00129-3 eng eng https://creativecommons.org/licenses/by/4.0/ http://lobid.org/resources/99370686607206441#!, 2(1):63 Article Palaeoclimate Atmospheric dynamics Environmental sciences Hydrology 2021 ftleibnizopen https://doi.org/10.1038/s43247-021-00129-3 2023-10-22T23:10:26Z <jats:title>Abstract</jats:title><jats:p>The Black Sea experienced pronounced millennial-scale changes in temperature and rainfall during the last glacial coinciding with Dansgaard-Oeschger cycles. However, little is known regarding the amount and sources of freshwater reaching this inland basin. Here, we present detailed ostracod δ<jats:sup>18</jats:sup>O data from the glacial Black Sea showing subdued Dansgaard-Oeschger cyclicity and four prominent longer-term saw-tooth shaped Bond-like cycles. We propose that the δ<jats:sup>18</jats:sup>O<jats:sub>ostracods</jats:sub> signature primarily reflects changes in the atmospheric circulation in response to the waxing and waning Eurasian Ice Sheet. The millennial-scale ice sheet variations likely resulted not only in latitudinal migrations of atmospheric frontal systems but also in shifts of dominant moisture sources for the Black Sea. Heavier isotopic precipitation arrived from the North Atlantic-Mediterranean realm during the warmer interstadials and lighter isotopic precipitation from the Eurasian continental interior during the colder stadials. The subdued Dansgaard-Oeschger variability likely reflects an integrated precipitation signal additionally affected by the long mixing times of the large Black Sea volume up to 1,500 years as suggested from hydrologic-isotope-balance modelling.</jats:p> Other/Unknown Material Ice Sheet North Atlantic Unknown Communications Earth & Environment 2 1 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
ftleibnizopen |
language |
English |
topic |
Article Palaeoclimate Atmospheric dynamics Environmental sciences Hydrology |
spellingShingle |
Article Palaeoclimate Atmospheric dynamics Environmental sciences Hydrology Wegwerth, Antje Schröder, Birgit Kleinhanns, Ilka C. Arz, Helge Wolfgang Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
topic_facet |
Article Palaeoclimate Atmospheric dynamics Environmental sciences Hydrology |
description |
<jats:title>Abstract</jats:title><jats:p>The Black Sea experienced pronounced millennial-scale changes in temperature and rainfall during the last glacial coinciding with Dansgaard-Oeschger cycles. However, little is known regarding the amount and sources of freshwater reaching this inland basin. Here, we present detailed ostracod δ<jats:sup>18</jats:sup>O data from the glacial Black Sea showing subdued Dansgaard-Oeschger cyclicity and four prominent longer-term saw-tooth shaped Bond-like cycles. We propose that the δ<jats:sup>18</jats:sup>O<jats:sub>ostracods</jats:sub> signature primarily reflects changes in the atmospheric circulation in response to the waxing and waning Eurasian Ice Sheet. The millennial-scale ice sheet variations likely resulted not only in latitudinal migrations of atmospheric frontal systems but also in shifts of dominant moisture sources for the Black Sea. Heavier isotopic precipitation arrived from the North Atlantic-Mediterranean realm during the warmer interstadials and lighter isotopic precipitation from the Eurasian continental interior during the colder stadials. The subdued Dansgaard-Oeschger variability likely reflects an integrated precipitation signal additionally affected by the long mixing times of the large Black Sea volume up to 1,500 years as suggested from hydrologic-isotope-balance modelling.</jats:p> |
author |
Wegwerth, Antje Schröder, Birgit Kleinhanns, Ilka C. Arz, Helge Wolfgang |
author_facet |
Wegwerth, Antje Schröder, Birgit Kleinhanns, Ilka C. Arz, Helge Wolfgang |
author_sort |
Wegwerth, Antje |
title |
Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
title_short |
Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
title_full |
Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
title_fullStr |
Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
title_full_unstemmed |
Black Sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
title_sort |
black sea hydroclimate and coupled hydrology was strongly controlled by high-latitude glacial climate dynamics |
publishDate |
2021 |
url |
https://repository.publisso.de/resource/frl:6442456 https://doi.org/10.1038/s43247-021-00129-3 |
genre |
Ice Sheet North Atlantic |
genre_facet |
Ice Sheet North Atlantic |
op_source |
http://lobid.org/resources/99370686607206441#!, 2(1):63 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1038/s43247-021-00129-3 |
container_title |
Communications Earth & Environment |
container_volume |
2 |
container_issue |
1 |
_version_ |
1782335317677703168 |