Rapid Atlantification along the Fram Strait at the beginning of the 20th century
The recent expansion of Atlantic waters into the Arctic Ocean represents undisputable evidence of the rapid changes occurring in this region. Understanding the past variability of this “Atlantification” is thus crucial in providing a longer perspective on the modern Arctic changes. Here, we reconstr...
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ftawi:oai:epic.awi.de:55404 2024-09-15T17:52:16+00:00 Rapid Atlantification along the Fram Strait at the beginning of the 20th century Tesi, Tommaso Muschitiello, Francesco Mollenhauer, Gesine Miserocchi, Stefano Langone, Leonardo Ceccarelli, Chiara Panieri, Giuliana Chiggiato, Jacopo Nogarotto, Alessio Hefter, Jens Ingrosso, Gianmarco Giglio, Federico Giordano, Patrizia Capotondi, Lucilla 2021-11-24 https://epic.awi.de/id/eprint/55404/ https://doi.org/10.1126/sciadv.abj2946 https://hdl.handle.net/10013/epic.766b6d85-8b9f-4050-a067-e8a07600752b unknown Tesi, T. , Muschitiello, F. , Mollenhauer, G. orcid:0000-0001-5138-564X , Miserocchi, S. , Langone, L. , Ceccarelli, C. , Panieri, G. , Chiggiato, J. , Nogarotto, A. , Hefter, J. orcid:0000-0002-5823-1966 , Ingrosso, G. , Giglio, F. , Giordano, P. and Capotondi, L. (2021) Rapid Atlantification along the Fram Strait at the beginning of the 20th century , Science Advances, 7 (48) . doi:10.1126/sciadv.abj2946 <https://doi.org/10.1126/sciadv.abj2946> , hdl:10013/epic.766b6d85-8b9f-4050-a067-e8a07600752b EPIC3Science Advances, 7(48), ISSN: 2375-2548 Article isiRev 2021 ftawi https://doi.org/10.1126/sciadv.abj2946 2024-06-24T04:27:29Z The recent expansion of Atlantic waters into the Arctic Ocean represents undisputable evidence of the rapid changes occurring in this region. Understanding the past variability of this “Atlantification” is thus crucial in providing a longer perspective on the modern Arctic changes. Here, we reconstruct the history of Atlantification along the eastern Fram Strait during the past 800 years using precisely dated paleoceanographic records based on organic biomarkers and benthic foraminiferal data. Our results show rapid changes in water mass properties that com-menced in the early 20th century—several decades before the documented Atlantification by instrumental records. Comparison with regional records suggests a poleward expansion of subtropical waters since the end of the Little Ice Age in response to a rapid hydrographic reorganization in the North Atlantic. Understanding of this mechanism will require further investigations using climate model simulations.INTRODUCTIONClimate reconstructions of the Common Era are fundamental bench-marks to place human-induced changes into the context of natural climatic change (1, 2). This is particularly relevant for the Arctic, which is currently warming faster than any other region (3). Arctic warming has been associated with rapid sea ice decline and expan-sion of Atlantic waters (AWs) into the Arctic basin (4, 5) — a phenomenon commonly referred to as “Atlantification” (6). While in situ observations and satellite images provide high-resolution records of anomalies in water mass properties and sea ice since the 1930s and 1980s (4, 7–10), respectively, little is known about this phenomenon in pre- and early-industrial times. Because natural archives preserve evidence of past climate variability, they can offer a longer-term perspective on Atlantification in this region.The Fram Strait represents an important oceanographic gateway that allows the exchange of Arctic and AW masses (11). Low-resolution paleoceanographic records suggest that the summer temperatures of the AW ... Article in Journal/Newspaper Arctic Basin Arctic Ocean Foraminifera* Fram Strait North Atlantic Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Science Advances 7 48 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
The recent expansion of Atlantic waters into the Arctic Ocean represents undisputable evidence of the rapid changes occurring in this region. Understanding the past variability of this “Atlantification” is thus crucial in providing a longer perspective on the modern Arctic changes. Here, we reconstruct the history of Atlantification along the eastern Fram Strait during the past 800 years using precisely dated paleoceanographic records based on organic biomarkers and benthic foraminiferal data. Our results show rapid changes in water mass properties that com-menced in the early 20th century—several decades before the documented Atlantification by instrumental records. Comparison with regional records suggests a poleward expansion of subtropical waters since the end of the Little Ice Age in response to a rapid hydrographic reorganization in the North Atlantic. Understanding of this mechanism will require further investigations using climate model simulations.INTRODUCTIONClimate reconstructions of the Common Era are fundamental bench-marks to place human-induced changes into the context of natural climatic change (1, 2). This is particularly relevant for the Arctic, which is currently warming faster than any other region (3). Arctic warming has been associated with rapid sea ice decline and expan-sion of Atlantic waters (AWs) into the Arctic basin (4, 5) — a phenomenon commonly referred to as “Atlantification” (6). While in situ observations and satellite images provide high-resolution records of anomalies in water mass properties and sea ice since the 1930s and 1980s (4, 7–10), respectively, little is known about this phenomenon in pre- and early-industrial times. Because natural archives preserve evidence of past climate variability, they can offer a longer-term perspective on Atlantification in this region.The Fram Strait represents an important oceanographic gateway that allows the exchange of Arctic and AW masses (11). Low-resolution paleoceanographic records suggest that the summer temperatures of the AW ... |
format |
Article in Journal/Newspaper |
author |
Tesi, Tommaso Muschitiello, Francesco Mollenhauer, Gesine Miserocchi, Stefano Langone, Leonardo Ceccarelli, Chiara Panieri, Giuliana Chiggiato, Jacopo Nogarotto, Alessio Hefter, Jens Ingrosso, Gianmarco Giglio, Federico Giordano, Patrizia Capotondi, Lucilla |
spellingShingle |
Tesi, Tommaso Muschitiello, Francesco Mollenhauer, Gesine Miserocchi, Stefano Langone, Leonardo Ceccarelli, Chiara Panieri, Giuliana Chiggiato, Jacopo Nogarotto, Alessio Hefter, Jens Ingrosso, Gianmarco Giglio, Federico Giordano, Patrizia Capotondi, Lucilla Rapid Atlantification along the Fram Strait at the beginning of the 20th century |
author_facet |
Tesi, Tommaso Muschitiello, Francesco Mollenhauer, Gesine Miserocchi, Stefano Langone, Leonardo Ceccarelli, Chiara Panieri, Giuliana Chiggiato, Jacopo Nogarotto, Alessio Hefter, Jens Ingrosso, Gianmarco Giglio, Federico Giordano, Patrizia Capotondi, Lucilla |
author_sort |
Tesi, Tommaso |
title |
Rapid Atlantification along the Fram Strait at the beginning of the 20th century |
title_short |
Rapid Atlantification along the Fram Strait at the beginning of the 20th century |
title_full |
Rapid Atlantification along the Fram Strait at the beginning of the 20th century |
title_fullStr |
Rapid Atlantification along the Fram Strait at the beginning of the 20th century |
title_full_unstemmed |
Rapid Atlantification along the Fram Strait at the beginning of the 20th century |
title_sort |
rapid atlantification along the fram strait at the beginning of the 20th century |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/55404/ https://doi.org/10.1126/sciadv.abj2946 https://hdl.handle.net/10013/epic.766b6d85-8b9f-4050-a067-e8a07600752b |
genre |
Arctic Basin Arctic Ocean Foraminifera* Fram Strait North Atlantic Sea ice |
genre_facet |
Arctic Basin Arctic Ocean Foraminifera* Fram Strait North Atlantic Sea ice |
op_source |
EPIC3Science Advances, 7(48), ISSN: 2375-2548 |
op_relation |
Tesi, T. , Muschitiello, F. , Mollenhauer, G. orcid:0000-0001-5138-564X , Miserocchi, S. , Langone, L. , Ceccarelli, C. , Panieri, G. , Chiggiato, J. , Nogarotto, A. , Hefter, J. orcid:0000-0002-5823-1966 , Ingrosso, G. , Giglio, F. , Giordano, P. and Capotondi, L. (2021) Rapid Atlantification along the Fram Strait at the beginning of the 20th century , Science Advances, 7 (48) . doi:10.1126/sciadv.abj2946 <https://doi.org/10.1126/sciadv.abj2946> , hdl:10013/epic.766b6d85-8b9f-4050-a067-e8a07600752b |
op_doi |
https://doi.org/10.1126/sciadv.abj2946 |
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Science Advances |
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7 |
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48 |
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