A Synoptic Scale Perspective on Greenland Ice Core d18O Variability and Related Teleconnection Patterns
The variability of stable oxygen isotope ratios (δ18O) from Greenland ice cores is commonly linked to changes in local climate and associated teleconnection patterns. In this respect, in this study we investigate ice core δ18O variability from a synoptic scale perspective to assess the potential o...
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ftawi:oai:epic.awi.de:53888 2024-09-15T18:08:21+00:00 A Synoptic Scale Perspective on Greenland Ice Core d18O Variability and Related Teleconnection Patterns Rimbu, Norel Ionita, Monica Lohmann, Gerrit 2021 application/pdf https://epic.awi.de/id/eprint/53888/ https://epic.awi.de/id/eprint/53888/1/Rimbu-Atmosphere2021.pdf https://www.mdpi.com/2073-4433/12/3/294 https://hdl.handle.net/10013/epic.e0bbba22-efa1-47a9-a665-c055e2aa5edc unknown MDPI https://epic.awi.de/id/eprint/53888/1/Rimbu-Atmosphere2021.pdf Rimbu, N. orcid:0000-0003-2832-9396 , Ionita, M. orcid:0000-0001-8240-4380 and Lohmann, G. orcid:0000-0003-2089-733X (2021) A Synoptic Scale Perspective on Greenland Ice Core d18O Variability and Related Teleconnection Patterns , Atmosphere, 12 (3) . doi:10.3390/atmos12030294 <https://doi.org/10.3390/atmos12030294> , hdl:10013/epic.e0bbba22-efa1-47a9-a665-c055e2aa5edc EPIC3Atmosphere, MDPI, 12(3), ISSN: 2073-4433 Article isiRev 2021 ftawi https://doi.org/10.3390/atmos12030294 2024-06-24T04:26:11Z The variability of stable oxygen isotope ratios (δ18O) from Greenland ice cores is commonly linked to changes in local climate and associated teleconnection patterns. In this respect, in this study we investigate ice core δ18O variability from a synoptic scale perspective to assess the potential of such records as proxies for extreme climate variability and associated weather patterns. We show that positive (negative) δ18O anomalies in three southern and central Greenland ice cores are associated with relatively high (low) Rossby Wave Breaking (RWB) activity in the North Atlantic region. Both cyclonic and anticyclonic RWB patterns associated with high δ18O show filaments of strong moisture transport from the Atlantic Ocean towards Greenland. During such events, warm and wet conditions are recorded over southern, western and central part of Greenland. In the same time the cyclonic and anticyclonic RWB patterns show enhanced southward advection of cold polar air masses on their eastern side, leading to extreme cold conditions over Europe. The association between high δ18O winters in Greenland ice cores and extremely cold winters over Europe is partly explained by the modulation of the RWB frequency by the tropical Atlantic sea surface temperature forcing, as shown in recent modeling studies. We argue that δ18O from Greenland ice cores can be used as a proxy for RWB activity in the Atlantic European region and associated extreme weather and climate anomalies. Article in Journal/Newspaper Greenland Greenland ice core Greenland ice cores ice core North Atlantic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Atmosphere 12 3 294 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The variability of stable oxygen isotope ratios (δ18O) from Greenland ice cores is commonly linked to changes in local climate and associated teleconnection patterns. In this respect, in this study we investigate ice core δ18O variability from a synoptic scale perspective to assess the potential of such records as proxies for extreme climate variability and associated weather patterns. We show that positive (negative) δ18O anomalies in three southern and central Greenland ice cores are associated with relatively high (low) Rossby Wave Breaking (RWB) activity in the North Atlantic region. Both cyclonic and anticyclonic RWB patterns associated with high δ18O show filaments of strong moisture transport from the Atlantic Ocean towards Greenland. During such events, warm and wet conditions are recorded over southern, western and central part of Greenland. In the same time the cyclonic and anticyclonic RWB patterns show enhanced southward advection of cold polar air masses on their eastern side, leading to extreme cold conditions over Europe. The association between high δ18O winters in Greenland ice cores and extremely cold winters over Europe is partly explained by the modulation of the RWB frequency by the tropical Atlantic sea surface temperature forcing, as shown in recent modeling studies. We argue that δ18O from Greenland ice cores can be used as a proxy for RWB activity in the Atlantic European region and associated extreme weather and climate anomalies. |
format |
Article in Journal/Newspaper |
author |
Rimbu, Norel Ionita, Monica Lohmann, Gerrit |
spellingShingle |
Rimbu, Norel Ionita, Monica Lohmann, Gerrit A Synoptic Scale Perspective on Greenland Ice Core d18O Variability and Related Teleconnection Patterns |
author_facet |
Rimbu, Norel Ionita, Monica Lohmann, Gerrit |
author_sort |
Rimbu, Norel |
title |
A Synoptic Scale Perspective on Greenland Ice Core d18O Variability and Related Teleconnection Patterns |
title_short |
A Synoptic Scale Perspective on Greenland Ice Core d18O Variability and Related Teleconnection Patterns |
title_full |
A Synoptic Scale Perspective on Greenland Ice Core d18O Variability and Related Teleconnection Patterns |
title_fullStr |
A Synoptic Scale Perspective on Greenland Ice Core d18O Variability and Related Teleconnection Patterns |
title_full_unstemmed |
A Synoptic Scale Perspective on Greenland Ice Core d18O Variability and Related Teleconnection Patterns |
title_sort |
synoptic scale perspective on greenland ice core d18o variability and related teleconnection patterns |
publisher |
MDPI |
publishDate |
2021 |
url |
https://epic.awi.de/id/eprint/53888/ https://epic.awi.de/id/eprint/53888/1/Rimbu-Atmosphere2021.pdf https://www.mdpi.com/2073-4433/12/3/294 https://hdl.handle.net/10013/epic.e0bbba22-efa1-47a9-a665-c055e2aa5edc |
genre |
Greenland Greenland ice core Greenland ice cores ice core North Atlantic |
genre_facet |
Greenland Greenland ice core Greenland ice cores ice core North Atlantic |
op_source |
EPIC3Atmosphere, MDPI, 12(3), ISSN: 2073-4433 |
op_relation |
https://epic.awi.de/id/eprint/53888/1/Rimbu-Atmosphere2021.pdf Rimbu, N. orcid:0000-0003-2832-9396 , Ionita, M. orcid:0000-0001-8240-4380 and Lohmann, G. orcid:0000-0003-2089-733X (2021) A Synoptic Scale Perspective on Greenland Ice Core d18O Variability and Related Teleconnection Patterns , Atmosphere, 12 (3) . doi:10.3390/atmos12030294 <https://doi.org/10.3390/atmos12030294> , hdl:10013/epic.e0bbba22-efa1-47a9-a665-c055e2aa5edc |
op_doi |
https://doi.org/10.3390/atmos12030294 |
container_title |
Atmosphere |
container_volume |
12 |
container_issue |
3 |
container_start_page |
294 |
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1810445709933019136 |