Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks
Obtaining reliable reconstructions of long-term atmospheric circulation changes in the North Atlantic region presents a persistent challenge to contemporary paleoclimate research, which has been addressed by a multitude of recent studies. In order to contribute a novel methodological aspect to this...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2017
|
Subjects: | |
Online Access: | https://publications.pik-potsdam.de/pubman/item/item_21621 https://publications.pik-potsdam.de/pubman/item/item_21621_1/component/file_21622/7590oa.pdf |
id |
ftpotsdamik:oai:publications.pik-potsdam.de:item_21621 |
---|---|
record_format |
openpolar |
spelling |
ftpotsdamik:oai:publications.pik-potsdam.de:item_21621 2023-10-29T02:36:15+01:00 Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks Franke, J. Werner, J. Donner, R. 2017 application/pdf https://publications.pik-potsdam.de/pubman/item/item_21621 https://publications.pik-potsdam.de/pubman/item/item_21621_1/component/file_21622/7590oa.pdf unknown info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-13-1593-2017 https://publications.pik-potsdam.de/pubman/item/item_21621 https://publications.pik-potsdam.de/pubman/item/item_21621_1/component/file_21622/7590oa.pdf info:eu-repo/semantics/openAccess Climate of the Past info:eu-repo/semantics/article 2017 ftpotsdamik https://doi.org/10.5194/cp-13-1593-2017 2023-09-30T17:59:29Z Obtaining reliable reconstructions of long-term atmospheric circulation changes in the North Atlantic region presents a persistent challenge to contemporary paleoclimate research, which has been addressed by a multitude of recent studies. In order to contribute a novel methodological aspect to this active field, we apply here evolving functional network analysis, a recently developed tool for studying temporal changes of the spatial co-variability structure of the Earth's climate system, to a set of Late Holocene paleoclimate proxy records covering the last two millennia. The emerging patterns obtained by our analysis are related to long-term changes in the dominant mode of atmospheric circulation in the region, the North Atlantic Oscillation (NAO). By comparing the time-dependent inter-regional linkage structures of the obtained functional paleoclimate network representations to a recent multi-centennial NAO reconstruction, we identify co-variability between southern Greenland, Svalbard, and Fennoscandia as being indicative of a positive NAO phase, while connections from Greenland and Fennoscandia to central Europe are more pronounced during negative NAO phases. By drawing upon this correspondence, we use some key parameters of the evolving network structure to obtain a qualitative reconstruction of the NAO long-term variability over the entire Common Era (last 2000 years) using a linear regression model trained upon the existing shorter reconstruction. Article in Journal/Newspaper Fennoscandia Greenland North Atlantic North Atlantic oscillation Svalbard Publication Database PIK (Potsdam Institute for Climate Impact Research) Climate of the Past 13 11 1593 1608 |
institution |
Open Polar |
collection |
Publication Database PIK (Potsdam Institute for Climate Impact Research) |
op_collection_id |
ftpotsdamik |
language |
unknown |
description |
Obtaining reliable reconstructions of long-term atmospheric circulation changes in the North Atlantic region presents a persistent challenge to contemporary paleoclimate research, which has been addressed by a multitude of recent studies. In order to contribute a novel methodological aspect to this active field, we apply here evolving functional network analysis, a recently developed tool for studying temporal changes of the spatial co-variability structure of the Earth's climate system, to a set of Late Holocene paleoclimate proxy records covering the last two millennia. The emerging patterns obtained by our analysis are related to long-term changes in the dominant mode of atmospheric circulation in the region, the North Atlantic Oscillation (NAO). By comparing the time-dependent inter-regional linkage structures of the obtained functional paleoclimate network representations to a recent multi-centennial NAO reconstruction, we identify co-variability between southern Greenland, Svalbard, and Fennoscandia as being indicative of a positive NAO phase, while connections from Greenland and Fennoscandia to central Europe are more pronounced during negative NAO phases. By drawing upon this correspondence, we use some key parameters of the evolving network structure to obtain a qualitative reconstruction of the NAO long-term variability over the entire Common Era (last 2000 years) using a linear regression model trained upon the existing shorter reconstruction. |
format |
Article in Journal/Newspaper |
author |
Franke, J. Werner, J. Donner, R. |
spellingShingle |
Franke, J. Werner, J. Donner, R. Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks |
author_facet |
Franke, J. Werner, J. Donner, R. |
author_sort |
Franke, J. |
title |
Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks |
title_short |
Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks |
title_full |
Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks |
title_fullStr |
Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks |
title_full_unstemmed |
Reconstructing Late Holocene North Atlantic atmospheric circulation changes using functional paleoclimate networks |
title_sort |
reconstructing late holocene north atlantic atmospheric circulation changes using functional paleoclimate networks |
publishDate |
2017 |
url |
https://publications.pik-potsdam.de/pubman/item/item_21621 https://publications.pik-potsdam.de/pubman/item/item_21621_1/component/file_21622/7590oa.pdf |
genre |
Fennoscandia Greenland North Atlantic North Atlantic oscillation Svalbard |
genre_facet |
Fennoscandia Greenland North Atlantic North Atlantic oscillation Svalbard |
op_source |
Climate of the Past |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/cp-13-1593-2017 https://publications.pik-potsdam.de/pubman/item/item_21621 https://publications.pik-potsdam.de/pubman/item/item_21621_1/component/file_21622/7590oa.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/cp-13-1593-2017 |
container_title |
Climate of the Past |
container_volume |
13 |
container_issue |
11 |
container_start_page |
1593 |
op_container_end_page |
1608 |
_version_ |
1781059961765232640 |