A ∼5000 year multiproxy record of summer climate in NE Greenland

The High Arctic plays a vital role in Earth's climate system, and its ecosystems are highly sensitive to global climate change. High Arctic lakes are valuable sentinels of climate change, as their sediments integrate long-term natural climatic fluctuations and anthropogenic influences. Here, we...

Descripción completa

Detalles Bibliográficos
Autores: Garcia-Oteyza, J., Giralt, Santiago, Pla-Rabes, Sergi, Antoniades, D., Oliva, M., Ghanbari, H., Osorio-Serrano, R., Palacios, D.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/347808
Acceso en línea:http://hdl.handle.net/10261/347808
Access Level:acceso abierto
Palabra clave:NE Greenland
Aucella Lake
Arctic lakes
Paleolimnology
Climate variability
Multiproxy analysis
id ES_f818294c52de242307dfd97b74fc5fda
oai_identifier_str oai:digital.csic.es:10261/347808
network_acronym_str ES
network_name_str España
repository_id_str
spelling A ∼5000 year multiproxy record of summer climate in NE GreenlandGarcia-Oteyza, J.Giralt, SantiagoPla-Rabes, SergiAntoniades, D.Oliva, M.Ghanbari, H.Osorio-Serrano, R.Palacios, D.NE GreenlandAucella LakeArctic lakesPaleolimnologyClimate variabilityMultiproxy analysisThe High Arctic plays a vital role in Earth's climate system, and its ecosystems are highly sensitive to global climate change. High Arctic lakes are valuable sentinels of climate change, as their sediments integrate long-term natural climatic fluctuations and anthropogenic influences. Here, we present a high-resolution ∼5000 year-reconstruction of NE Greenland climate variability from Aucella Lake (74°N, 20°E) based on physical, chemical, and biological properties of lake sediments. We use CT-scans, hyperspectral imaging, organic matter, XRD, and diatom analyses to show that changing air temperatures were controlled by a mix of regional climatic changes and local landscape feedbacks. The latest Mid-Holocene (∼5.0–3.8 cal. ka BP) was characterized by relatively warmer conditions, while the onset of the Late-Holocene was marked by abrupt temperature decreases that coincided with the beginning of glacial advances elsewhere (∼3.8–3.4 cal. ka BP). From ∼3.4–2.4 cal. ka BP, the sedimentary record indicated progressive warming, with temperature peaking during the Medieval Climate Anomaly, although temperature rises were punctuated by abrupt, short-lived cold periods. From ∼1.1–0.05 cal. ka BP, the influence of landscape factors over the system diminished. Sedimentary indicators suggested a transition towards a colder, more humid climate, coinciding with the beginning of the Little Ice Age, that was characterized by a marked decrease in air temperature that reached minimum values at the end of this period. The last 50 years at Aucella Lake were marked by abrupt temperature rises, consistent with recently observed anthropogenic global warming. Our results illustrate the importance of high-resolution multiproxy studies for accurately characterizing lake linkages to their environment and climate.This research was funded by the project PALEOGREEN (CTM2017-87976-P) of the Spanish Ministry of Economy and Competitiveness. Field work was also supported by an INTERACT Transnational Access grant (Ref. 730938, GLACIGREEN) and by the Research Group ANTALP (Antarctic, Arctic, Alpine Environments; 2017-SGR-1102), funded by the Government of Catalonia. Julia Garcia-Oteyza was supported by an FPI fellowship from the Spanish Ministry of Science, Innovation and Universities.ElsevierMinisterio de Economía y Competitividad (España)Generalitat de CatalunyaMinisterio de Ciencia, Innovación y Universidades (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2024202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/347808reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2017-87976-Phttp://dx.doi.org/10.1016/j.scitotenv.2023.167713Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3478082026-05-22T06:33:51Z
dc.title.none.fl_str_mv A ∼5000 year multiproxy record of summer climate in NE Greenland
title A ∼5000 year multiproxy record of summer climate in NE Greenland
spellingShingle A ∼5000 year multiproxy record of summer climate in NE Greenland
Garcia-Oteyza, J.
NE Greenland
Aucella Lake
Arctic lakes
Paleolimnology
Climate variability
Multiproxy analysis
title_short A ∼5000 year multiproxy record of summer climate in NE Greenland
title_full A ∼5000 year multiproxy record of summer climate in NE Greenland
title_fullStr A ∼5000 year multiproxy record of summer climate in NE Greenland
title_full_unstemmed A ∼5000 year multiproxy record of summer climate in NE Greenland
title_sort A ∼5000 year multiproxy record of summer climate in NE Greenland
dc.creator.none.fl_str_mv Garcia-Oteyza, J.
Giralt, Santiago
Pla-Rabes, Sergi
Antoniades, D.
Oliva, M.
Ghanbari, H.
Osorio-Serrano, R.
Palacios, D.
author Garcia-Oteyza, J.
author_facet Garcia-Oteyza, J.
Giralt, Santiago
Pla-Rabes, Sergi
Antoniades, D.
Oliva, M.
Ghanbari, H.
Osorio-Serrano, R.
Palacios, D.
author_role author
author2 Giralt, Santiago
Pla-Rabes, Sergi
Antoniades, D.
Oliva, M.
Ghanbari, H.
Osorio-Serrano, R.
Palacios, D.
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Generalitat de Catalunya
Ministerio de Ciencia, Innovación y Universidades (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv NE Greenland
Aucella Lake
Arctic lakes
Paleolimnology
Climate variability
Multiproxy analysis
topic NE Greenland
Aucella Lake
Arctic lakes
Paleolimnology
Climate variability
Multiproxy analysis
description The High Arctic plays a vital role in Earth's climate system, and its ecosystems are highly sensitive to global climate change. High Arctic lakes are valuable sentinels of climate change, as their sediments integrate long-term natural climatic fluctuations and anthropogenic influences. Here, we present a high-resolution ∼5000 year-reconstruction of NE Greenland climate variability from Aucella Lake (74°N, 20°E) based on physical, chemical, and biological properties of lake sediments. We use CT-scans, hyperspectral imaging, organic matter, XRD, and diatom analyses to show that changing air temperatures were controlled by a mix of regional climatic changes and local landscape feedbacks. The latest Mid-Holocene (∼5.0–3.8 cal. ka BP) was characterized by relatively warmer conditions, while the onset of the Late-Holocene was marked by abrupt temperature decreases that coincided with the beginning of glacial advances elsewhere (∼3.8–3.4 cal. ka BP). From ∼3.4–2.4 cal. ka BP, the sedimentary record indicated progressive warming, with temperature peaking during the Medieval Climate Anomaly, although temperature rises were punctuated by abrupt, short-lived cold periods. From ∼1.1–0.05 cal. ka BP, the influence of landscape factors over the system diminished. Sedimentary indicators suggested a transition towards a colder, more humid climate, coinciding with the beginning of the Little Ice Age, that was characterized by a marked decrease in air temperature that reached minimum values at the end of this period. The last 50 years at Aucella Lake were marked by abrupt temperature rises, consistent with recently observed anthropogenic global warming. Our results illustrate the importance of high-resolution multiproxy studies for accurately characterizing lake linkages to their environment and climate.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/347808
url http://hdl.handle.net/10261/347808
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2017-87976-P
http://dx.doi.org/10.1016/j.scitotenv.2023.167713
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869424969788686336
score 15,81155

Similares en LA Referencia