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...
| Autores: | , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/217427 |
| Acceso en línea: | https://hdl.handle.net/2445/217427 |
| Access Level: | acceso abierto |
| Palabra clave: | Paleolimnologia Llacs Grenlàndia Canvi climàtic Paleolimnology Lakes Greenland Climatic change |
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A ~5000 year multiproxy record of summer climate in NE GreenlandGarcia-Oteyza Cira, JuliaGiralt Romeu, SantiagoPla-Rabès, SergiAntoniades, DermotOliva Franganillo, MarcGhanbari, H.Osiorio-Serrano, R.Palacios Estremera, DavidPaleolimnologiaLlacsGrenlàndiaCanvi climàticPaleolimnologyLakesGreenlandClimatic changeThe 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.Elsevier B.V.202520232025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion13 p.application/pdfhttps://hdl.handle.net/2445/217427Articles publicats en revistes (Geografia)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1016/j.scitotenv.2023.167713Science of the Total Environment, 2023, vol. 906https://doi.org/10.1016/j.scitotenv.2023.167713cc-by-nc-nd (c) Garcia-Oteyza Cira, Julia, 2023http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2174272026-05-29T05:05:01Z |
| 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 Cira, Julia Paleolimnologia Llacs Grenlàndia Canvi climàtic Paleolimnology Lakes Greenland Climatic change |
| 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 Cira, Julia Giralt Romeu, Santiago Pla-Rabès, Sergi Antoniades, Dermot Oliva Franganillo, Marc Ghanbari, H. Osiorio-Serrano, R. Palacios Estremera, David |
| author |
Garcia-Oteyza Cira, Julia |
| author_facet |
Garcia-Oteyza Cira, Julia Giralt Romeu, Santiago Pla-Rabès, Sergi Antoniades, Dermot Oliva Franganillo, Marc Ghanbari, H. Osiorio-Serrano, R. Palacios Estremera, David |
| author_role |
author |
| author2 |
Giralt Romeu, Santiago Pla-Rabès, Sergi Antoniades, Dermot Oliva Franganillo, Marc Ghanbari, H. Osiorio-Serrano, R. Palacios Estremera, David |
| author2_role |
author author author author author author author |
| dc.subject.none.fl_str_mv |
Paleolimnologia Llacs Grenlàndia Canvi climàtic Paleolimnology Lakes Greenland Climatic change |
| topic |
Paleolimnologia Llacs Grenlàndia Canvi climàtic Paleolimnology Lakes Greenland Climatic change |
| 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 |
2023 |
| dc.date.none.fl_str_mv |
2023 2025 2025 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
https://hdl.handle.net/2445/217427 |
| url |
https://hdl.handle.net/2445/217427 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Versió postprint del document publicat a: https://doi.org/10.1016/j.scitotenv.2023.167713 Science of the Total Environment, 2023, vol. 906 https://doi.org/10.1016/j.scitotenv.2023.167713 |
| dc.rights.none.fl_str_mv |
cc-by-nc-nd (c) Garcia-Oteyza Cira, Julia, 2023 http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
cc-by-nc-nd (c) Garcia-Oteyza Cira, Julia, 2023 http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
13 p. application/pdf |
| dc.publisher.none.fl_str_mv |
Elsevier B.V. |
| publisher.none.fl_str_mv |
Elsevier B.V. |
| dc.source.none.fl_str_mv |
Articles publicats en revistes (Geografia) reponame:Recercat. Dipósit de la Recerca de Catalunya instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| instname_str |
Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
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Recercat. Dipósit de la Recerca de Catalunya |
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Recercat. Dipósit de la Recerca de Catalunya |
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