Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid- to late-Holocene
To assess the regional multi-decadal to multi-centennial climate variability along the southern Iberian Peninsula during the mid- to late-Holocene record of paleo-environmental indicators from marine sediments were established for two sites in the Alboran Sea (ODP-161-976A) and the Gulf of Cádiz (Ge...
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ftdoajarticles:oai:doaj.org/article:b4f9d85748984990bee51731c249c258 2023-05-15T17:31:35+02:00 Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid- to late-Holocene J. Schirrmacher M. Weinelt T. Blanz N. Andersen E. Salgueiro R. R. Schneider 2019-04-01T00:00:00Z https://doi.org/10.5194/cp-15-617-2019 https://doaj.org/article/b4f9d85748984990bee51731c249c258 EN eng Copernicus Publications https://www.clim-past.net/15/617/2019/cp-15-617-2019.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-15-617-2019 1814-9324 1814-9332 https://doaj.org/article/b4f9d85748984990bee51731c249c258 Climate of the Past, Vol 15, Pp 617-634 (2019) Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 article 2019 ftdoajarticles https://doi.org/10.5194/cp-15-617-2019 2022-12-31T05:40:39Z To assess the regional multi-decadal to multi-centennial climate variability along the southern Iberian Peninsula during the mid- to late-Holocene record of paleo-environmental indicators from marine sediments were established for two sites in the Alboran Sea (ODP-161-976A) and the Gulf of Cádiz (GeoB5901-2). High-resolution records of organic geochemical properties and planktic foraminiferal assemblages are used to decipher precipitation and vegetation changes as well as hydrological conditions with respect to sea surface temperature (SST) and marine primary productivity (MPP). As a proxy for precipitation change, records of plant-derived n -alkane composition suggest a series of five distinct dry episodes in southern Iberia at 5.4±0.3 ka cal BP, from 5.1 to 4.9±0.1 ka cal BP, from 4.8 to 4.7±0.1 ka cal BP, from 4.4 to 4.3±0.1 ka cal BP, and at 3.7±0.1 ka cal BP. During each dry episode the vegetation suffered from reduced water availability. Interestingly, the dry phase from 4.4 to 4.3±0.1 ka cal BP is followed by a rapid shift towards wetter conditions revealing a more complex pattern in terms of its timing and duration than was described for the 4.2 ka event in other regions. The series of dry episodes as well as closely connected hydrological variability in the Alboran Sea were probably driven by NAO-like (North Atlantic Oscillation) variability. In contrast, surface waters in the Gulf of Cádiz appear to have responded more directly to North Atlantic cooling associated with Bond events. In particular, during Bond events 3 and 4, a pronounced increase in seasonality with summer warming and winter cooling is found. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Climate of the Past 15 2 617 634 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
spellingShingle |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 J. Schirrmacher M. Weinelt T. Blanz N. Andersen E. Salgueiro R. R. Schneider Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid- to late-Holocene |
topic_facet |
Environmental pollution TD172-193.5 Environmental protection TD169-171.8 Environmental sciences GE1-350 |
description |
To assess the regional multi-decadal to multi-centennial climate variability along the southern Iberian Peninsula during the mid- to late-Holocene record of paleo-environmental indicators from marine sediments were established for two sites in the Alboran Sea (ODP-161-976A) and the Gulf of Cádiz (GeoB5901-2). High-resolution records of organic geochemical properties and planktic foraminiferal assemblages are used to decipher precipitation and vegetation changes as well as hydrological conditions with respect to sea surface temperature (SST) and marine primary productivity (MPP). As a proxy for precipitation change, records of plant-derived n -alkane composition suggest a series of five distinct dry episodes in southern Iberia at 5.4±0.3 ka cal BP, from 5.1 to 4.9±0.1 ka cal BP, from 4.8 to 4.7±0.1 ka cal BP, from 4.4 to 4.3±0.1 ka cal BP, and at 3.7±0.1 ka cal BP. During each dry episode the vegetation suffered from reduced water availability. Interestingly, the dry phase from 4.4 to 4.3±0.1 ka cal BP is followed by a rapid shift towards wetter conditions revealing a more complex pattern in terms of its timing and duration than was described for the 4.2 ka event in other regions. The series of dry episodes as well as closely connected hydrological variability in the Alboran Sea were probably driven by NAO-like (North Atlantic Oscillation) variability. In contrast, surface waters in the Gulf of Cádiz appear to have responded more directly to North Atlantic cooling associated with Bond events. In particular, during Bond events 3 and 4, a pronounced increase in seasonality with summer warming and winter cooling is found. |
format |
Article in Journal/Newspaper |
author |
J. Schirrmacher M. Weinelt T. Blanz N. Andersen E. Salgueiro R. R. Schneider |
author_facet |
J. Schirrmacher M. Weinelt T. Blanz N. Andersen E. Salgueiro R. R. Schneider |
author_sort |
J. Schirrmacher |
title |
Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid- to late-Holocene |
title_short |
Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid- to late-Holocene |
title_full |
Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid- to late-Holocene |
title_fullStr |
Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid- to late-Holocene |
title_full_unstemmed |
Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid- to late-Holocene |
title_sort |
multi-decadal atmospheric and marine climate variability in southern iberia during the mid- to late-holocene |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/cp-15-617-2019 https://doaj.org/article/b4f9d85748984990bee51731c249c258 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Climate of the Past, Vol 15, Pp 617-634 (2019) |
op_relation |
https://www.clim-past.net/15/617/2019/cp-15-617-2019.pdf https://doaj.org/toc/1814-9324 https://doaj.org/toc/1814-9332 doi:10.5194/cp-15-617-2019 1814-9324 1814-9332 https://doaj.org/article/b4f9d85748984990bee51731c249c258 |
op_doi |
https://doi.org/10.5194/cp-15-617-2019 |
container_title |
Climate of the Past |
container_volume |
15 |
container_issue |
2 |
container_start_page |
617 |
op_container_end_page |
634 |
_version_ |
1766129244347301888 |