气候变化领域集成服务门户(CCPortal): Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid-to late-Holocene

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DOI	10.5194/cp-15-617-2019
	Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid-to late-Holocene
	Schirrmacher J.; Weinelt M.; Blanz T.; Andersen N.; Salgueiro E.; Schneider R.R.
发表日期	2019
ISSN	18149324
起始页码	617
结束页码	634
卷号	15 期号:2
英文摘要	To assess the regional multi-decadal to multicentennial climate variability along the southern Iberian Peninsula during the mid-to late-Holocene record of paleoenvironmental 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. ©2019 Author(s).
语种	英语
scopus关键词	assembly rule; atmospheric dynamics; climate variation; cooling; decadal variation; geochemistry; historical record; Holocene; marine environment; marine sediment; North Atlantic Oscillation; paleoceanography; paleoenvironment; planktonic foraminifera; primary production; summer; water availability; winter; Alboran Sea; Atlantic Ocean; Gulf of Cadiz; Iberian Peninsula; Mediterranean Sea
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146834
作者单位	CRC 1266, Christian-Albrechts-Universität, Kiel, 24118, Germany; Leibniz-Laboratory for Radiometric Dating and Stable Isotope Research, Christian-Albrechts-Universität, Kiel, 24118, Germany; Department of Geosciences, Christian-Albrechts-Universität, Kiel, 24118, Germany; Div. Geologia e Georecursos Marinhos, Instituto Português Do Mar e da Atmosfera (IPMA), Lisbon, 1749-077, Portugal; CCMAR, Centro de Ciências Do Mar, Universidade Do Algarve, Campus de Gambelas, Faro, 8005-139, Portugal
推荐引用方式 GB/T 7714	Schirrmacher J.,Weinelt M.,Blanz T.,et al. Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid-to late-Holocene[J],2019,15(2).
APA	Schirrmacher J.,Weinelt M.,Blanz T.,Andersen N.,Salgueiro E.,&Schneider R.R..(2019).Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid-to late-Holocene.Climate of the Past,15(2).
MLA	Schirrmacher J.,et al."Multi-decadal atmospheric and marine climate variability in southern Iberia during the mid-to late-Holocene".Climate of the Past 15.2(2019).