Late Quaternary Climate Variations Reflected in Baltic Sea Sediments

Harff, Jan; Endler, Rudolf; Emelyanov, Emel; Kotov, Sergey; Leipe, Thomas; Moros, Matthias; Olea, Ricardo A.; Tomczak, Michał; Witkowski, Andrzej

doi:10.1007/978-3-642-17220-5_5

Cited by 26 publications

(35 citation statements)

References 53 publications

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“…A number of authors have suggested that the AO/NAO was in a positive or high index phase during the MH based on Holocene temperature gradients across Europe (Davis and Brewer, 2009), water levels in groundwater-fed lakes in the Mediterranean (Davis and Stevenson, 2007), the distribution of Arctic driftwood (Funder et al, 2011), the mass-balance of Norwegian glaciers (Nesje et al, 2001), and the pattern of Atlantic sea surface temperatures (Rimbu et al, 2004). Strong westerly winds such as those experienced under a positive AO/NAO were also proposed by Vork and Thomsen (1996) to explain the occurrence of thermophilious Mediterranean ostracods around the coast of Denmark in the MH, as well as by Harff et al (2011) to explain the elevated salinity of the Baltic Sea at this time. The study by Vork and Thomsen (1996) suggested that winter sea surface temperatures were around 5-6 • C above present around Denmark in the MH in order to explain the observed ostracod fauna, supporting our reconstruction of much higher than present winter temperatures over northern Europe at this time.…”

Section: Wintermentioning

confidence: 90%

The influence of atmospheric circulation on the mid-Holocene climate of Europe: a data–model comparison

Mauri

Davis

Collins³

et al. 2014

Clim. Past

113

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Abstract. The atmospheric circulation is a key area of uncertainty in climate model simulations of future climate change, especially in mid-latitude regions such as Europe where atmospheric dynamics have a significant role in climate variability. It has been proposed that the mid-Holocene was characterized in Europe by a stronger westerly circulation in winter comparable with a more positive AO/NAO, and a weaker westerly circulation in summer caused by anticyclonic blocking near Scandinavia. Model simulations indicate at best only a weakly positive AO/NAO, whilst changes in summer atmospheric circulation have not been widely investigated. Here we use a new pollen-based reconstruction of European mid-Holocene climate to investigate the role of atmospheric circulation in explaining the spatial pattern of seasonal temperature and precipitation anomalies. We find that the footprint of the anomalies is entirely consistent with those from modern analogue atmospheric circulation patterns associated with a strong westerly circulation in winter (positive AO/NAO) and a weak westerly circulation in summer associated with anti-cyclonic blocking (positive SCAND). We find little agreement between the reconstructed anomalies and those from 14 GCMs that performed mid-Holocene experiments as part of the PMIP3/CMIP5 project, which show a much greater sensitivity to top-of-the-atmosphere changes in solar insolation. Our findings are consistent with datamodel comparisons on contemporary timescales that indicate that models underestimate the role of atmospheric circulation in recent climate change, whilst also highlighting the importance of atmospheric dynamics in explaining interglacial warming.

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Section: Wintermentioning

confidence: 90%

The influence of atmospheric circulation on the mid-Holocene climate of Europe: a data–model comparison

Mauri

Davis

Collins³

et al. 2014

Clim. Past

113

View full text Add to dashboard Cite

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“…Principal component analysis (PCA) may be used to discriminate element data to identify different sedimentary facies. For example, Harff et al (2011) used PCA for facies interpretation in a Baltic Sea core (Eastern Gotland Basin) identifying three factors each characterised by specific element character:…”

Section: Cluster Analysis and Facies Interpretation Of Sedimentary Enmentioning

confidence: 99%

Twenty Years of XRF Core Scanning Marine Sediments: What Do Geochemical Proxies Tell Us?

Rothwell

Croudace

2015

Developments in Paleoenvironmental Research

138

128

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XRF core scanners, with their rapid and non-destructive analytical capability, have now been used for two decades in the analysis of marine sediments. Initially they were used to record variations in fundamental parameters such as calcium carbonate stratigraphy and terrigenous sediment delivery, using major element integrals, such as Ca and Fe, to provide detailed insights into oceanographic and climatic processes. In recent years, proxy selection has progressed to routine normalisation and presentation as log-ratios to include 60 elements or ratios to document a wide range of environmental and process changes. We review the development and application of XRF core scanning of marine sediments and discuss the basis of particular proxies, their uses and limitations to assist users in their selection. To date, there has been no systematic overview of elemental proxies and their application in the analysis of marine sediment records.

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“…The Mastogloia Sea has been rec og nized be tween the fresh wa ter Ancylus Lake and the brack ish-wa ter Litorina Sea as a tran si tional di a tom-strati graphic unit (Kessel and Pork, 1974;Cker et al, 1988;Hyvärinen et al, 1988Hyvärinen et al, , 1992Haila et al, 1991) based on the pres ence of weakly brack ish-wa ter di atom as sem blages par tic u larly in the lit to ral se quences (Hyvärinen, 1984(Hyvärinen, , 2000, whereas in the off shore se quences such a tran si tional unit is com monly ab sent (Ignatius et al, 1981). Lately, this sub-stage was re named Early (Ini tial) Litorina Sea, mark ing pen e tra tion of sa line wa ter to the BSB about 9800-8500 cal yr BP (Andrén et al, 2000;Berglund et al, 2005;Harff et al, 2011). The slightly brack ish-wa ter di a toms oc cur in the sed i ment se quences of Fin land since 8800 cal yr BP (Eronen, 1974), and about 8500 cal yr BP in west ern Es to nia (Hyvärinen et al, 1988).…”

Section: Introductionmentioning

confidence: 99%

Relative sea-level changes and development of the Hiiumaa Island, Estonia, during the Holocene

Vassiljev

Saarse

Grudzinska

et al. 2015

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1 Tallinn Uni ver sity of Tech nol ogy, In sti tute of Ge ol ogy, Ehitajate tee 5, 19086 Tallinn, Es to nia Vassiljev, J., Saarse, L., Grudzinska, I., Heinsalu, A., 2015. Rel a tive sea level changes and de vel op ment of the Hiiumaa Island, Es to nia, dur ing the Ho lo cene. Geo log i cal Quar terly, 59 (3): 517-530, doi: 10.7306/gq.1227Three sed i ment cores (Loopsoo, Tihu, Prassi) from Hiiumaa Is land (Es to nia) were in ves ti gated us ing di a toms, lithological prox ies, mag netic sus cep ti bil ity, geo chron ol ogi cal dates and in cor po rated with the pre vi ously stud ied Káivasoo site, aim ing to re con struct the de vel op ment of the is land and shore line changes dur ing the Litorina Sea and the Limnea Sea. The high est level of the Litorina Sea shore line near Káivasoo is at 27.6 m a.s.l., and it oc curred dur ing the Ini tial Litorina Sea. Within the Litorina Sea trans gres sion, 7800 cal yr BP, rel a tive sea level reached 24.9 m a.s.l. at Káivasoo, 24.1 m a.s.l. at Loopsoo, 23.6 m a.s.l. at Tihu, and 21.5 m a.s.l. at Prassi. Káivasoo be came iso lated from the sea about 8500 cal yr BP, Loopsoo between 7100 and 6800 cal yr BP, Tihu around 4800 cal yr BP, and Prassi about 2500 cal yr BP. Pres ently gained data from Hiiumaa Is land con firm that the Litorina Sea re gressed con sis tently dur ing the last 8000 years due to pro gres sively de clin ing iso static re bound. The pres ent study is also il lus trated by 3-di men sional palaeogeographic maps of the Hiiumaa Is land devel op ment.

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Late Quaternary Climate Variations Reflected in Baltic Sea Sediments

Cited by 26 publications

References 53 publications

The influence of atmospheric circulation on the mid-Holocene climate of Europe: a data–model comparison

The influence of atmospheric circulation on the mid-Holocene climate of Europe: a data–model comparison

Twenty Years of XRF Core Scanning Marine Sediments: What Do Geochemical Proxies Tell Us?

Relative sea-level changes and development of the Hiiumaa Island, Estonia, during the Holocene

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