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LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00007522naa a2200733 4500
001oai:DiVA.org:nrm-4574
003SwePub
008211216s2021 | |||||||||||000 ||eng|
009oai:DiVA.org:su-200899
009oai:DiVA.org:umu-189113
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-45742 URI
0247 a https://doi.org/10.1016/j.quascirev.2021.1072502 DOI
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-2008992 URI
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1891132 URI
040 a (SwePub)nrmd (SwePub)sud (SwePub)umu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Katrantsiotis, Christosu Umeå universitet,Institutionen för idé- och samhällsstudier,Archaeology Laboratory, Department of Historical, Philosophical and Religious Studies, Umeå University4 aut0 (Swepub:umu)chka0165
2451 0a Seasonal variability in temperature trends and atmospheric circulation systems during the Eemian (Last Interglacial) based on n-alkanes hydrogen isotopes from Northern Finland
264 1a Amsterdam :b Elsevier,c 2021
338 a electronic2 rdacarrier
500 a This research was primarily financed by the Bolin Center for Climate Research, Stockholm University. KFH further acknowledges funding from Swedish Nuclear Fuel and Waste Management Company (SKB); JSS from the Academy of Finland (project 1310649). We acknowledge Anna Hägglund in particular for assistance while operating the GC-IRMS, Klara Hajnal with the assistance of extracting n-alkanes and the preparations of samples for bulk isotope analysis and Heike Siegmund for the assistance of bulk isotope analysis at the Stable Isotope Laboratory at Stockholm University.
520 a The Last Interglacial warm period, the Eemian (ca. 130-116 thousand years ago), serves as a reference for projected future climate in a warmer world. However, there is a limited understanding of the seasonal characteristics of interglacial climate dynamics, especially in high latitude regions. In this study, we aimto provide new insights into seasonal trends in temperature and moisture source location, linked to shifts in atmospheric circulation patterns, for northern Fennoscandia during the Eemian. Our study is based on the distribution and stable hydrogen isotope composition (dD) of n-alkanes in a lake sediment sequence from the Sokli paleolake in NE Finland, placed in a multi-proxy framework. The dD values of predominantly macrophyte-derived mid-chain n-alkanes are interpreted to reflect lake water dD variability influenced by winter precipitation dD (dDprec), ice cover duration and deuterium (D)-depleted meltwater. The dD values of terrestrial plant-derived long-chain n-alkanes primarily reflect soil water dD variability modulated by summer dDprec and by the evaporative enrichment of soil and leaf water. The dDprec variability in our study area is mostly attributed to the temperature effect and the moisture source location linked to the relative dominance between D-depleted continental and polar air masses and Denriched North Atlantic air masses. The biomarker signal further corroborates earlier diatom-based studies and pollen-inferred January and July temperature reconstructions from the same sediment sequence. Three phases of climatic changes can be identified that generally follow the secular variationsin seasonal insolation: (i) an early warming trend succeeded by a period of strong seasonality (ii) a midoptimum phase with gradually decreased seasonality and cooler summers, and (iii) a late climatic instability with a cooling trend. Superimposed on this trend, two abrupt cooling events occur in the early and late Eemian. The Sokli dD variability is generally in good agreement with other North Atlantic and Siberian records, reflecting major changes in the atmospheric circulation patterns during the Eemian as a response to orbital and oceanic forcings.
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Annan geovetenskap och miljövetenskap0 (SwePub)105992 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Other Earth and Related Environmental Sciences0 (SwePub)105992 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskap0 (SwePub)1052 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciences0 (SwePub)1052 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geologi0 (SwePub)105042 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geology0 (SwePub)105042 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Klimatforskning0 (SwePub)105012 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Climate Research0 (SwePub)105012 hsv//eng
650 7a NATURVETENSKAPx Geovetenskap och miljövetenskapx Geokemi0 (SwePub)105062 hsv//swe
650 7a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geochemistry0 (SwePub)105062 hsv//eng
653 a Eemian
653 a MIS 5e
653 a Last Interglacial
653 a Biomarkers
653 a Hydrogen isotopes
653 a Climate variability
653 a Seasonality changes
653 a Finland
653 a Ecosystems and species history
653 a Ekosystem och arthistoria
653 a The changing Earth
653 a Den föränderliga jorden
653 a Quarternary Geology
7001 a Norström, Elinu Stockholms universitet,Institutionen för naturgeografi,Department of Physical Geography and the Bolin Centre for Climate Research, Stockholm University, 106 91, Stockholm, Sweden4 aut0 (Swepub:su)norst
7001 a Smittenberg, Rienk H.u Stockholms universitet,Institutionen för geologiska vetenskaper,Department of Geological Sciences and the Bolin Centre for Climate Research, Stockholm University, 10691, Stockholm, Sweden4 aut0 (Swepub:su)rsmit
7001 a Salonen, J. Sakariu Department of Geosciences and Geography, P.O. Box 64, 00014, University of Helsinki, Finland4 aut
7001 a Plikk, Annau The Archaeologists, National Historical Museums, SE, 126 53, Hägersten, Sweden4 aut
7001 a Helmens, Karinu Naturhistoriska riksmuseet,Enheten för paleobiologi,Swedish Museum of Natural History, P.O. Box 50007, 10405, Stockholm, Sweden and Värriö Research Station, Institute for Atmospheric and Earth System Research INAR / Physics, P.O. Box 64, 00014, University of Helsinki, Finland4 aut0 (Swepub:nrm)karihelm
7001 a anon, anon4 aut
7102 a Umeå universitetb Institutionen för idé- och samhällsstudier4 org
7730 t Quaternary Science Reviewsd Amsterdam : Elsevierg 273, s. 107250-107250q 273<107250-107250x 0277-3791x 1873-457X
8564 u https://doi.org/10.1016/j.quascirev.2021.107250
8564 u https://nrm.diva-portal.org/smash/get/diva2:1620576/FULLTEXT01.pdfx primaryx Raw objecty fulltext:postprint
8564 u https://doi.org/10.1016/j.quascirev.2021.107250
8564 u https://umu.diva-portal.org/smash/get/diva2:1608678/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:nrm:diva-4574
8564 8u https://doi.org/10.1016/j.quascirev.2021.107250
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-200899
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-189113

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