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Statements

Subject Item

n2:RIV%2F67179843%3A_____%2F14%3A00433074%21RIV15-AV0-67179843

rdf:type

skos:Concept n15:Vysledek

dcterms:description

Tree-ring chronologies of maximum latewood density are most suitable to reconstruct annually resolved summer temperature variations of the late Holocene. The two longest such chronologies have been developed in northern Europe stretching back to the 2nd century BC, and the 5th century AD. We show where similarities between the two chronologies exist, and combine portions of both into a new summer temperature reconstruction for the Common Era. To minimize the transfer of potential biases, we assess the contribution of the candidate reconstructions' measurements, and exclude data (i) from exceptionally young and old trees, and (ii) produced by different laboratory technologies. Our new composite reconstruction reveals warmer conditions during Roman, Medieval and recent times, separated by prolonged cooling during the Migration period and Little Ice Age. Twentieth century warmth, as indicated in one of the existing density records, is reduced in the new reconstruction, also affecting the overall, millennial-scale, cooling trend over the late Holocene (-0.30 degrees C per 1000 years). Due to the reduced biological memory, typical for tree-ring density measurements, the new reconstruction is most suitable for evaluating the rate and speed of abrupt summer cooling following large volcanic eruptions Tree-ring chronologies of maximum latewood density are most suitable to reconstruct annually resolved summer temperature variations of the late Holocene. The two longest such chronologies have been developed in northern Europe stretching back to the 2nd century BC, and the 5th century AD. We show where similarities between the two chronologies exist, and combine portions of both into a new summer temperature reconstruction for the Common Era. To minimize the transfer of potential biases, we assess the contribution of the candidate reconstructions' measurements, and exclude data (i) from exceptionally young and old trees, and (ii) produced by different laboratory technologies. Our new composite reconstruction reveals warmer conditions during Roman, Medieval and recent times, separated by prolonged cooling during the Migration period and Little Ice Age. Twentieth century warmth, as indicated in one of the existing density records, is reduced in the new reconstruction, also affecting the overall, millennial-scale, cooling trend over the late Holocene (-0.30 degrees C per 1000 years). Due to the reduced biological memory, typical for tree-ring density measurements, the new reconstruction is most suitable for evaluating the rate and speed of abrupt summer cooling following large volcanic eruptions

dcterms:title

Northern European summer temperature variations over the Common Era from integrated tree-ring density records Northern European summer temperature variations over the Common Era from integrated tree-ring density records

skos:prefLabel

Northern European summer temperature variations over the Common Era from integrated tree-ring density records Northern European summer temperature variations over the Common Era from integrated tree-ring density records

skos:notation

RIV/67179843:_____/14:00433074!RIV15-AV0-67179843

n3:aktivita

n9:I

n3:aktivity

I

n3:cisloPeriodika

5

n3:dodaniDat

n7:2015

n3:domaciTvurceVysledku

Büntgen, Ulf

n3:druhVysledku

n4:J

n3:duvernostUdaju

n16:S

n3:entitaPredkladatele

n11:predkladatel

n3:idSjednocenehoVysledku

32866

n3:idVysledku

RIV/67179843:_____/14:00433074

n3:jazykVysledku

n12:eng

n3:klicovaSlova

dendrochronology; Finland; late holocene; Sweden; temperature reconstruction

n3:klicoveSlovo

n10:Finland n10:Sweden n10:temperature%20reconstruction n10:dendrochronology n10:late%20holocene

n3:kodStatuVydavatele

GB - Spojené království Velké Británie a Severního Irska

n3:kontrolniKodProRIV

[600A83A6F081]

n3:nazevZdroje

Journal of Quaternary Science

n3:obor

n14:EH

n3:pocetDomacichTvurcuVysledku

1

n3:pocetTvurcuVysledku

5

n3:rokUplatneniVysledku

n7:2014

n3:svazekPeriodika

29

n3:tvurceVysledku

Büntgen, Ulf Timonen, M. Düthorn, E. Krusic, P. J. Esper, J.

n3:wos

000340596900010

s:issn

0267-8179

s:numberOfPages

8

n8:doi

10.1002/jqs.2726