Subfossil trees suggest enhanced Mediterranean hydroclimate variability at the onset of the Younger Dryas

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F18%3A00495823" target="_blank" >RIV/86652079:_____/18:00495823 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/18:00113400

Result on the web

<a href="http://dx.doi.org/10.1038/s41598-018-32251-2" target="_blank" >http://dx.doi.org/10.1038/s41598-018-32251-2</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41598-018-32251-2" target="_blank" >10.1038/s41598-018-32251-2</a>

Result language

angličtina

Original language name

Subfossil trees suggest enhanced Mediterranean hydroclimate variability at the onset of the Younger Dryas

Original language description

Nearly 13,000 years ago, the warming trend into the Holocene was sharply interrupted by a reversal to near glacial conditions. Climatic causes and ecological consequences of the Younger Dryas (YD) have been extensively studied, however proxy archives from the Mediterranean basin capturing this period are scarce and do not provide annual resolution. Here, we report a hydroclimatic reconstruction from stable isotopes (delta O-18, delta C-13) in subfossil pines from southern France. Growing before and during the transition period into the YD (12 900-12 600 cal BP), the trees provide an annually resolved, continuous sequence of atmospheric change. Isotopic signature of tree sourcewater (delta O-18(sw)) and estimates of relative air humidity were reconstructed as a proxy for variations in air mass origin and precipitation regime. We find a distinct increase in inter-annual variability of sourcewater isotopes (delta O-18(sw)), with three major downturn phases of increasing magnitude beginning at 12 740 cal BP. The observed variation most likely results from an amplified intensity of North Atlantic (low delta O-18(sw)) versus Mediterranean (high delta O-18(sw)) precipitation. This marked pattern of climate variability is not seen in records from higher latitudes and is likely a consequence of atmospheric circulation oscillations at the margin of the southward moving polar front.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/GA17-22102S" target="_blank" >GA17-22102S: 2000 years of PALeoclimatology and Ecology from Oak stable isotopes in the Czech Republic (PALEO)</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Scientific Reports

ISSN

2045-2322

e-ISSN

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Volume of the periodical

8

Issue of the periodical within the volume

sep

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

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UT code for WoS article

000444801300023

EID of the result in the Scopus database

2-s2.0-85053457781