Climate signals in carbon and oxygen isotope ratios of Pinus cembra tree-ring cellulose from the Calimani Mountains, Romania
Abstract We analyze annually resolved tree-ring stable carbon (δ13C) and oxygen (δ18O) isotopic chronologies from Swiss stone pine (Pinus cembra L.) in Romania. The chronologies cover the period between 1876 and 2012 and integrate data from four individual trees from the Calimani Mts in the easter...
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Online Access: | https://epic.awi.de/id/eprint/50436/ https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/joc.6349 https://hdl.handle.net/10013/epic.28abbc4f-0e8d-43a1-b821-c67859e8f622 |
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ftawi:oai:epic.awi.de:50436 2023-05-15T17:34:49+02:00 Climate signals in carbon and oxygen isotope ratios of Pinus cembra tree-ring cellulose from the Calimani Mountains, Romania Nagavciuc, Viorica Kern, Zoltan Ionita, Monica Hartl, Claudia Konter, Oliver Esper, Jan Popa, Ionel 2019-10-10 https://epic.awi.de/id/eprint/50436/ https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/joc.6349 https://hdl.handle.net/10013/epic.28abbc4f-0e8d-43a1-b821-c67859e8f622 unknown Nagavciuc, V. , Kern, Z. , Ionita, M. orcid:0000-0001-8240-4380 , Hartl, C. , Konter, O. , Esper, J. and Popa, I. (2019) Climate signals in carbon and oxygen isotope ratios of Pinus cembra tree-ring cellulose from the Calimani Mountains, Romania , International Journal of Climatology . doi:10.1002/joc.6349 <https://doi.org/10.1002/joc.6349> , hdl:10013/epic.28abbc4f-0e8d-43a1-b821-c67859e8f622 EPIC3International Journal of Climatology, ISSN: 1097-0088 Article isiRev 2019 ftawi https://doi.org/10.1002/joc.6349 2021-12-24T15:45:01Z Abstract We analyze annually resolved tree-ring stable carbon (δ13C) and oxygen (δ18O) isotopic chronologies from Swiss stone pine (Pinus cembra L.) in Romania. The chronologies cover the period between 1876 and 2012 and integrate data from four individual trees from the Calimani Mts in the eastern Carpathians where climatic records are scarce and starts only from 1961. Calibration trials show that the δ13C values correlate with local April-May relative humidity and with regional to larger scale (European) summer precipitation. δ18O correlates significantly with local relative humidity, cloud cover, maximum temperature, as well as European scale drought conditions. In all cases, the climate effects on δ13C values are weaker than those recorded in the δ18O data, with the latter revealing a tendency towards higher (lower) values of δ18O during extremely dry (wet) years. The most striking signal, however, is the strong link between the interannual δ18O variability recorded in the Calimani Mts and large-scale circulation patterns associated with North Atlantic and Mediteraneean Sea sea surface temperatures. High (low) values of δ18O occur in association with a high (low) pressure system over the central and eastern part of Europe and with a significantly warmer (colder) Mediterranean Sea surface temperature. These results demonstrate the possibility of using tree ring oxygen isotopes from the eastern Carpathians to reconstruct regional drought conditions in eastern Europe on long-term time scales and larger scale circulation dynamics over the pre-instrumental periods. Article in Journal/Newspaper North Atlantic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) International Journal of Climatology 40 5 2539 2556 |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Abstract We analyze annually resolved tree-ring stable carbon (δ13C) and oxygen (δ18O) isotopic chronologies from Swiss stone pine (Pinus cembra L.) in Romania. The chronologies cover the period between 1876 and 2012 and integrate data from four individual trees from the Calimani Mts in the eastern Carpathians where climatic records are scarce and starts only from 1961. Calibration trials show that the δ13C values correlate with local April-May relative humidity and with regional to larger scale (European) summer precipitation. δ18O correlates significantly with local relative humidity, cloud cover, maximum temperature, as well as European scale drought conditions. In all cases, the climate effects on δ13C values are weaker than those recorded in the δ18O data, with the latter revealing a tendency towards higher (lower) values of δ18O during extremely dry (wet) years. The most striking signal, however, is the strong link between the interannual δ18O variability recorded in the Calimani Mts and large-scale circulation patterns associated with North Atlantic and Mediteraneean Sea sea surface temperatures. High (low) values of δ18O occur in association with a high (low) pressure system over the central and eastern part of Europe and with a significantly warmer (colder) Mediterranean Sea surface temperature. These results demonstrate the possibility of using tree ring oxygen isotopes from the eastern Carpathians to reconstruct regional drought conditions in eastern Europe on long-term time scales and larger scale circulation dynamics over the pre-instrumental periods. |
format |
Article in Journal/Newspaper |
author |
Nagavciuc, Viorica Kern, Zoltan Ionita, Monica Hartl, Claudia Konter, Oliver Esper, Jan Popa, Ionel |
spellingShingle |
Nagavciuc, Viorica Kern, Zoltan Ionita, Monica Hartl, Claudia Konter, Oliver Esper, Jan Popa, Ionel Climate signals in carbon and oxygen isotope ratios of Pinus cembra tree-ring cellulose from the Calimani Mountains, Romania |
author_facet |
Nagavciuc, Viorica Kern, Zoltan Ionita, Monica Hartl, Claudia Konter, Oliver Esper, Jan Popa, Ionel |
author_sort |
Nagavciuc, Viorica |
title |
Climate signals in carbon and oxygen isotope ratios of Pinus cembra tree-ring cellulose from the Calimani Mountains, Romania |
title_short |
Climate signals in carbon and oxygen isotope ratios of Pinus cembra tree-ring cellulose from the Calimani Mountains, Romania |
title_full |
Climate signals in carbon and oxygen isotope ratios of Pinus cembra tree-ring cellulose from the Calimani Mountains, Romania |
title_fullStr |
Climate signals in carbon and oxygen isotope ratios of Pinus cembra tree-ring cellulose from the Calimani Mountains, Romania |
title_full_unstemmed |
Climate signals in carbon and oxygen isotope ratios of Pinus cembra tree-ring cellulose from the Calimani Mountains, Romania |
title_sort |
climate signals in carbon and oxygen isotope ratios of pinus cembra tree-ring cellulose from the calimani mountains, romania |
publishDate |
2019 |
url |
https://epic.awi.de/id/eprint/50436/ https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/joc.6349 https://hdl.handle.net/10013/epic.28abbc4f-0e8d-43a1-b821-c67859e8f622 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
EPIC3International Journal of Climatology, ISSN: 1097-0088 |
op_relation |
Nagavciuc, V. , Kern, Z. , Ionita, M. orcid:0000-0001-8240-4380 , Hartl, C. , Konter, O. , Esper, J. and Popa, I. (2019) Climate signals in carbon and oxygen isotope ratios of Pinus cembra tree-ring cellulose from the Calimani Mountains, Romania , International Journal of Climatology . doi:10.1002/joc.6349 <https://doi.org/10.1002/joc.6349> , hdl:10013/epic.28abbc4f-0e8d-43a1-b821-c67859e8f622 |
op_doi |
https://doi.org/10.1002/joc.6349 |
container_title |
International Journal of Climatology |
container_volume |
40 |
container_issue |
5 |
container_start_page |
2539 |
op_container_end_page |
2556 |
_version_ |
1766133772202278912 |