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Different maximum latewood density and blue intensity measurements techniques reveal similar results
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SYSNO ASEP 0496018 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Different maximum latewood density and blue intensity measurements techniques reveal similar results Author(s) Kaczka, R. J. (PL)
Spyt, B. (PL)
Janecka, K. (DE)
Beil, I. (DE)
Büntgen, Ulf (UEK-B) RID, ORCID, SAI
Scharnweber, T. (DE)
Nievergelt, D. (CH)
Wilmking, M. (DE)Number of authors 8 Source Title Dendrochronologia. - : Elsevier - ISSN 1125-7865
Roč. 49, JUN (2018), s. 94-101Number of pages 8 s. Language eng - English Country IT - Italy Keywords summer temperature-variations ; tree-ring chronologies ; wood density ; paleoclimate proxy ; giant mountains ; picea-abies ; climate ; growth ; reconstruction ; width ; Climate reconstruction ; Dendrochronology ; Maximum Wood Density ; Blue intensity ; Norway spruce ; Tatra Mountains Subject RIV DB - Geology ; Mineralogy OECD category Physical geography R&D Projects LO1415 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UEK-B - RVO:86652079 UT WOS 000433995400011 EID SCOPUS 85044724653 DOI 10.1016/j.dendro.2018.03.005 Annotation Annually resolved and absolutely dated Maximum Latewood Density (MXD) and Blue Intensity (BI) measurements are frequently used for reconstructing summer temperature variability over the last centuries to millennia. A direct comparison of the outcome of both methods using similar material is needed due to how quickly this method is being adopted. The application of slightly different measuring systems (hardware) and analysis tools (software) in tandem with different wood samples and preparation procedures further challenges any straightforward assessment. Here we process 26 Norway spruce samples from the upper timberline in the Polish Tatra Mountains with the six most frequently used MXD and BI applications. Although offset is found in the raw MXD and BI data (0.04-0.13 g/cm(3) and 0.45-1.58 dimensionless blue intensity), interannual and longer-term fluctuations are significantly (p < 0.01) positively correlated between all MXD and BI time-series. Our results emphasize the potential of faster and cheaper, as well as overall more user-friendly techniques to generate reliable MXD surrogates for high-frequency dendroclimatological studies. Although the correlations between MXD and BI were lower than within MXD and BI, the results of growth-climate response performed for both proxies show only marginal differences. The obtained level-offset further questions the suitability of joining different density surrogates for developing long-term composite chronologies to reconstruct low-frequency climate variability. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2019
Number of the records: 1