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BG | Articles | Volume 17, issue 18
Biogeosciences, 17, 4559–4570, 2020
https://doi.org/10.5194/bg-17-4559-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 17, 4559–4570, 2020
https://doi.org/10.5194/bg-17-4559-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 18 Sep 2020

Research article | 18 Sep 2020

Chemical destaining and the delta correction for blue intensity measurements of stained lake subfossil trees

Feng Wang et al.

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Anchukaitis, K. J., Wilson, R., Briffa, K. R., Büntgen, U., Cook, E. R., D'Arrigo, R., Davi, N., Esper, J., Frank, D., Gunnarson, B. E., Hegerl, G., Helama, S., Klesse, S., Krusic, P. J., Linderholm, H. W., Myglan, V., Osborn, T. J., Zhang, P., Rydval, M., Schneider, L., Schurer, A., Wiles, G., and Zorita, E.: Last millennium Northern Hemisphere summer temperatures from tree rings: Part II, spatially resolved reconstructions, Quat. Sci. Rev., 163, 1–22, https://doi.org/10.1016/j.quascirev.2017.02.020, 2017. 
Anschutz, P., Dedieu, K., Desmazes, F., and Chaillou, G.: Speciation, oxidation state, and reactivity of particulate manganese in marine sediments, Chem. Geol., 218, 265–279, https://doi.org/10.1016/j.chemgeo.2005.01.008, 2005. 
Arseneault, D., Dy, B., Gennaretti, F., Autin, J., and Bégin, Y.: Developing millennial tree ring chronologies in the fire-prone North American boreal forest, J. Quat. Sci., 28, 283–292, https://doi.org/10.1002/jqs.2612, 2013. 
Björklund, J., Gunnarson, B. E., Seftigen, K., Zhang, P., and Linderholm, H. W.: Using adjusted Blue Intensity data to attain high-quality summer temperature information: A case study from Central Scandinavia, The Holocene, 25, 547–556, https://doi.org/10.1177/0959683614562434, 2015. 
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Wood stain is challenging the use of the blue intensity technique for dendroclimatic reconstructions. Using stained subfossil trees from eastern Canadian lakes, we compared chemical destaining approaches with the delta blue mathematical correction of blue intensity data. Although no chemical treatment was completely efficient, the delta blue method is unaffected by the staining problem and thus is promising for climate reconstructions based on lake subfossil material.
Wood stain is challenging the use of the blue intensity technique for dendroclimatic...
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