Articles | Volume 20, issue 16
https://doi.org/10.5194/bg-20-3481-2023
https://doi.org/10.5194/bg-20-3481-2023
Research article
 | 
21 Aug 2023
Research article |  | 21 Aug 2023

Experiments of the efficacy of tree ring blue intensity as a climate proxy in central and western China

Yonghong Zheng, Huanfeng Shen, Rory Abernethy, and Rob Wilson

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Cited articles

Anchukaitis, K. J., Wilson, R., Briffa, K. R., Büntgen, U., Cook, E. R., D'Arrigo, R., Davi, N., Esper, J., Frank, D., and Gunnarson, B.: Last millennium Northern Hemisphere summer temperatures from tree rings: Part II, spatially resolved reconstructions, Quaternary Sci. Rev., 163, 1–22, https://doi.org/10.1016/j.quascirev.2017.02.020, 2017. 
Babst, F., Frank, D., Büntgen, U., Nievergelt, D., and Esper, J.: Effect of sample preparation and scanning resolution on the Blue Reflectance of Picea abies, Trace Proc., 7, 188–195, https://doi.org/10.2312/GFZ.b103-09038, 2009. 
Begović, K., Rydval, M., Mikac, S., Čupić, S., Svobodova, K., Mikoláš, M., Kozak, D., Kameniar, O., Frankovič, M., and Pavlin, J.: Climate-growth relationships of Norway Spruce and silver fir in primary forests of the Croatian Dinaric mountains, Agr. Forest Meteorol., 288, 108000, https://doi.org/10.1016/j.agrformet.2020.108000, 2020. 
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, Holocene, 25, 547–556, https://doi.org/10.1177/0959683614562434, 2015. 
Björklund, J., von Arx, G., Nievergelt, D., Wilson, R., Van den Bulcke, J., Günther, B., Loader, N., Rydval, M., Fonti, P., and Scharnweber, T.: Scientific merits and analytical challenges of tree-ring densitometry, Rev. Geophys., 57, 1224–1264, https://doi.org/10.1029/2019RG000642, 2019. 
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Short summary
Investigations in central and western China show that tree ring inverted latewood intensity expresses a strong positive relationship with growing-season temperatures, indicating exciting potential for regions south of 30° N that are traditionally not targeted for temperature reconstructions. Earlywood BI also shows good potential to reconstruct hydroclimate parameters in some humid areas and will enhance ring-width-based hydroclimate reconstructions in the future.
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