Tree-ring isotopes from Araucaria araucana as useful proxies for climate reconstructions

Penchenat, Tiphaine; Daux, Valérie; Ignacio, Mundo; Pierre, Monique; Stiévenard, M.; Ana, Srur; Andreu‐Hayles, Laia; Villalba, Ricardo

doi:10.1016/j.dendro.2022.125979

Cited by 3 publications

(1 citation statement)

References 69 publications

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“…Annual to seasonal information of past hydroclimate variability has been provided by tree-ring δ 18 O records in different regions of South America [19][20][21][22]24,25,[47][48][49][50][51][52][53] . It has been previously demonstrated that Polylepis tarapacana tree-ring δ 18 O chronologies located in the southern Altiplano register local and regional hydroclimate variability.…”

Section: Discussionmentioning

confidence: 99%

A 300-year tree-ring δ18O-based precipitation reconstruction for the South American Altiplano highlights decadal hydroclimate teleconnections

Rodriguez-Caton,

Morales,

Rao

et al. 2024

Commun Earth Environ

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Tropical South American climate is influenced by the South American Summer Monsoon and the El Niño Southern Oscillation. However, assessing natural hydroclimate variability in the region is hindered by the scarcity of long-term instrumental records. Here we present a tree-ring δ18O-based precipitation reconstruction for the South American Altiplano for 1700–2013 C.E., derived from Polylepis tarapacana tree rings. This record explains 56% of December–March instrumental precipitation variability in the Altiplano. The tree-ring δ18O chronology shows interannual (2–5 years) and decadal (~11 years) oscillations that are remarkably consistent with periodicities observed in Altiplano precipitation, central tropical Pacific sea surface temperatures, southern-tropical Andean ice core δ18O and tropical Pacific coral δ18O archives. These results demonstrate the value of annual-resolution tree-ring δ18O records to capture hydroclimate teleconnections and generate robust tropical climate reconstructions. This work contributes to a better understanding of global oxygen-isotope patterns, as well as atmospheric and oceanic processes across the tropics.

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Section: Discussionmentioning

confidence: 99%

A 300-year tree-ring δ18O-based precipitation reconstruction for the South American Altiplano highlights decadal hydroclimate teleconnections

Rodriguez-Caton,

Morales,

Rao

et al. 2024

Commun Earth Environ

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Dendrochronological advances in the tropical and subtropical Americas: Research priorities and future directions

Andreu-Hayles,

Tejedor,

D’Arrigo

et al. 2023

Dendrochronologia

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Multiproxy tree ring reconstruction of glacier mass balance: insights from Pinus cembra trees growing near Silvretta Glacier (Swiss Alps)

Lopez-Saez,

Corona,

Slamova

et al. 2024

Clim. Past

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Abstract. Glacier mass balance reconstructions provide a means of placing relatively short observational records into a longer-term context. Here, we use multiple proxies from Pinus cembra trees from God da Tamangur, combining tree ring anatomy and stable isotope chronologies to reconstruct seasonal glacier mass balance (i.e., winter, summer, and annual mass balance) for the nearby Silvretta Glacier over the last 2 centuries. The combination of tree ring width, radial diameter of earlywood cell lumina, and latewood radial cell wall thickness provides a highly significant reconstruction for summer mass balance, whereas for the winter mass balance, the correlation was less significant but still robust when radial cell lumina were combined with δ18O records. A combination of the reconstructed winter and summer mass balances allows the quantification of the annual mass balance of the Silvretta Glacier for which in situ measurements date back to 1919. Our reconstruction indicates a substantial increase in glacier mass during the first half of the 19th century and an abrupt termination of this phase after the end of the Little Ice Age. Since the 1860s, negative glacier mass balances have been dominant and mass losses accelerate as anthropogenic warming picks up in the Alps.

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Tree-ring isotopes from Araucaria araucana as useful proxies for climate reconstructions

Cited by 3 publications

References 69 publications

A 300-year tree-ring δ18O-based precipitation reconstruction for the South American Altiplano highlights decadal hydroclimate teleconnections

A 300-year tree-ring δ18O-based precipitation reconstruction for the South American Altiplano highlights decadal hydroclimate teleconnections

Dendrochronological advances in the tropical and subtropical Americas: Research priorities and future directions

Multiproxy tree ring reconstruction of glacier mass balance: insights from Pinus cembra trees growing near Silvretta Glacier (Swiss Alps)

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