Tree rings and rainfall in the equatorial Amazon

Daniela Granato-Souza, David W. Stahle, Ana Carolina Barbosa, Song Feng, Max C.A. Torbenson, Gabriel de Assis Pereira, Jochen Schöngart, Joao Paulo Barbosa, Daniel Griffin

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The Amazon basin is a global center of hydroclimatic variability and biodiversity, but there are only eight instrumental rainfall stations with continuous records longer than 80 years in the entire basin, an area nearly the size of the coterminous US. The first long moisture-sensitive tree-ring chronology has been developed in the eastern equatorial Amazon of Brazil based on dendrochronological analysis of Cedrela cross sections cut during sustainable logging operations near the Rio Paru. The Rio Paru chronology dates from 1786 to 2016 and is significantly correlated with instrumental precipitation observations from 1939 to 2016. The strength and spatial scale of the precipitation signal vary during the instrumental period, but the Rio Paru chronology has been used to develop a preliminary reconstruction of February to November rainfall totals from 1786 to 2016. The reconstruction is related to SSTs in the Atlantic and especially the tropical Pacific, similar to the stronger pattern of association computed for the instrumental rainfall data from the eastern Amazon. The tree-ring data estimate extended drought and wet episodes in the mid- to late-nineteenth century, providing a valuable, long-term perspective on the moisture changes expected to emerge over the Amazon in the coming century due to deforestation and anthropogenic climate change.

Original languageEnglish (US)
Pages (from-to)1857-1869
Number of pages13
JournalClimate Dynamics
Volume52
Issue number3-4
DOIs
StatePublished - Feb 15 2019

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tree ring
chronology
rainfall
moisture
nineteenth century
basin
deforestation
sea surface temperature
cross section
drought
biodiversity
climate change

Keywords

  • Cedrela
  • ENSO
  • Equatorial Amazon
  • Precipitation
  • Sea surface temperature
  • Tree rings

Cite this

Granato-Souza, D., Stahle, D. W., Barbosa, A. C., Feng, S., Torbenson, M. C. A., de Assis Pereira, G., ... Griffin, D. (2019). Tree rings and rainfall in the equatorial Amazon. Climate Dynamics, 52(3-4), 1857-1869. https://doi.org/10.1007/s00382-018-4227-y

Tree rings and rainfall in the equatorial Amazon. / Granato-Souza, Daniela; Stahle, David W.; Barbosa, Ana Carolina; Feng, Song; Torbenson, Max C.A.; de Assis Pereira, Gabriel; Schöngart, Jochen; Barbosa, Joao Paulo; Griffin, Daniel.

In: Climate Dynamics, Vol. 52, No. 3-4, 15.02.2019, p. 1857-1869.

Research output: Contribution to journalArticle

Granato-Souza, D, Stahle, DW, Barbosa, AC, Feng, S, Torbenson, MCA, de Assis Pereira, G, Schöngart, J, Barbosa, JP & Griffin, D 2019, 'Tree rings and rainfall in the equatorial Amazon', Climate Dynamics, vol. 52, no. 3-4, pp. 1857-1869. https://doi.org/10.1007/s00382-018-4227-y
Granato-Souza D, Stahle DW, Barbosa AC, Feng S, Torbenson MCA, de Assis Pereira G et al. Tree rings and rainfall in the equatorial Amazon. Climate Dynamics. 2019 Feb 15;52(3-4):1857-1869. https://doi.org/10.1007/s00382-018-4227-y
Granato-Souza, Daniela ; Stahle, David W. ; Barbosa, Ana Carolina ; Feng, Song ; Torbenson, Max C.A. ; de Assis Pereira, Gabriel ; Schöngart, Jochen ; Barbosa, Joao Paulo ; Griffin, Daniel. / Tree rings and rainfall in the equatorial Amazon. In: Climate Dynamics. 2019 ; Vol. 52, No. 3-4. pp. 1857-1869.
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