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

doi:10.1007/s00382-018-4227-y

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

Geography

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37 Scopus citations

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 language	English (US)
Pages (from-to)	1857-1869
Number of pages	13
Journal	Climate Dynamics
Volume	52
Issue number	3-4
DOIs	https://doi.org/10.1007/s00382-018-4227-y
State	Published - Feb 15 2019

Bibliographical note

Funding Information:
Acknowledgements This study has been funded by the U.S. National Science Foundation (Grant Number AGS-1501321) and is based on the collaboration between the Federal University at Lavras, the Brazilian National Institute of Amazonian Research (INPA) at Manaus, the Argentine Institute of Snow Research, Glaciology, and Environmental Sciences (IANIGLA) in Mendoza, and the University of Arkansas, Fayetteville. D. Granato-Souza was funded in Brazil by the Coordination for the Improvement of Higher Education Personnel (CAPES). We gratefully acknowledge the extensive logistical support and wood donations from Norte Energia (Gilberto Veronese, Miguel Lanzuolo de Paula, Daniel Angelo, Elmar Araújo, José Maria, especially, Jailton Rodriguez Bajos), LEME Energia, the Hudson logging company, and Sr. Evandro Dalmaso and Sra. Eliane Dalmaso of the CEMAL logging firm for their generous logistical support and hospitality. GPCC Precipitation data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.esrl.noaa.gov/psd/. COBE SST data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.esrl.noaa.gov/psd/.

Funding Information:
This study has been funded by the U.S. National Science Foundation (Grant Number AGS-1501321) and is based on the collaboration between the Federal University at Lavras, the Brazilian National Institute of Amazonian Research (INPA) at Manaus, the Argentine Institute of Snow Research, Glaciology, and Environmental Sciences (IANIGLA) in Mendoza, and the University of Arkansas, Fayetteville. D. Granato-Souza was funded in Brazil by the Coordination for the Improvement of Higher Education Personnel (CAPES). We gratefully acknowledge the extensive logistical support and wood donations from Norte Energia (Gilberto Veronese, Miguel Lanzuolo de Paula, Daniel Angelo, Elmar Ara?jo, Jos? Maria, especially, Jailton Rodriguez Bajos), LEME Energia, the Hudson logging company, and Sr. Evandro Dalmaso and Sra. Eliane Dalmaso of the CEMAL logging firm for their generous logistical support and hospitality. GPCC Precipitation data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.esrl.noaa.gov/psd/. COBE SST data provided by the NOAA/OAR/ESRL PSD, Boulder, Colorado, USA, from their Web site at http://www.esrl.noaa.gov/psd/. The indices of the Atlantic Meridional Mode were provided by NOAA at https://www.esrl.noaa.gov/psd/data/timeseries/monthly/AMM/. We thank two reviewers for suggestions that helped improve this article. We also acknowledge the data provided by the Climatic Research Unit, University of East Anglia, and the use of the KNMI Climate Explorer. The data developed for this article have been contributed to the International Tree-Ring Data Bank at the NOAA Paleoclimatology Program, including all tree-ring data, the instrumental four-station precipitation data, and the derived reconstruction: https://www.ncdc.noaa.gov/data-access/paleoclimatology-data.

Funding Information:
Funding This study was funded by U.S. National Science Foundation (Grant number AGS-1501321) to the University of Arkansas, and by the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) to the Federal University of Lavras.

Publisher Copyright:
© 2018, Springer-Verlag GmbH Germany, part of Springer Nature.

Keywords

Cedrela
ENSO
Equatorial Amazon
Precipitation
Sea surface temperature
Tree rings

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s00382-018-4227-y

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Cite this

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title = "Tree rings and rainfall in the equatorial Amazon",

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.",

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AU - Schöngart, Jochen

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Tree rings and rainfall in the equatorial Amazon

Abstract

Bibliographical note

Keywords

UN SDGs

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