Year: 2025
Type: article
Abstract: Recent years have seen strong droughts and floods in the Amazon basin, the largest center of atmospheric convection on land. To assess to what degree these events are extreme in a historical perspective requires accurate and long‐term climate data, which are generally lacking for this part of the world. Here, we developed a 131‐year oxygen isotope chronology from exactly dated tree rings of Cedrela odorata from the eastern Amazon Basin. The chronology (1885–2016) correlates strongly with observed wet‐season rainfall totals ( r = −0.71, 1951–2016) and stream discharge over the eastern equatorial Amazon. In contrast to oxygen isotope chronologies further inland that record basin‐wide rainfall, our new record provides a good rainfall proxy for the eastern Amazon basin alone and shows that extreme precipitation events are also driven by ENSO.
Source: Geophysical Research Letters
DOI: 10.1029/2025gl116731
Authors: L. Guimarães‐Pereira, A. C. Barbosa, D. W. Stahle, M. C. A. Torbenson, D. Granato‐Souza, C. L. Farrapo, E. Gloor, R. Brienen, A. Boom
Language: English
Topic: Tree-ring climate responses
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Climate action
Open Access status: gold
Estimated APC paid: $3,190
Awards: Testing novel isotope approaches to reconstruct past precipitation regimes in the Amazon, P2C2: Pan-American Precipitation Extremes and Multi-Decadal Regimes Reconstructed with Tree Ring Chronologies from the Amazon, EXTREMOS DE PRECIPITAÇÃO PAN-AMERICANOS E REGIMES MULTI-DECADAL RECONSTRUÍDOS COM CRONOLOGIAS DE ANÉIS DE ÁRVORES DA AMAZÔNIA, Collaborative Research: Precipitation and Streamflow Reconstruction and Analysis in the Amazon River Basin, G3921968898, Collaborative Research: Precipitation and Streamflow Reconstruction and Analysis in the Amazon River Basin
OpenAlex ID: W7082000037