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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Two Millennia of South Atlantic Convergence Zone Variability Reconstructed From Isotopic Proxies

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Author(s):
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Novello, V. F. [1] ; Cruz, F. W. [1] ; Moquet, J. S. [2] ; Vuille, M. [3] ; de Paula, M. S. [1] ; Nunes, D. [1] ; Edwards, R. L. [4] ; Cheng, H. [4, 5] ; Karmann, I. [1] ; Utida, G. ; Strikis, N. M. [6] ; Campos, J. L. P. S. [7]
Total Authors: 12
Affiliation:
[1] Univ Sao Paulo, Inst Geociencias, Sao Paulo - Brazil
[2] Inst Phys Globe Paris, Paris - France
[3] SUNY Albany, Dept Atmospher & Environm Sci, Albany, NY 12222 - USA
[4] Univ Minnesota, Dept Earth Sci, Minneapolis, MN - USA
[5] Xi An Jiao Tong Univ, Inst Global Environm Change, Xian, Shaanxi - Peoples R China
[6] Univ Fed Fluminense, Dept Geoquim, Niteroi, RJ - Brazil
[7] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, Sao Paulo - Brazil
Total Affiliations: 7
Document type: Journal article
Source: Geophysical Research Letters; v. 45, n. 10, p. 5045-5051, MAY 28 2018.
Web of Science Citations: 10
Abstract

Most reconstructions of the South American Monsoon System (SAMS) over the last two millennia are based on delta O-18 records from locations at high-elevation sites in the Andes, which are not influenced by the South Atlantic Convergence Zone (SACZ). Yet the SACZ is a key driver of SAMS variability over much of Brazil. Here we use two new delta O-18 records from speleothems sampled in the central and southwestern portions of the SACZ core to show that the SAMS was not varying in phase over the entire tropical continent during the last two millennia. In fact, speleothem records located to the northeast of the SACZ record precipitation variations that are antiphased with similar records on the opposite side of the SACZ, in particular during the Little Ice Age period, while records close to the core of the SACZ axis show no significant departure from the mean state during this period. (AU)

FAPESP's process: 15/08351-2 - South America monsoon system activity in mid-west Brazil based in speleothems records associated with climate models
Grantee:Valdir Felipe Novello
Support type: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 17/50085-3 - PIRE: climate research education in the Americas using tree-ring speleothem examples (PIRE-CREATE)
Grantee:Francisco William da Cruz Junior
Support type: Research Projects - Thematic Grants
FAPESP's process: 12/03942-4 - South America Monsoon System activity in certer-west of Brazil based in spelothem records associated with other paleoclimate records from South America
Grantee:Valdir Felipe Novello
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 09/12902-3 - Variability of summer monsoon system over the central-west Brazil during Holocene, based on paleoclimate records from speleothems
Grantee:Marcos Saito de Paula
Support type: Scholarships in Brazil - Master
FAPESP's process: 12/01187-4 - A calibration study in Central Brazil caves: implications for the paleoclimate inferences from speleothem records
Grantee:Ivo Karmann
Support type: Regular Research Grants
FAPESP's process: 16/00299-4 - Geochemistry of vadose percolation in karst systems: implications for paleoclimatic interpretations os speleothem records
Grantee:Ivo Karmann
Support type: Regular Research Grants
FAPESP's process: 14/10095-1 - South America monsoon system activity in certer-west of Brazil based in spelothem records associated with other paleoclimate records from South America
Grantee:Valdir Felipe Novello
Support type: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 17/23687-2 - Expansion of the paleoclimate records of speleothems collected in the mid-west of Brazil
Grantee:Valdir Felipe Novello
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 12/50260-6 - Structure and evolution of the Amazonian biota and its environment: an integrative approach
Grantee:Lúcia Garcez Lohmann
Support type: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 16/15807-5 - Paleoclimate and paleoenvironmental reconstructions over the last glacial period in the mid-west Brazil
Grantee:Valdir Felipe Novello
Support type: Scholarships in Brazil - Post-Doctorate