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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.)

Sea-surface temperature reconstruction of the Quaternary western South Atlantic: New planktonic foraminiferal correlation function

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Author(s):
Garcia Chapori, Natalia [1] ; Chiessi, Cristiano Mazur [2] ; Bickert, Torsten [3] ; Laprida, Cecilia [1]
Total Authors: 4
Affiliation:
[1] Univ Buenos Aires, Fac Ciencias Exactas & Nat, CONICET, IDEAN, Dept Ciencias Geol, Buenos Aires, DF - Argentina
[2] Univ Sao Paulo, Sch Arts Sci & Humanities, BR-03828000 Sao Paulo, SP - Brazil
[3] Univ Bremen, MARUM, Ctr Marine Environm Sci, D-28359 Bremen - Germany
Total Affiliations: 3
Document type: Journal article
Source: PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY; v. 425, p. 67-75, MAY 1 2015.
Web of Science Citations: 3
Abstract

We provide a new multivariate calibration-function based on South Atlantic modern assemblages of planktonic foraminifera and atlas water column parameters from the Antarctic Circumpolar Current to the Subtropical Gyre and tropical warm waters (i.e., 60 degrees S to 0 degrees S). Therefore, we used a dataset with the abundance pattern of 35 taxonomic groups of planktonic foraminifera in 141 surface sediment samples. Five factors were taken into consideration for the analysis, which account for 93% of the total variance of the original data representing the regional main oceanographic fronts. The new calibration-function F141-35-5 enables the reconstruction of Late Quaternary summer and winter sea-surface temperatures with a statistical error of similar to 0.5 degrees C. Our function was verified by its application to a sediment core extracted from the western South Atlantic. The downcore reconstruction shows negative anomalies in sea-surface temperatures during the early-mid Holocene and temperatures within the range of modern values during the late Holocene. This pattern is consistent with available reconstructions. (C) 2015 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 12/17517-3 - Response of the Western Atlantic Ocean to changes in the Atlantic meridional overturning circulation: from millennial to seasonal variability
Grantee:Cristiano Mazur Chiessi
Support Opportunities: Research Program on Global Climate Change - Young Investigators