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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.)

Ocean-atmosphere interactions over the western South Atlantic during Heinrich stadials

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Author(s):
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Venancio, I. M. [1, 2, 3] ; Shimizu, M. H. [1] ; Santos, T. P. [2] ; Lessa, D. O. [2] ; Dias, B. B. [2] ; Chiessi, C. M. [4] ; Mulitza, S. [5] ; Kuhnert, H. [5] ; Tiedemann, R. [6] ; Vahlenkamp, M. [5] ; Bickert, T. [5] ; Belem, A. L. [3] ; Sampaio, G. [1] ; Albuquerque, A. L. S. [2] ; Nobre, C. [7]
Total Authors: 15
Affiliation:
[1] Natl Inst Space Res INPE, Ctr Weather Forecasting & Climate Studies CPTEC, Cachoeira Paulista - Brazil
[2] Univ Fed Fluminense, Programa Geociencias Geoquim, Niteroi, RJ - Brazil
[3] Univ Fed Fluminense, Programa Posgrad Dinam Oceanos & Terra, Niteroi, RJ - Brazil
[4] Univ Sao Paulo, Sch Arts Sci & Humanities, Sao Paulo - Brazil
[5] Univ Bremen, MARUM Ctr Marine Environm Sci, Bremen - Germany
[6] Alfred Wegener Inst Polar & Marine Res, Bremerhaven - Germany
[7] Univ Sao Paulo, Inst Adv Studies, Sao Paulo - Brazil
Total Affiliations: 7
Document type: Journal article
Source: GLOBAL AND PLANETARY CHANGE; v. 195, DEC 2020.
Web of Science Citations: 0
Abstract

Slowdowns of the Atlantic meridional overturning circulation during Heinrich stadials (HS) caused reductions in cross-equatorial heat transport, southward shifts of the Intertropical Convergence Zone and intensification of precipitation over eastern tropical South America. While these changes are well described, the associated spatial sea surface temperature (SST) patterns are still unclear. Here, we analyze proxy data to assess changes in ocean-atmosphere interactions during HS over the western South Atlantic. Our SST proxy records show contrasting patterns between the tropical (warming) and the subtropical (no change) western South Atlantic during HS. We propose that the distinct SST behavior in the subtropics was associated with the cloud cover effect of the South Atlantic Convergence Zone over the upper ocean. (AU)

FAPESP's process: 18/15123-4 - Past perspectives on tipping elements of the climate system: the Amazon Rainforest and the Atlantic Meridional Overturning Circulation (PPTEAM)
Grantee:Cristiano Mazur Chiessi
Support Opportunities: Research Grants - Research Program on Global Climate Change - Young Investigators - Phase 2