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Response of the Western Atlantic Ocean to changes in the Atlantic meridional overturning circulation: from millennial to seasonal variability

Grant number: 12/17517-3
Support type:Research Program on Global Climate Change - Young Investigators
Duration: March 01, 2013 - November 30, 2017
Field of knowledge:Physical Sciences and Mathematics - Oceanography
Principal Investigator:Cristiano Mazur Chiessi
Grantee:
Home Institution: Escola de Artes, Ciências e Humanidades (EACH). Universidade de São Paulo (USP). São Paulo, SP, Brazil
Assoc. researchers:Francisco William da Cruz Junior ; Ilana Elazari Klein Coaracy Wainer ; Silvia Helena de Mello e Sousa ; Wânia Duleba
Associated scholarship(s):13/14599-1 - Response of the deep tropical South Atlantic to changes in the Atlantic meridional overturning circulation: an isotopic approach, BP.MS
13/25518-2 - Variability of the Brazil Current and its impacts on the South American climate during the last 30,000 years, BP.MS
13/22521-2 - Effects of abrupt changes in the Atlantic meridional overturning circulation over deep-water masses: an isotopic approach, BP.DD

Abstract

The Atlantic meridional overturning circulation (AMOC) plays a fundamental role in the oceanography and climate of the Atlantic realm. Atmosphere-ocean general circulation models have predicted a weakening in AMOC strength for the coming decades. Thus, a comprehensive understanding of the response of the western Atlantic Ocean to changes in AMOC on different time scales is a key issue. Here we propose to reconstruct changes in stratification of the upper water column and deep water geometry in the western Atlantic Ocean since Marine Isotope Stage 3 in order to explore the response of the western Atlantic Ocean to changes in AMOC on millennial to seasonal timescales. Therefore, we will analyze stable oxygen and carbon isotopes as well as Mg/Ca ratios in selected species of planktonic and benthic foraminifera from a suite of 18 carefully selected sediment cores from the tropical and subtropical western Atlantic Ocean. The sediment cores will have age models determined based on AMS 14C datings on monospecific foraminifera. Additionally, bulk sediment geochemistry will be analyzed on all cores in order to refine the variability in continental precipitation. Through this project we expect to: (i) significantly contribute to the debate of possible impacts that future changes in AMOC may have over the western Atlantic Ocean; (ii) establish a top-level research group on paleoceanography/paleoclimatology at the School of Arts, Sciences and Humanities, USP; and (iii) set up at the same institution a cutting-edge laboratory specialized on stable oxygen and carbon isotope analyses on very small carbonate samples (i.e., ca. 10 microg) (AU)

Articles published in Agência FAPESP about the research grant
Study of shells shows how oceans react to global warming 
Warming could reduce oceanic circulation in the Atlantic by 44% 

Scientific publications (25)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
GU, FANG; ZONNEVELD, KARIN A. F.; CHIESSI, CRISTIANO M.; ARZ, HELGE W.; PAETZOLD, JUERGEN; BEHLING, HERMANN. Long-term vegetation, climate and ocean dynamics inferred from a 73,500 years old marine sediment core (GeoB2107-3) off southern Brazil. QUATERNARY SCIENCE REVIEWS, v. 172, p. 55-71, SEP 15 2017. Web of Science Citations: 0.
WARRATZ, GRIT; HENRICH, RUEDIGER; VOIGT, INES; CHIESSI, CRISTIANO M.; KUHN, GERHARD; LANTZSCH, HENDRIK. Deglacial changes in the strength of deep southern component water and sediment supply at the Argentine continental margin. PALEOCEANOGRAPHY, v. 32, n. 8, p. 796-812, AUG 2017. Web of Science Citations: 0.
MULITZA, STEFAN; CHIESSI, CRISTIANO M.; SCHEFUSS, ENNO; LIPPOLD, JOERG; WICHMANN, DAVID; ANTZ, BENNY; MACKENSEN, ANDREAS; PAUL, ANDRE; PRANGE, MATTHIAS; REHFELD, KIRA; WERNER, MARTIN; BICKERT, TORSTEN; FRANK, NORBERT; KUHNERT, HENNING; LYNCH-STIEGLITZ, JEAN; PORTILHO-RAMOS, RODRIGO C.; SAWAKUCHI, ANDRE O.; SCHULZ, MICHAEL; SCHWENK, TILMANN; TIEDEMANN, RALF; VAHLENKAMP, MAXIMILIAN; ZHANG, YANCHENG. Synchronous and proportional deglacial changes in Atlantic meridional overturning and northeast Brazilian precipitation. PALEOCEANOGRAPHY, v. 32, n. 6, p. 622-633, JUN 2017. Web of Science Citations: 0.
SUN, SHUWEN; SCHEFUSS, ENNO; MULITZA, STEFAN; CHIESSI, CRISTIANO M.; SAWAKUCHI, ANDRE O.; ZABEL, MATTHIAS; BAKER, PAUL A.; HEFTER, JENS; MOLLENHAUER, GESINE. Origin and processing of terrestrial organic carbon in the Amazon system: lignin phenols in river, shelf, and fan sediments. BIOGEOSCIENCES, v. 14, n. 9, p. 2495-2512, MAY 17 2017. Web of Science Citations: 0.
PORTILHO-RAMOS, R. C.; CHIESSI, C. M.; ZHANG, Y.; MULITZA, S.; KUCERA, M.; SICCHA, M.; PRANGE, M.; PAUL, A. Coupling of equatorial Atlantic surface stratification to glacial shifts in the tropical rainbelt. SCIENTIFIC REPORTS, v. 7, MAY 8 2017. Web of Science Citations: 0.
CAMPOS, MARILIA C.; CHIESSI, CRISTIANO M.; VOIGT, INES; PIOLA, ALBERTO R.; KUHNERT, HENNING; MULITZA, STEFAN. delta C-13 decreases in the upper western South Atlantic during Heinrich Stadials 3 and 2. Climate of the Past, v. 13, n. 4 APR 18 2017. Web of Science Citations: 0.
SANTOS, THIAGO P.; LESSA, DOUGLAS O.; VENANCIO, IGOR M.; CHIESSI, CRISTIANO M.; MULITZA, STEFAN; KUHNERT, HENNING; GOVIN, ALINE; MACHADO, THIAGO; COSTA, KAREN B.; TOLEDO, FELIPE; DIAS, BRUNA B.; ALBUQUERQUE, ANA LUIZA S. Prolonged warming of the Brazil Current precedes deglaciations. Earth and Planetary Science Letters, v. 463, p. 1-12, APR 1 2017. Web of Science Citations: 2.
VOIGT, INES; CHIESSI, CRISTIANO M.; PIOLA, ALBERTO R.; HENRICH, RUEDIGER. Holocene changes in Antarctic Intermediate Water flow strength in the Southwest Atlantic. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, v. 463, p. 60-67, DEC 1 2016. Web of Science Citations: 1.
HAEGGI, CHRISTOPH; SAWAKUCHI, ANDRE O.; CHIESSI, CRISTIANO M.; MULITZA, STEFAN; MOLLENHAUER, GESINE; SAWAKUCHI, HENRIQUE O.; BAKER, PAUL A.; ZABEL, MATTHIAS; SCHEFUSS, ENNO. Origin, transport and deposition of leaf-wax biomarkers in the Amazon Basin and the adjacent Atlantic. GEOCHIMICA ET COSMOCHIMICA ACTA, v. 192, p. 149-165, NOV 2016. Web of Science Citations: 3.
ZHANG, YANCHENG; ZHANG, XU; CHIESSI, CRISTIANO M.; MULITZA, STEFAN; ZHANG, XIAO; LOHMANN, GERRIT; PRANGE, MATTHIAS; BEHLING, HERMANN; ZABEL, MATTHIAS; GOVIN, ALINE; SAWAKUCHI, ANDR O.; CRUZ, FRANCISCO W.; WEFER, GEROLD. Equatorial Pacific forcing of western Amazonian precipitation during Heinrich Stadial 1. SCIENTIFIC REPORTS, v. 6, OCT 25 2016. Web of Science Citations: 1.
HOWE, JACOB N. W.; PIOTROWSKI, ALEXANDER M.; OPPO, DELIA W.; HUANG, KUO-FANG; MULITZA, STEFAN; CHIESSI, CRISTIANO M.; BLUSZTAJN, JUREK. Antarctic intermediate water circulation in the South Atlantic over the past 25,000years. PALEOCEANOGRAPHY, v. 31, n. 10, p. 1302-1314, OCT 2016. Web of Science Citations: 2.
MORARD, RAPHAEL; REINELT, MELANIE; CHIESSI, CRISTIANO M.; GROENEVELD, JEROEN; KUCERA, MICHAL. Tracing shifts of oceanic fronts using the cryptic diversity of the planktonic foraminifera Globorotalia inflata. PALEOCEANOGRAPHY, v. 31, n. 9, p. 1193-1205, SEP 2016. Web of Science Citations: 1.
HOWE, JACOB N. W.; PIOTROWSKI, ALEXANDER M.; NOBLE, TARYN L.; MULITZA, STEFAN; CHIESSI, CRISTIANO M.; BAYON, GERMAIN. North Atlantic Deep Water Production during the Last Glacial Maximum. NATURE COMMUNICATIONS, v. 7, JUN 2016. Web of Science Citations: 14.
ZHANG, YANCHENG; CHIESSI, CRISTIANO M.; MULITZA, STEFAN; ZABEL, MATTHIAS; TRINDADE, RICARDO I. F.; HOLLANDA, MARIA HELENA B. M.; DANTAS, ELTON L.; GOVIN, ALINE; TIEDEMANN, RALF; WEFER, GEROLD. Origin of increased terrigenous supply to the NE South American continental margin during Heinrich Stadial 1 and the Younger Dryas. Earth and Planetary Science Letters, v. 432, p. 493-500, DEC 15 2015. Web of Science Citations: 3.
STRIKIS, NICOLAS M.; CHIESSI, CRISTIANO M.; CRUZ, FRANCISCO W.; VUILLE, MATHIAS; CHENG, HAI; DE SOUZA BARRETO, ELINE A.; MOLLENHAUER, GESINE; KASTEN, SABINE; KARMANN, IVO; EDWARDS, R. LAWRENCE; PABLO BERNAL, JUAN; SALES, HAMILTON DOS REIS. Timing and structure of Mega-SACZ events during Heinrich Stadial 1. Geophysical Research Letters, v. 42, n. 13, p. 5477-5484, JUL 16 2015. Web of Science Citations: 9.
GARCIA CHAPORI, NATALIA; CHIESSI, CRISTIANO MAZUR; BICKERT, TORSTEN; LAPRIDA, CECILIA. Sea-surface temperature reconstruction of the Quaternary western South Atlantic: New planktonic foraminiferal correlation function. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, v. 425, p. 67-75, MAY 1 2015. Web of Science Citations: 2.
RAZIK, SEBASTIAN; GOVIN, ALINE; CHIESSI, CRISTIANO M.; VON DOBENECK, TILO. Depositional provinces, dispersal, and origin of terrigenous sediments along the SE South American continental margin. MARINE GEOLOGY, v. 363, p. 261-272, MAY 1 2015. Web of Science Citations: 5.
VOIGT, INES; CHIESSI, CRISTIANO M.; PRANGE, MATTHIAS; MULITZA, STEFAN; GROENEVELD, JEROEN; VARMA, VIDYA; HENRICH, RUEDIGER. Holocene shifts of the southern westerlies across the South Atlantic. PALEOCEANOGRAPHY, v. 30, n. 2, p. 39-51, FEB 2015. Web of Science Citations: 9.
CHIESSI, C. M.; MULITZA, S.; MOLLENHAUER, G.; SILVA, J. B.; GROENEVELD, J.; PRANGE, M. Thermal evolution of the western South Atlantic and the adjacent continent during Termination 1. Climate of the Past, v. 11, n. 6, p. 915-929, 2015. Web of Science Citations: 6.
HAEGGI, C.; CHIESSI, C. M.; SCHEFUSS, E. Testing the D/H ratio of alkenones and palmitic acid as salinity proxies in the Amazon Plume. BIOGEOSCIENCES, v. 12, n. 23, p. 7239-7249, 2015. Web of Science Citations: 1.
CHIESSI, CRISTIANO M.; MULITZA, STEFAN; GROENEVELD, JEROEN; SILVA, JULIANA B.; CAMPOS, MARILIA C.; GURGEL, MARCIO H. C. Variability of the Brazil Current during the late Holocene. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, v. 415, n. SI, p. 28-36, DEC 1 2014. Web of Science Citations: 9.
LANTZSCH, HENDRIK; HANEBUTH, TILL J. J.; CHIESSI, CRISTIANO M.; SCHWENK, TILMANN; VIOLANTE, ROBERTO A. The high-supply, current-dominated continental margin of southeastern South America during the late Quaternary. Quaternary Research, v. 81, n. 2, p. 339-354, MAR 2014. Web of Science Citations: 13.
GOVIN, A.; CHIESSI, C. M.; ZABEL, M.; SAWAKUCHI, A. O.; HESLOP, D.; HOERNER, T.; ZHANG, Y.; MULITZA, S. Terrigenous input off northern South America driven by changes in Amazonian climate and the North Brazil Current retroflection during the last 250 ka. Climate of the Past, v. 10, n. 2, p. 843-862, 2014. Web of Science Citations: 12.
BENDER, VERA B.; HANEBUTH, TILL J. J.; CHIESSI, CRISTIANO M. Holocene shifts of the Subtropical Shelf Front off southeastern South America controlled by high and low latitude atmospheric forcings. PALEOCEANOGRAPHY, v. 28, n. 3, p. 481-490, SEP 2013. Web of Science Citations: 8.
PRADO, L. F.; WAINER, I.; CHIESSI, C. M.; LEDRU, M-P; TURCQ, B. A mid-Holocene climate reconstruction for eastern South America. Climate of the Past, v. 9, n. 5, p. 2117-2133, 2013. Web of Science Citations: 20.

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