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Impact of volcanism on the South American Monsoon System and its relationship with the Atlantic Ocean sea surface temperature modes of variability

Grant number: 18/14789-9
Support type:Regular Research Grants
Duration: December 01, 2018 - November 30, 2021
Field of knowledge:Physical Sciences and Mathematics - Oceanography - Physical Oceanography
Cooperation agreement: CNRS
Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
Principal researcher:Ilana Elazari Klein Coaracy Wainer
Grantee:Ilana Elazari Klein Coaracy Wainer
Principal researcher abroad: Myriam Khodri
Institution abroad: Institut Pierre Simon Laplace (IPSL), France
Home Institution: Instituto Oceanográfico (IO). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated research grant:15/50686-1 - Paleo-constraints on monsoon evolution and dynamics, AP.TEM

Abstract

The South American Monsoon (SAMS) has a direct impact on the hydrology of the region and is influenced by the variability of surface temperatures in the South Atlantic. This ocean is indeedone of the most important sources of moisture flow that feeds rainfalls in South America. This monsoon flux also depends on the land-sea gradient to establish and evolve. Due to their impacton the net solar radiation at the surface, large eruptions can significantly influence SAMS with potentially devastating consequences on the local economy. Observations indicate a response generally associated with a decrease in surface temperatures and tropical precipitation for several years following a stratospheric eruption. In this context, we wish to better characterizethe response of SAMS to volcanism and the role of the Atlantic Ocean relying on observations and sensitivity experiments with the IPSL models following the methodology developed by Khodri et al(2017). (AU)

Scientific publications
(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)
AGUIAR, WILTON; MEISSNER, KATRIN J.; MONTENEGRO, ALVARO; PRADO, LUCIANA; WAINER, ILANA; CARLSON, ANDERS E.; MATA, MAURICIO M. Magnitude of the 8.2 ka event freshwater forcing based on stable isotope modelling and comparison to future Greenland melting. SCIENTIFIC REPORTS, v. 11, n. 1 MAR 9 2021. Web of Science Citations: 0.
PRADO, LUCIANA FIGUEIREDO; WAINER, ILANA; YOKOYAMA, ELDER; KHODRI, MYRIAM; GARNIER, JEREMIE. Changes in summer precipitation variability in central Brazil over the past eight decades. INTERNATIONAL JOURNAL OF CLIMATOLOGY, MAR 2021. Web of Science Citations: 0.
SILVA, PAULO; WAINER, ILANA; KHODRI, MYRIAM. Changes in the equatorial mode of the Tropical Atlantic in terms of the Bjerknes Feedback Index. Climate Dynamics, v. 56, n. 9-10 JAN 2021. Web of Science Citations: 0.

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