Tropical South Atlantic influence on Northeastern Brazil precipitation and ITCZ displacement during the past 2300 years.

ABSTRACT: Recent paleoclimatic studies suggest that changes in the tropical rainbelt across the Atlantic Ocean during the past two millennia are linked to a latitudinal shift of the Intertropical Convergence Zone (ITCZ) driven by the Northern Hemisphere (NH) climate. However, little is known regarding other potential drivers that can affect tropical Atlantic rainfall, mainly due to the scarcity of adequate and high-resolution records. In this study, we fill this gap by reconstructing precipitation changes in Northeastern Brazil during the last 2,300 years from a high-resolution lake record of hydrogen isotope compositions of plant waxes. We find that regional precipitation along the coastal area of South America was not solely governed by north-south displacements of the ITCZ due to changes in NH cl

SUBMITTER: Utida G 

PROVIDER: S-EPMC6368536 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature