Utida G., Cruz F. W., Etourneau J., Bouloubassi I., Schefuss E., Vuille M., Novello V. F., Prado L. F., Sifeddine Abdelfettah, Klein V., Zular A., Viana J. C. C., Turcq Bruno. (2019). Tropical South Atlantic influence on Northeastern Brazil precipitation and ITCZ displacement during the past 2300 years. Scientific Reports - Nature, 9, p. art. 1698 [8 p.]. ISSN 2045-2322.
Titre du document
Tropical South Atlantic influence on Northeastern Brazil precipitation and ITCZ displacement during the past 2300 years
Année de publication
2019
Auteurs
Utida G., Cruz F. W., Etourneau J., Bouloubassi I., Schefuss E., Vuille M., Novello V. F., Prado L. F., Sifeddine Abdelfettah, Klein V., Zular A., Viana J. C. C., Turcq Bruno
Source
Scientific Reports - Nature, 2019,
9, p. art. 1698 [8 p.] ISSN 2045-2322
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 climate, but also by the contraction and expansion of the tropical rainbelt due to variations in sea surface temperature and southeast trade winds in the tropical South Atlantic Basin.
Plan de classement
Sciences du milieu [021]
;
Hydrologie [062]
;
Géologie et formations superficielles [064]
Description Géographique
BRESIL ; ATLANTIQUE
Localisation
Fonds IRD [F B010075199]
Identifiant IRD
fdi:010075199
