Boqueirão Lake, Northeastern Brazil 2,300 years dD precipitation reconstruction
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Dataset Open Access |
| Language: | en |
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PANGAEA
2019
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| _version_ | 1867168197246976000 |
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| author | Utida, Giselle da Cruz Junior, Francisco William Étourneau, Johan Bouloubassi, Ioanna Schefuß, Enno Vuille, Mathias Novello, Valdir Felipe Prado, Luciana Figueiredo Sifeddine, Abdelfettah Klein, Vincent Zular, André Viana, João Cláudio Cerqueira Turcq, Bruno Jean |
| author_facet | Utida, Giselle da Cruz Junior, Francisco William Étourneau, Johan Bouloubassi, Ioanna Schefuß, Enno Vuille, Mathias Novello, Valdir Felipe Prado, Luciana Figueiredo Sifeddine, Abdelfettah Klein, Vincent Zular, André Viana, João Cláudio Cerqueira Turcq, Bruno Jean |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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 from the core Boqc0901 dated by Viana et al . (2014). We present isotope carbon and hydrogen plant waxes of n-C28 alkanoic acid, the percentage of C3 plants and hydrogen isotope reconstruction of precipitation. 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_897505 |
| institution | PANGAEA |
| language | en |
| publishDate | 2019 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Boqueirão Lake, Northeastern Brazil 2,300 years dD precipitation reconstruction Utida, Giselle da Cruz Junior, Francisco William Étourneau, Johan Bouloubassi, Ioanna Schefuß, Enno Vuille, Mathias Novello, Valdir Felipe Prado, Luciana Figueiredo Sifeddine, Abdelfettah Klein, Vincent Zular, André Viana, João Cláudio Cerqueira Turcq, Bruno Jean Age; AGE; Boqc0901; C3 plant; DEPTH, sediment/rock; DHC; Diver-held corer; hydrogen; Isotope ratio mass spectrometry; isotopes; last millenia; n-Alkanoic acid C28, δ13C; n-Alkanoic acid C28, δ13C, standard deviation; n-Alkanoic acid C28, δD; n-Alkanoic acid C28, δD, standard deviation; Plant wax; δ Deuterium, precipitation wax reconstruction 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 from the core Boqc0901 dated by Viana et al . (2014). We present isotope carbon and hydrogen plant waxes of n-C28 alkanoic acid, the percentage of C3 plants and hydrogen isotope reconstruction of precipitation. 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. |
| title | Boqueirão Lake, Northeastern Brazil 2,300 years dD precipitation reconstruction |
| topic | Age; AGE; Boqc0901; C3 plant; DEPTH, sediment/rock; DHC; Diver-held corer; hydrogen; Isotope ratio mass spectrometry; isotopes; last millenia; n-Alkanoic acid C28, δ13C; n-Alkanoic acid C28, δ13C, standard deviation; n-Alkanoic acid C28, δD; n-Alkanoic acid C28, δD, standard deviation; Plant wax; δ Deuterium, precipitation wax reconstruction |
| url | https://doi.org/10.1594/PANGAEA.897505 |