Table1_Tropical South American Rainfall Response to Dansgaard-Oeschger Stadials of Marine Isotope Stage 5.DOCX
Tropical precipitation patterns will most likely be altered by future climate change, with major socioeconomic consequences for human populations that are highly reliant on water availability for subsistence like populations in northeastern (NE) Brazil. Socioeconomic consequences may be particularly...
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ftfrontimediafig:oai:figshare.com:article/19179278 2023-05-15T18:01:09+02:00 Table1_Tropical South American Rainfall Response to Dansgaard-Oeschger Stadials of Marine Isotope Stage 5.DOCX Igor M. Venancio Rodrigo A. Nascimento Thiago P. Santos Andre L. Belem Douglas O. Lessa Ralf Tiedemann Cristiano M. Chiessi Stefan Mulitza Ana Luiza S. Albuquerque 2022-02-16T04:02:46Z https://doi.org/10.3389/feart.2022.826993.s001 https://figshare.com/articles/dataset/Table1_Tropical_South_American_Rainfall_Response_to_Dansgaard-Oeschger_Stadials_of_Marine_Isotope_Stage_5_DOCX/19179278 unknown doi:10.3389/feart.2022.826993.s001 https://figshare.com/articles/dataset/Table1_Tropical_South_American_Rainfall_Response_to_Dansgaard-Oeschger_Stadials_of_Marine_Isotope_Stage_5_DOCX/19179278 CC BY 4.0 CC-BY Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change intertropical convergence zone last interglacial Dansgaard-Oeschger cycles northeastern Brazil sea surface temperature Dataset 2022 ftfrontimediafig https://doi.org/10.3389/feart.2022.826993.s001 2022-02-17T00:02:46Z Tropical precipitation patterns will most likely be altered by future climate change, with major socioeconomic consequences for human populations that are highly reliant on water availability for subsistence like populations in northeastern (NE) Brazil. Socioeconomic consequences may be particularly disruptive in the occurrence of abrupt climate change. Understanding the response of tropical precipitation to abrupt climate change is a crucial task for improving future projections and devising adaptation policies. Past abrupt climate change events such as the Dansgaard-Oeschger (DO) cycles may provide relevant insights regarding the dynamics of the climate system under this type of climate change. Here we present a paleoceanographic reconstruction off NE Brazil based on geochemical analyses (stable oxygen isotopes, Mg/Ca and Ba/Ca) performed in planktonic foraminifera, that focus on DO stadials of Marine Isotope Stage 5 (MIS5, 130–71 ka). Our new Ba/Ca record shows increases in fluvial discharge linked to enhanced continental precipitation over NE Brazil during DO stadials of MIS5. Tropical precipitation patterns were altered with enhanced rainfall in NE Brazil during DO stadials as a consequence of a southward displacement of the Intertropical Convergence Zone, which, in turn, was likely a response to changes in ocean heat transport and sea ice cover, as highlighted by recent climate model simulations. The results presented here provide useful information on how abrupt climate change can impact tropical rainfall, which is crucial for tropical societies in order to delineate strategies to cope with future climate change. Dataset Planktonic foraminifera Sea ice Frontiers: Figshare |
institution |
Open Polar |
collection |
Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change intertropical convergence zone last interglacial Dansgaard-Oeschger cycles northeastern Brazil sea surface temperature |
spellingShingle |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change intertropical convergence zone last interglacial Dansgaard-Oeschger cycles northeastern Brazil sea surface temperature Igor M. Venancio Rodrigo A. Nascimento Thiago P. Santos Andre L. Belem Douglas O. Lessa Ralf Tiedemann Cristiano M. Chiessi Stefan Mulitza Ana Luiza S. Albuquerque Table1_Tropical South American Rainfall Response to Dansgaard-Oeschger Stadials of Marine Isotope Stage 5.DOCX |
topic_facet |
Solid Earth Sciences Climate Science Atmospheric Sciences not elsewhere classified Exploration Geochemistry Inorganic Geochemistry Isotope Geochemistry Organic Geochemistry Geochemistry not elsewhere classified Igneous and Metamorphic Petrology Ore Deposit Petrology Palaeontology (incl. Palynology) Structural Geology Tectonics Volcanology Geology not elsewhere classified Seismology and Seismic Exploration Glaciology Hydrogeology Natural Hazards Quaternary Environments Earth Sciences not elsewhere classified Evolutionary Impacts of Climate Change intertropical convergence zone last interglacial Dansgaard-Oeschger cycles northeastern Brazil sea surface temperature |
description |
Tropical precipitation patterns will most likely be altered by future climate change, with major socioeconomic consequences for human populations that are highly reliant on water availability for subsistence like populations in northeastern (NE) Brazil. Socioeconomic consequences may be particularly disruptive in the occurrence of abrupt climate change. Understanding the response of tropical precipitation to abrupt climate change is a crucial task for improving future projections and devising adaptation policies. Past abrupt climate change events such as the Dansgaard-Oeschger (DO) cycles may provide relevant insights regarding the dynamics of the climate system under this type of climate change. Here we present a paleoceanographic reconstruction off NE Brazil based on geochemical analyses (stable oxygen isotopes, Mg/Ca and Ba/Ca) performed in planktonic foraminifera, that focus on DO stadials of Marine Isotope Stage 5 (MIS5, 130–71 ka). Our new Ba/Ca record shows increases in fluvial discharge linked to enhanced continental precipitation over NE Brazil during DO stadials of MIS5. Tropical precipitation patterns were altered with enhanced rainfall in NE Brazil during DO stadials as a consequence of a southward displacement of the Intertropical Convergence Zone, which, in turn, was likely a response to changes in ocean heat transport and sea ice cover, as highlighted by recent climate model simulations. The results presented here provide useful information on how abrupt climate change can impact tropical rainfall, which is crucial for tropical societies in order to delineate strategies to cope with future climate change. |
format |
Dataset |
author |
Igor M. Venancio Rodrigo A. Nascimento Thiago P. Santos Andre L. Belem Douglas O. Lessa Ralf Tiedemann Cristiano M. Chiessi Stefan Mulitza Ana Luiza S. Albuquerque |
author_facet |
Igor M. Venancio Rodrigo A. Nascimento Thiago P. Santos Andre L. Belem Douglas O. Lessa Ralf Tiedemann Cristiano M. Chiessi Stefan Mulitza Ana Luiza S. Albuquerque |
author_sort |
Igor M. Venancio |
title |
Table1_Tropical South American Rainfall Response to Dansgaard-Oeschger Stadials of Marine Isotope Stage 5.DOCX |
title_short |
Table1_Tropical South American Rainfall Response to Dansgaard-Oeschger Stadials of Marine Isotope Stage 5.DOCX |
title_full |
Table1_Tropical South American Rainfall Response to Dansgaard-Oeschger Stadials of Marine Isotope Stage 5.DOCX |
title_fullStr |
Table1_Tropical South American Rainfall Response to Dansgaard-Oeschger Stadials of Marine Isotope Stage 5.DOCX |
title_full_unstemmed |
Table1_Tropical South American Rainfall Response to Dansgaard-Oeschger Stadials of Marine Isotope Stage 5.DOCX |
title_sort |
table1_tropical south american rainfall response to dansgaard-oeschger stadials of marine isotope stage 5.docx |
publishDate |
2022 |
url |
https://doi.org/10.3389/feart.2022.826993.s001 https://figshare.com/articles/dataset/Table1_Tropical_South_American_Rainfall_Response_to_Dansgaard-Oeschger_Stadials_of_Marine_Isotope_Stage_5_DOCX/19179278 |
genre |
Planktonic foraminifera Sea ice |
genre_facet |
Planktonic foraminifera Sea ice |
op_relation |
doi:10.3389/feart.2022.826993.s001 https://figshare.com/articles/dataset/Table1_Tropical_South_American_Rainfall_Response_to_Dansgaard-Oeschger_Stadials_of_Marine_Isotope_Stage_5_DOCX/19179278 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/feart.2022.826993.s001 |
_version_ |
1766170505927196672 |