Age models, organic analyses and major-element analyses of sediment cores on a transect of the tropical African rainbelt
The distribution of rainfall in tropical Africa is controlled by the African rainbelt**1, which oscillates on a seasonal basis. The rainbelt has varied on centennial to millennial timescales along with changes in Northern Hemisphere high-latitude climate**2, 3, 4, 5, the Atlantic meridional overturn...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.757457 2023-05-15T18:21:16+02:00 Age models, organic analyses and major-element analyses of sediment cores on a transect of the tropical African rainbelt Collins, James A Schefuß, Enno Heslop, David Mulitza, Stefan Prange, Matthias Zabel, Matthias Tjallingii, Rik Dokken, Trond Huang, Enqing Mackensen, Andreas Schulz, Michael Tian, Jun Zarriess, Michelle Wefer, Gerold MEDIAN LATITUDE: 5.458691 * MEDIAN LONGITUDE: -5.884982 * SOUTH-BOUND LATITUDE: -17.157217 * WEST-BOUND LONGITUDE: -18.581700 * NORTH-BOUND LATITUDE: 20.751700 * EAST-BOUND LONGITUDE: 13.400250 * DATE/TIME START: 1988-02-28T00:00:00 * DATE/TIME END: 2005-06-26T22:26:00 2011-02-18 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.757457 https://doi.org/10.1594/PANGAEA.757457 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.757457 https://doi.org/10.1594/PANGAEA.757457 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Collins, James A; Schefuß, Enno; Heslop, David; Mulitza, Stefan; Prange, Matthias; Zabel, Matthias; Tjallingii, Rik; Dokken, Trond; Huang, Enqing; Mackensen, Andreas; Schulz, Michael; Tian, Jun; Zarriess, Michelle; Wefer, Gerold (2011): Interhemispheric symmetry of tropical African rainbelt over the past 23,000 years. Nature Geoscience, 4(1), 42-45, https://doi.org/10.1038/ngeo1039 175-1078C 293 311 320 Angola Basin Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences Congo Fan DRILL Drilling/drill rig GeoB1023-5 GeoB4905-4 GeoB6518-1 GeoB7920-2 GeoB9508-5 GeoB9526-5 GeoB9535-4 Gravity corer (Kiel type) Joides Resolution Leg175 M41/1 M47/3 M53/1 M6/6 M65/1 MARUM Meteor (1986) Ocean Drilling Program ODP off Cameroon SL Dataset 2011 ftpangaea https://doi.org/10.1594/PANGAEA.757457 https://doi.org/10.1038/ngeo1039 2023-01-20T07:32:03Z The distribution of rainfall in tropical Africa is controlled by the African rainbelt**1, which oscillates on a seasonal basis. The rainbelt has varied on centennial to millennial timescales along with changes in Northern Hemisphere high-latitude climate**2, 3, 4, 5, the Atlantic meridional overturning circulation**6 and low-latitude insolation**7 over the past glacial-interglacial cycle. However, the overall dynamics of the African rainbelt remain poorly constrained and are not always consistent with a latitudinal migration**2, 4, 5, 6, as has been proposed for other regions**8, 9. Here we use terrestrially derived organic and sedimentary markers from marine sediment cores to reconstruct the distribution of vegetation, and hence rainfall, in tropical Africa during extreme climate states over the past 23,000 years. Our data indicate that rather than migrating latitudinally, the rainbelt contracted and expanded symmetrically in both hemispheres in response to changes in climate. During the Last Glacial Maximum and Heinrich Stadial 1, the rainbelt contracted relative to the late Holocene, which we attribute to a latitudinal compression of atmospheric circulation associated with lower global mean temperatures**10. Conversely, during the mid-Holocene climatic optimum, the rainbelt expanded across tropical Africa. In light of our findings, it is not clear whether the tropical rainbelt has migrated latitudinally on a global scale, as has been suggested**8,9. Dataset South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-18.581700,13.400250,20.751700,-17.157217) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
175-1078C 293 311 320 Angola Basin Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences Congo Fan DRILL Drilling/drill rig GeoB1023-5 GeoB4905-4 GeoB6518-1 GeoB7920-2 GeoB9508-5 GeoB9526-5 GeoB9535-4 Gravity corer (Kiel type) Joides Resolution Leg175 M41/1 M47/3 M53/1 M6/6 M65/1 MARUM Meteor (1986) Ocean Drilling Program ODP off Cameroon SL |
spellingShingle |
175-1078C 293 311 320 Angola Basin Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences Congo Fan DRILL Drilling/drill rig GeoB1023-5 GeoB4905-4 GeoB6518-1 GeoB7920-2 GeoB9508-5 GeoB9526-5 GeoB9535-4 Gravity corer (Kiel type) Joides Resolution Leg175 M41/1 M47/3 M53/1 M6/6 M65/1 MARUM Meteor (1986) Ocean Drilling Program ODP off Cameroon SL Collins, James A Schefuß, Enno Heslop, David Mulitza, Stefan Prange, Matthias Zabel, Matthias Tjallingii, Rik Dokken, Trond Huang, Enqing Mackensen, Andreas Schulz, Michael Tian, Jun Zarriess, Michelle Wefer, Gerold Age models, organic analyses and major-element analyses of sediment cores on a transect of the tropical African rainbelt |
topic_facet |
175-1078C 293 311 320 Angola Basin Benguela Current South Atlantic Ocean Center for Marine Environmental Sciences Congo Fan DRILL Drilling/drill rig GeoB1023-5 GeoB4905-4 GeoB6518-1 GeoB7920-2 GeoB9508-5 GeoB9526-5 GeoB9535-4 Gravity corer (Kiel type) Joides Resolution Leg175 M41/1 M47/3 M53/1 M6/6 M65/1 MARUM Meteor (1986) Ocean Drilling Program ODP off Cameroon SL |
description |
The distribution of rainfall in tropical Africa is controlled by the African rainbelt**1, which oscillates on a seasonal basis. The rainbelt has varied on centennial to millennial timescales along with changes in Northern Hemisphere high-latitude climate**2, 3, 4, 5, the Atlantic meridional overturning circulation**6 and low-latitude insolation**7 over the past glacial-interglacial cycle. However, the overall dynamics of the African rainbelt remain poorly constrained and are not always consistent with a latitudinal migration**2, 4, 5, 6, as has been proposed for other regions**8, 9. Here we use terrestrially derived organic and sedimentary markers from marine sediment cores to reconstruct the distribution of vegetation, and hence rainfall, in tropical Africa during extreme climate states over the past 23,000 years. Our data indicate that rather than migrating latitudinally, the rainbelt contracted and expanded symmetrically in both hemispheres in response to changes in climate. During the Last Glacial Maximum and Heinrich Stadial 1, the rainbelt contracted relative to the late Holocene, which we attribute to a latitudinal compression of atmospheric circulation associated with lower global mean temperatures**10. Conversely, during the mid-Holocene climatic optimum, the rainbelt expanded across tropical Africa. In light of our findings, it is not clear whether the tropical rainbelt has migrated latitudinally on a global scale, as has been suggested**8,9. |
format |
Dataset |
author |
Collins, James A Schefuß, Enno Heslop, David Mulitza, Stefan Prange, Matthias Zabel, Matthias Tjallingii, Rik Dokken, Trond Huang, Enqing Mackensen, Andreas Schulz, Michael Tian, Jun Zarriess, Michelle Wefer, Gerold |
author_facet |
Collins, James A Schefuß, Enno Heslop, David Mulitza, Stefan Prange, Matthias Zabel, Matthias Tjallingii, Rik Dokken, Trond Huang, Enqing Mackensen, Andreas Schulz, Michael Tian, Jun Zarriess, Michelle Wefer, Gerold |
author_sort |
Collins, James A |
title |
Age models, organic analyses and major-element analyses of sediment cores on a transect of the tropical African rainbelt |
title_short |
Age models, organic analyses and major-element analyses of sediment cores on a transect of the tropical African rainbelt |
title_full |
Age models, organic analyses and major-element analyses of sediment cores on a transect of the tropical African rainbelt |
title_fullStr |
Age models, organic analyses and major-element analyses of sediment cores on a transect of the tropical African rainbelt |
title_full_unstemmed |
Age models, organic analyses and major-element analyses of sediment cores on a transect of the tropical African rainbelt |
title_sort |
age models, organic analyses and major-element analyses of sediment cores on a transect of the tropical african rainbelt |
publisher |
PANGAEA |
publishDate |
2011 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.757457 https://doi.org/10.1594/PANGAEA.757457 |
op_coverage |
MEDIAN LATITUDE: 5.458691 * MEDIAN LONGITUDE: -5.884982 * SOUTH-BOUND LATITUDE: -17.157217 * WEST-BOUND LONGITUDE: -18.581700 * NORTH-BOUND LATITUDE: 20.751700 * EAST-BOUND LONGITUDE: 13.400250 * DATE/TIME START: 1988-02-28T00:00:00 * DATE/TIME END: 2005-06-26T22:26:00 |
long_lat |
ENVELOPE(-18.581700,13.400250,20.751700,-17.157217) |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Supplement to: Collins, James A; Schefuß, Enno; Heslop, David; Mulitza, Stefan; Prange, Matthias; Zabel, Matthias; Tjallingii, Rik; Dokken, Trond; Huang, Enqing; Mackensen, Andreas; Schulz, Michael; Tian, Jun; Zarriess, Michelle; Wefer, Gerold (2011): Interhemispheric symmetry of tropical African rainbelt over the past 23,000 years. Nature Geoscience, 4(1), 42-45, https://doi.org/10.1038/ngeo1039 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.757457 https://doi.org/10.1594/PANGAEA.757457 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.757457 https://doi.org/10.1038/ngeo1039 |
_version_ |
1766200442638827520 |