Methylation index of Branched Tetraethers (MBT) and Cyclization ratio of Branched Tetraethers (CBT), annual mean air temperature and soil pH of sediment core GeoB6518-1 in the Congo River basin
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2007
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| _version_ | 1867171716552196096 |
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| author | Weijers, Johan W H |
| author_facet | Weijers, Johan W H |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We analyzed the distribution of branched tetraether membrane lipids derived from soil bacteria in a marine sediment record that was recovered close to the Congo River outflow, and the results enabled us to reconstruct large-scale continental temperature changes in tropical Africa that span the past 25,000 years. Tropical African temperatures gradually increased from ~21° to 25°C over the last deglaciation, which is a larger warming than estimated for the tropical Atlantic Ocean. A direct comparison with sea-surface temperature estimates from the same core revealed that the land-sea temperature difference was, through the thermal pressure gradient, an important control on central African precipitation patterns. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_615247 |
| institution | PANGAEA |
| language | en |
| publishDate | 2007 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Methylation index of Branched Tetraethers (MBT) and Cyclization ratio of Branched Tetraethers (CBT), annual mean air temperature and soil pH of sediment core GeoB6518-1 in the Congo River basin Weijers, Johan W H AGE; Calculated, see reference(s); Center for Marine Environmental Sciences; Congo Fan; Cyclization ratio of branched tetraethers; DEPTH, sediment/rock; GeoB6518-1; Gravity corer (Kiel type); M47/3; MARUM; Meteor (1986); Methylation index of branched tetraethers; pH; see reference(s); SL; Temperature, annual mean We analyzed the distribution of branched tetraether membrane lipids derived from soil bacteria in a marine sediment record that was recovered close to the Congo River outflow, and the results enabled us to reconstruct large-scale continental temperature changes in tropical Africa that span the past 25,000 years. Tropical African temperatures gradually increased from ~21° to 25°C over the last deglaciation, which is a larger warming than estimated for the tropical Atlantic Ocean. A direct comparison with sea-surface temperature estimates from the same core revealed that the land-sea temperature difference was, through the thermal pressure gradient, an important control on central African precipitation patterns. |
| title | Methylation index of Branched Tetraethers (MBT) and Cyclization ratio of Branched Tetraethers (CBT), annual mean air temperature and soil pH of sediment core GeoB6518-1 in the Congo River basin |
| topic | AGE; Calculated, see reference(s); Center for Marine Environmental Sciences; Congo Fan; Cyclization ratio of branched tetraethers; DEPTH, sediment/rock; GeoB6518-1; Gravity corer (Kiel type); M47/3; MARUM; Meteor (1986); Methylation index of branched tetraethers; pH; see reference(s); SL; Temperature, annual mean |
| url | https://doi.org/10.1594/PANGAEA.615247 |