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

DOI

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.

Supplement to: Weijers, Johan W H; Schefuß, Enno; Schouten, Stefan; Sinninghe Damsté, Jaap S (2007): Coupled Thermal and Hydrological Evolution of Tropical Africa over the Last Deglaciation. Science, 315(5819), 1701-1704

Identifier
DOI https://doi.org/10.1594/PANGAEA.615247
Related Identifier https://doi.org/10.1126/science.1138131
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.615247
Provenance
Creator Weijers, Johan W H
Publisher PANGAEA
Publication Year 2007
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 484 data points
Discipline Earth System Research
Spatial Coverage (11.222 LON, -5.588 LAT); Congo Fan