Here we present compound-specific radiocarbon data of terrigenous organic fractions from a sedimentary archive offshore the Congo River, in conjunction with molecular markers for methane-producing land cover reflecting wetland extent.
We find that the Congo River has been discharging aged organic matter for several thousand years, with apparently increasing ages from the mid- to the Late Holocene.
We find that central African precipitation during the past 20,000 years was mainly controlled by the difference in sea surface temperatures between the tropics and subtropics of the South Atlantic Ocean, whereas we find no evidence that changes in the position of the Intertropical Convergence Zone had a significant influence on the overall moisture availability in central Africa.
We conclude that changes in ocean circulation, and hence sea surface temperature patterns, were important in modulating atmospheric moisture transport onto the central African continent.
Becher Weg 21, 55128 Mainz, Germany), AJ(Institute of Geosciences, Johannes Gutenberg University, J.-J.
It combined a new 3 MV Tandetron accelerator mass spectrometer (AMS) system with the conventional Radiocarbon and Mass-Spectormetry Laboratories, started in 1962.
The AMS Laboratory was founded to provide radiometric dating services to the University of Kiel and to customers from all over the world.
Long term stability is demonstrated by the results obtained for IAEA reference materials, measured routinely and regularly over the years.
The Leibniz Laboratory for Radiometric Dating and Stable Isotope Research was established at the Christian-Albrechts-University of Kiel, Germany, in 1994.
Life and vegetation in low-latitude continental regions depend primarily on the availability of water.