Radiocarbon dating uses the decay of a radioactive isotope of carbon (14C) to measure time
and date objects containing carbon-bearing material. With a half-life of 5,700±30 years …

To reconstruct past environmental changes, a range of indirect or proxy approaches can be
applied to Quaternary archives. Here, we review the complementary and novel insights that …

The changes in atmospheric p CO2 provide evidence for the release of large amounts of
ancient carbon during the last deglaciation. However, the sources and mechanisms that …

Rock-derived or petrogenic organic carbon has traditionally been regarded as being non-
bioavailable and bypassing the active carbon cycle when eroded. However, it has become …

Marine sedimentary records are a key archive when reconstructing past climate; however,
mixing at the seabed (bioturbation) can strongly influence climate records, especially when …

Abstract During the last deglaciation (18–8 kyr BP), shelf flooding and warming presumably
led to a large-scale decomposition of permafrost soils in the mid-to-high latitudes of the …

The radiocarbon analysis laboratory at Alfred Wegener Institute Helmholtz Centre for Polar
and Marine Research (AWI) is equipped with an accelerator mass spectrometer (AMS) …

Glacial legacies preserved in permafrost such as buried glacial ice of the last ice age are of
increasing concern in the Western Canadian Arctic. Permafrost collapse due to melting …

We discuss present and developing techniques for studying radiocarbon in marine organic
carbon (C). Bulk DOC (dissolved organic C) Δ14C measurements reveal information about …

Compound-specific radiocarbon analysis (CSRA) provides the possibility to date sample
material at a molecular level. N-alkanes are considered as specific compounds with high …