Climate modelling and potential positive feedback from peatlands globally
Even though peatlands contain an estimated amount of 530-694 GtC, most models still ignore the potential of a carbon source from these grounds. The limited number of models including peatlands in the estimations, predicts a continued sink or a loss of carbon sink potential in the future, while field experiments suggest carbon losses as a result of warming - however not accounting for longer growing sesons and increased productivity.
In the paper "Latitudinal limits to the predicted increase of the peatland carbon sink with warming", recently published in Nature Climate Change, the authors including LUCCI participant Svante Björck, describes how they have used the stratigraphic record of net carbon accumulation preserved by peatlands to examine the behaviour of the sink process for the last millenium. From 294 profiles a data set of carbon accumulation is created, covering globally distributed peatlands.