In Brief
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Natural Climate Archive in the Amazon Region
Oxygen isotopes in the annual growth rings of trees are an excellent archive of precipitation dynamics in the tropical Amazon region. This is the result of a study conducted by a group of researchers from the Helmholtz Centre Potsdam - GFZ German Research Centre for Geosciences, the universities of Leeds (GB) and Utrecht (Netherlands) and from the Institut de Recherche pour le Développement (IRD, Peru). The Amazon region is 17 times larger than Germany and has a central part in shaping the global climate conditions. So far, however, only very little is known about its climatic past history. The rates of isotopes in annual growth rings reflect the past precipitation dynamics to an as yet unrivalled degree of accuracy.
