What is it about?
This study focuses on the impact of rapid climatic changes (multidecadal timescale) on the ocean off Peru over the last millennium. The analysis of three marine sediment cores gave access to information on biological production in surface waters, on the consumption of oxygen deeper in the water column as well as rainfall on the nearby continent.
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Why is it important?
This work is the one of the first providing information on the intensity of past variations in primary production, rainfall and oxygen consumption in the Peruvian system. We here demonstrate for the first time that the intensity of multidecadal climatic variations in this region did not depend on the mean state of the Pacific Ocean (i.e. on the predominance of La Niña or El Niño-like conditions).
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This page is a summary of: Pervasive multidecadal variations in productivity within the Peruvian Upwelling System over the last millennium, Quaternary Science Reviews, October 2015, Elsevier,
DOI: 10.1016/j.quascirev.2015.08.006.
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