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A look back on 50,000 years of South Pacific hydroclimate shows:
How wet it gets on earth also depends on the planet’s tilt

Jérôme Kaiser from the Leibniz Institute for Baltic Sea Research Warnemünde, expert in analysing environmental proxies from marine sediment cores
IOW researcher Jérôme Kaiser is an expert in analysing environmental proxies from marine sediment cores, which can be used to reconstruct environmental conditions in the earth's past. (Photo: IOW / K.Beck)

Understanding the causes of changing humidity and precipitation in the earth's past is crucial for better assessments of the planet’s future hydroclimate changes through improved modelling. A research team led by the IOW has now for the first time analysed 50,000 years of mid-latitude hydroclimate of the South-East Pacific using special moisture related indicators in marine sediment cores. The most important result is that natural variations in the earth's orbital parameters exert a decisive influence. The study was recently published in the renowned scientific journal Nature Communications, doi.org/10.1038/s41467-024-51985-4.

 

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