More evidence how little we still know about earth's climate! Climate models are junk!
I have blogged here, here before that the fact that solar system travels through space and that the earth's axis has a precession influences climate as well. The cycle of the earth's precession is about 26,000 years.
Remember: Global Warming is a hoax and Climate Change a religion!
"A research team led by the Leibniz Institute for Baltic Sea Research Warnemünde (IOW) has analyzed 50,000 years of mid-latitude hydroclimate of the South-East Pacific using special moisture related indicators in marine sediment cores. They have found that natural variations in the Earth's orbital parameters exert a decisive influence. ...
"However, based on the results of the deuterium measurements, our study provides concrete evidence that the hydroclimate of Chile's mid-latitudes is substantially controlled by orbital parameters. And hydroclimatic extremes in south-central Chile, such as the very high levels of precipitation during the last ice age and the pronounced drought of the early Holocene, can also be plausibly explained by orbital changes," ..."
From the abstract:
"Reconstructing rainfall variability and moisture sources is a critical aspect to understand past and future hydroclimate dynamics. Here, we use changes in the deuterium content of land-plant leaf waxes from two marine sediment cores located off Chile to reconstruct changes in rainfall amount and variation in moisture sources over the last ~50 ka. The records indicate increased moisture in central Chile during precession maxima, but an obliquity modulation is evident in southern Chile. While the southern westerly winds are the dominant factor of precipitation in southern Chile by bringing moisture and perturbations from the extratropics, the subtropics represent an additional moisture source during precession maxima due to a stronger subtropical jet increasing moisture transport from the tropics to the mid-latitudes. These findings imply that a combination of orbital modulation of moisture sources and rainfall amount explains the last glacial moisture maximum and early Holocene moisture minimum in south-central Chile."
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