When we talk approximately climate change today,we have to look at what the climate was previously like in order to recognise the natural variations and to be able to distinguish them from the human-induced changes. Researchers from the Niels Bohr Institute have analysed the natural climate variations over the final 12000 years, during which we have had a warm interglacial period and they have looked back 5 million years to see the major features of the soil's climate. The research shows that not only is the weather chaotic, or but the soil's climate is chaotic and can be difficult to predict. The results are published in the scientific journal,Nature Communications.
Source: phys.org