It is a proved and known fact that a volcanic eruption can change the climate of an area by blasting loads of ash high in the sky.
But, do you know, things are also the other way round? The climate in its turn also has an impact on huge volcanic eruptions!
A bone-dry climate that occurs in periods between ice ages could make the right conditions for building up enough underground magma need for fueling a giant volcanic eruption! — Allen Glazner of the University of North Carolina in Chapel Hill explained.
Jake Lowenstern, U.S. Geologic Survey’s chief scientist of the Yellowstone Volcano Observatory said,
It’s all got to be underneath the ground in one place so that when you tap that magma chamber it all comes out at once or at least in a relatively short period of time, days to weeks.