Global drought over about a decade
I'm trying to figure out a realistic mechanism to explain a global drought that only lasts for about a decade. Assume an earth-like planet.
My goal for this drought is not to have no rain and kill off everything, but create a significant food shortage because of crop failure. Assume farming technology around 1600s proficiency.
My best explanation currently is that there was a period of increased solar activity. During, say, northern hemisphere summers, this led to excessive heat and no rain, whereas the perspiration is being carried to the southern hemisphere where there's lots of rain in their winter, but it's too warm for snow and they get no snowpack.
Would something like that work?
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