California is now well into its fourth consecutive year of drought. This is not without consequences. Tensions in the state have mounted as urban and agricultural water users become increasingly stressed by water shortages — but we can't blame the almond farmers. One thing that all Californians can agree upon is that we need to find solutions, because the drought is affecting livelihoods and the environment in a serious way.Climate change has likely played a pivotal role in exacerbating the California drought. A team of Stanford researchers have shown that one driver for this is a persistent region of high atmospheric pressure off the state's coast, keeping rainfall and storms away from land. These conditions are much more likely to occur with the high greenhouse gas concentrations that we are experiencing today. In exploring climate model projections, it appears that the situation will get worse.
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