Atmospheric scientists predict that unchecked carbon emissions will force tropical rains to shift northward in the coming decades, which would profoundly impact agriculture and economies near the Earth's equator. The northward rain shift would be spurred by carbon emissions that influence the formation of the intertropical convergence zones that are essentially atmospheric engines that drive about a third of the world's precipitation.
However, the northward shift will last for only about 20 years before greater forces stemming from warming southern oceans pull the convergence zones back southward and keep them there for another millennium, said Wei Liu, an associate professor of climate change and sustainability at UCR's College of Natural and Agricultural Sciences.
"This climate model included many components of the atmosphere, ocean, sea ice, and land. All these components are interacting with each other," he said."Basically, we try to simulate the real world. In the model, we can increase our carbon dioxide emissions from pre-industrial levels to much higher levels."
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