Weatherwatch: rainclouds are travelling farther in warmer world
Climate crisis affects not only the amount of rain that falls but where, with implications for land use and water security Have you ever wondered
Climate crisis affects not only the amount of rain that falls but where, with implications for land use and water security Have you ever wondered how far a raindrop has travelled before it lands on you? It may have journeyed thousands of kilometres from the ocean, sea or lake it evaporated from – and now research shows raindrops are travelling even farther than they used to.
Warmer air can hold more water vapour, and that is changing not only how much rain we receive but also where it falls. Travis Aerenson, of the University of Wyoming, and his colleagues modelled atmospheric moisture movements in the US over more than three decades.
Their research showed that in the southwestern and southern plains, moisture in the atmosphere travels 30 to 50 miles (50 to 80km) farther than it did 35 years ago, staying aloft for an extra two to four hours before falling as rain.
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