Dry spells known as flash droughts, with a surprisingly rapid onset and often devastating impact, are becoming more frequent as human activity warms Earth, scientists say
"Both flash and slow droughts are increasing," says lead author of new study for which researchers analysed a combination of satellite data and ground moisture readings from a period of over 60 years.
"Both flash and slow droughts are increasing" as global temperatures rise, lead author Xing Yuan told AFP news agency. Global heating is a recipe for increasing those special conditions around the world, creating in certain areas a decrease in precipitation and increased evaporation, which dries out the soil more quickly.
Yuan also said the data showed a general increase in drought onset speeds, with his team finding a "robust transition at global scale" of slow to flash droughts.Thousands in Somalia face starvation amid severe drought, says reportThe concept of flash drought emerged in the early 21st century, but has received more attention since the summer 2012 drought in the United States, which set in particularly quickly and caused more than $30 billion in economic losses.
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