The researchers say the data confirms that both frequency and intensity of rainfall and droughts are increasing due to burning fossil fuels and other human activity that releases greenhouse gases
“I was surprised to see how well correlated the global intensity was with global mean temperatures,” said Matthew Rodell, study author and deputy director of Earth sciences for hydrosphere, biosphere, and geophysics at NASA Goddard Space Flight Center.
That showed the most extreme rains keep happening in sub-Saharan Africa, at least through December 2021, the end of the data. The rainfall extremes also took place in central and eastern North America from 2018-2021, and Australia during 2011-2012. A warmer atmosphere increases the rate at which water evaporates during dry periods. It also holds more water vapor, which fuels heavy rainfall events.
Seager said it’s a mistake to assume that future wet and dry extremes can be managed the same as in the past because “everything’s going to get amplified on both ends of the dry-wet spectrum.”
France Dernières Nouvelles, France Actualités
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