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Global water cycle is more erratic and harder to predict, UN scientists warn (www.independent.co.uk)

submitted 3 months ago by wolfyvegan@slrpnk.net to c/climate_lm@slrpnk.net

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cross-posted from: https://lemmy.nz/post/28324402

Earth’s water cycle is becoming harder to predict as the climate changes, UN scientists have warned.

Last year was the sixth in a row to show an erratic cycle and the third where all glacier regions reported ice loss, according to the World Meteorological Organisation’s (WMO) state of global water resources report for 2024, released on Thursday.

They found that around 60% of rivers globally showed either too much or too little water compared to the average flow per year.

While the world has natural cycles of climate variability from year to year, long-term trends outlined in the report indicate the water cycle, at a global scale, is accelerating.

Stefan Uhlenbrook, WMO director of hydrology in the water and cryosphere division, said scientists feel it is “increasingly difficult to predict”.

“It’s more erratic – so either too much or too low on average flow per year,” he said.

As global warming drives higher global temperatures, the atmosphere can hold more water, leading either to longer dry periods or more intense rainfall.

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