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Human-Driven Sea-Level Rise Has Increased Frequency of Extreme Coastal Flooding, Study Says
Researchers say climate change and rising seas have made once-rare coastal flood events far more common, with 58% of extreme water-level days linked to warming in one study.
On Wednesday, a new study in Nature Climate Change reported that human-driven sea-level rise has made historically rare extreme coastal flooding about 12 times more likely to occur.
Human-Caused warming has been the primary factor behind rising sea levels since the 1960s, according to a Science Advances study that found climate change responsible for 58% of extreme water level days between 2000 and 2018.
For nearly half the sites examined, 100-year flood events became at least 10 times more likely by 2005, with Wellington experiencing far greater increases in flood frequency than the global average.
Supplied Victoria University professor James Renwick said the findings underline the need for "urgent adaptation," noting that the climate change signal is now detectable worldwide and affecting coastal inundation.
Waikato University environmental planning research associate Rob Bell explained that even minor sea-level rise can rapidly escalate flooding frequency in New Zealand, emphasizing the necessity of updated flood protection planning.