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The European Centre for Medium Range Weather Forecast (ECMWF) fifth-generation reanalysis of the global climate (ERA5) and the Climate Hazards Croup InfraRed Precipitation with Station (CHIPPS) daily measurements are used to examine extreme rainfall (1981-2022) in the contiguous U.S.A. Linear spatiotemporal trends in indicators of extreme rainfall frequency, magnitude, and duration recommended by WMO, as identified by the TheiI-Sen slope estimate and its Mann Kendall significance (p 2.5 mm day of rainfall over a given meteorological season expanded for DJF and MAM but shrunk for SON, from the 1981-1990 to 2011-2022 periods. If such trends continue, floods, landslides, and droughts may intensify.
Ishmam et al. (Tue,) studied this question.