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October 17, 2025Journal of Climate

Less intense daily precipitation maxima in regional compared to global gridded products

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Authors

LALisa V. AlexanderPNPhuong Loan NguyenMDMarkus G. Donat

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Overview

Analysis shows regional datasets are often drier than global reanalyses and other products, indicating differences in precipitation extremes.

Key Points

  • Regional datasets frequently reported as drier than global reanalyses, especially in south-east Asia and the Middle East.
  • Rx1day averaged trends indicate a mean increase of nearly 7% for each degree Celsius rise in global temperature.
  • Reanalyses show the highest levels of precipitation extremes, with data spread across various regions.
  • Correlation in Rx1day timing is strongest among in situ products, while reanalyses have less consistent agreement.

Cite This Study

Alexander et al. (2025) studied this question.

synapsesocial.com/papers/68f199b7de32064e504dc58fhttps://doi.org/10.1175/jcli-d-25-0222.1
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