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Published November 27, 2019 | Version v1
Dataset Open

Data for Variations in the Intensity and Spatial Extent of Tropical Cyclone Precipitation

  • 1. University of California, Santa Barbara
  • 2. Columbia University
  • 3. Northwestern University
  • 4. Stanford University

Description

The intensity and spatial extent of tropical cyclone precipitation (TCP) often shapes the risk posed by landfalling storms. Here we provide a comprehensive climatology of landfalling TCP characteristics as a function of tropical cyclone strength, using daily precipitation station data and Atlantic US landfalling tropical cyclone tracks from 1900-2017. We analyze the intensity and spatial extent of ≥ 1 mm/day TCP (Z1) and ≥ 50 mm/day TCP (Z50). We show that the highest median intensity and largest median spatial extent of Z1 and Z50 occur for tropical storms that had been major storms at some point during their lifetime, indicating greater flood risk despite weaker wind speeds. We also find some signs of TCP change in recent decades. In particular, for major hurricanes that have weakened to minor hurricanes and tropical storms, Z50 intensity has significantly increased, indicating possible increases in flood risk to coastal communities in more recent years.

Notes

See uploaded README.xls file for data file descriptions and figure/table cross-reference.

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