Intense precipitation events associated with landfalling tropical cyclones in response to a warmer climate and increased CO2

Enrico Scoccimarro, Silvio Gualdi, Gabriele Villarini, Gabriel A. Vecchi, Ming Zhao, Kevin Walsh, Antonio Navarra

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

In this work the authors investigate possible changes in the intensity of rainfall events associated with tropical cyclones (TCs) under idealized forcing scenarios, including a uniformly warmer climate, with a special focus on landfalling storms. A new set of experiments designed within the U.S. Climate Variability and Predictability (CLIVAR) Hurricane Working Group allows disentangling the relative role of changes in atmospheric carbon dioxide from that played by sea surface temperature (SST) in changing the amount of precipitation associated with TCs in a warmer world. Compared to the present-day simulation, an increase in TC precipitation was found under the scenarios involving SST increases. On the other hand, in a CO2- doubling-only scenario, the changes in TC rainfall are small and it was found that, on average, TC rainfall tends to decrease compared to the present-day climate. The results of this study highlight the contribution of landfalling TCs to the projected increase in the precipitation changes affecting the tropical coastal regions.

Original languageEnglish (US)
Pages (from-to)4642-4654
Number of pages13
JournalJournal of Climate
Volume27
Issue number12
DOIs
StatePublished - 2014

All Science Journal Classification (ASJC) codes

  • Atmospheric Science

Keywords

  • Extreme events, Precipitation, Tropical cyclones, Climate models

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