Rainfall strength and area from landfalling tropical cyclones over the North Indian and western North Pacific oceans under increased CO2 conditions

Mincheol Moon, Kyung Ja Ha, Dasol Kim, Chang Hoi Ho, Doo Sun R. Park, Jung Eun Chu, Sun Seon Lee, Johnny C.L. Chan

Research output: Contribution to journalReview articlepeer-review

3 Scopus citations

Abstract

Climate change due to greenhouse gases has fueled more intense tropical cyclones (TCs) globally. However, the characteristics rainfall strength (RS) and rainfall area (RA) of TCs and their future changes in regional scales are not yet fully understood. Here, using ultra-high-resolution coupled model simulations, we investigate the dominant factors which control rainfall characteristics of landfalling TCs in the North Indian Ocean (NIO) and western-North Pacific (WNP) and their future change in responses to doubling and quadrupling of atmospheric CO2 concentrations. In the NIO, RS increases more than RA when CO2 rises, but the WNP shows the opposite behavior. We demonstrate that RS is highly related to the lifetime maximum intensity, landfall intensity, and latent heat flux (LHFLX), while RA depends mainly on LHFLX, relative humidity at 600 hPa, and vertical wind shear over the WNP. Our results suggest the need to establish regional-scale adaptation strategies for future changes in landfalling TCs rainfall.

Original languageEnglish
Article number100581
JournalWeather and Climate Extremes
Volume41
DOIs
StatePublished - Sep 2023

Bibliographical note

Publisher Copyright:
© 2023 The Authors

Keywords

  • CESM high-Resolution modeling
  • Climate change
  • CO increase
  • Rainfall area
  • Rainfall strength
  • Tropical cyclone

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