Recent global decrease in the inner-core rain rate of tropical cyclones

Shifei Tu; Jianjun Xu; Johnny C. L. Chan; Kian Huang; Feng Xu; Long S. Chiu

doi:10.1038/s41467-021-22304-y

Recent global decrease in the inner-core rain rate of tropical cyclones

Shifei Tu, Jianjun Xu^*, Johnny C. L. Chan, Kian Huang, Feng Xu, Long S. Chiu

^*Corresponding author for this work

School of Energy and Environment

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

63 Citations (Scopus)

65 Downloads (CityUHK Scholars)

Abstract

Heavy rainfall is one of the major aspects of tropical cyclones (TC) and can cause substantial damages. Here, we show, based on satellite observational rainfall data and numerical model results, that between 1999 and 2018, the rain rate in the outer region of TCs has been increasing, but it has decreased significantly in the inner-core. Globally, the TC rain rate has increased by 8 ± 4% during this period, which is mainly contributed by an increase in rain rate in the TC outer region due to increasing water vapor availability in the atmosphere with rising surface temperature. On the other hand, the rain rate in the inner-core of TCs has decreased by 24 ± 3% during the same period. The decreasing trend in the inner-core rain rate likely results mainly from an increase in atmospheric stability.

Original language	English
Article number	1948
Journal	Nature Communications
Volume	12
Online published	29 Mar 2021
DOIs	https://doi.org/10.1038/s41467-021-22304-y
Publication status	Published - 2021

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This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format.

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title = "Recent global decrease in the inner-core rain rate of tropical cyclones",

abstract = "Heavy rainfall is one of the major aspects of tropical cyclones (TC) and can cause substantial damages. Here, we show, based on satellite observational rainfall data and numerical model results, that between 1999 and 2018, the rain rate in the outer region of TCs has been increasing, but it has decreased significantly in the inner-core. Globally, the TC rain rate has increased by 8 ± 4% during this period, which is mainly contributed by an increase in rain rate in the TC outer region due to increasing water vapor availability in the atmosphere with rising surface temperature. On the other hand, the rain rate in the inner-core of TCs has decreased by 24 ± 3% during the same period. The decreasing trend in the inner-core rain rate likely results mainly from an increase in atmospheric stability.",

author = "Shifei Tu and Jianjun Xu and Chan, {Johnny C. L.} and Kian Huang and Feng Xu and Chiu, {Long S.}",

year = "2021",

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AU - Tu, Shifei

AU - Xu, Jianjun

AU - Chan, Johnny C. L.

AU - Huang, Kian

AU - Xu, Feng

AU - Chiu, Long S.

PY - 2021

Y1 - 2021

N2 - Heavy rainfall is one of the major aspects of tropical cyclones (TC) and can cause substantial damages. Here, we show, based on satellite observational rainfall data and numerical model results, that between 1999 and 2018, the rain rate in the outer region of TCs has been increasing, but it has decreased significantly in the inner-core. Globally, the TC rain rate has increased by 8 ± 4% during this period, which is mainly contributed by an increase in rain rate in the TC outer region due to increasing water vapor availability in the atmosphere with rising surface temperature. On the other hand, the rain rate in the inner-core of TCs has decreased by 24 ± 3% during the same period. The decreasing trend in the inner-core rain rate likely results mainly from an increase in atmospheric stability.

AB - Heavy rainfall is one of the major aspects of tropical cyclones (TC) and can cause substantial damages. Here, we show, based on satellite observational rainfall data and numerical model results, that between 1999 and 2018, the rain rate in the outer region of TCs has been increasing, but it has decreased significantly in the inner-core. Globally, the TC rain rate has increased by 8 ± 4% during this period, which is mainly contributed by an increase in rain rate in the TC outer region due to increasing water vapor availability in the atmosphere with rising surface temperature. On the other hand, the rain rate in the inner-core of TCs has decreased by 24 ± 3% during the same period. The decreasing trend in the inner-core rain rate likely results mainly from an increase in atmospheric stability.

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DO - 10.1038/s41467-021-22304-y

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SN - 2041-1723

VL - 12

JO - Nature Communications

JF - Nature Communications

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Recent global decrease in the inner-core rain rate of tropical cyclones

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GRF: Understanding the Physical Processes Responsible for Different Rainfall Distributions Associated with Tropical Cyclone Landfall

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Recent global decrease in the inner-core rain rate of tropical cyclones

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GRF: Understanding the Physical Processes Responsible for Different Rainfall Distributions Associated with Tropical Cyclone Landfall

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