Recent decrease in typhoon destructive potential and global warming implications

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • I-I Lin
  • Johnny C.L. Chan

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Detail(s)

Original languageEnglish
Article number7182
Journal / PublicationNature Communications
Volume6
Online published20 May 2015
Publication statusPublished - 2015

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Abstract

Typhoons (tropical cyclones) severely impact the half-billion population of the Asian Pacific. Intriguingly, during the recent decade, typhoon destructive potential (Power Dissipation Index, PDI) has decreased considerably (by ∼35%). This decrease, paradoxically, has occurred despite the increase in typhoon intensity and ocean warming. Using the method proposed by Emanuel (in 2007), we show that the stronger negative contributions from typhoon frequency and duration, decrease to cancel the positive contribution from the increasing intensity, controlling the PDI. Examining the typhoons' environmental conditions, we find that although the ocean condition became more favourable (warming) in the recent decade, the atmospheric condition 'worsened' at the same time. The 'worsened' atmospheric condition appears to effectively overpower the 'better' ocean conditions to suppress PDI. This stronger negative contribution from reduced typhoon frequency over the increased intensity is also present under the global warming scenario, based on analysis of the simulated typhoon data from high-resolution modelling.

Research Area(s)

Citation Format(s)

Recent decrease in typhoon destructive potential and global warming implications. / Lin, I-I; Chan, Johnny C.L.
In: Nature Communications, Vol. 6, 7182, 2015.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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