Changes in tropical cyclone activity offset the ocean surface warming in northwest Pacific: 1981–2014

Chang, Chi-Jen; Wang, S.‐Y. Simon; Hsu, Huang‐Hsiung

doi:10.1002/asl.651

Cited by 4 publications

(2 citation statements)

References 31 publications

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“…temperatures upwelled after the passing of each storm (Chang et al, 2016) might have served to weaken Haishen, but this typhoon still resulted in downstream effects.…”

Section: 1029/2020gl091430mentioning

confidence: 99%

Three Western Pacific Typhoons Strengthened Fire Weather in the Recent Northwest U.S. Conflagration

Stuivenvolt-Allen

Wang

LaPlante

et al. 2021

Geophysical Research Letters

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Strong winds that accentuated a fire outbreak in the western United States in early September of 2020 resulted from an atmospheric wave train that spanned the Pacific Ocean. Days before the atmospheric waves developed in the United States, three western Pacific tropical cyclones (typhoons) underwent an extratropical transition over Korea within an unprecedentedly short span of 12 days. Using a climate diagnostic approach and historical forecast data, it was found that the amplitude of the atmospheric waves accompanying the western U.S. fire weather would not have been so profound if not for the influence of these typhoons. Together, the recurving typhoons provided a significant source of wave activity flux directed toward North America – amplifying the ridge over the U.S. west coast while deepening the trough in central Canada. This anomalous circulation produced the severe frontal system that caused extreme winds in western Oregon, Washington and California – rapidly spreading fire.

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“…temperatures upwelled after the passing of each storm (Chang et al, 2016) might have served to weaken Haishen, but this typhoon still resulted in downstream effects.…”

Section: 1029/2020gl091430mentioning

confidence: 99%

Three Western Pacific Typhoons Strengthened Fire Weather in the Recent Northwest U.S. Conflagration

Stuivenvolt-Allen

Wang

LaPlante

et al. 2021

Geophysical Research Letters

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“…Using the reanalysis dataset and observed TC track data, Hart (2011) examined the impact of the Northern Hemispheric (NH) TC activity on the subsequent NH winter season and found a negative correlation between the NH TC activity and the stationary meridional heat transport in the NH winter season. In addition, Chang et al (2016) revealed that the existence of TC cold wakes slowed down the warming SST trend in the western North Pacific (WNP) in the past few decades. Hsu et al (2008a,b) and Arakane and Hsu (2020, hereinafter AH20) have used a dynamic statistical approach to estimate the footprints of TCs in climate variability in the WNP.…”

Section: Introductionmentioning

confidence: 99%

Tropical Cyclone Footprints in Long-Term Mean State and Multiscale Climate Variability in the Western North Pacific as Seen in the JRA-55 Reanalysis

Arakane

Hsu

2021

Journal of Climate

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The monsoon trough and subtropical high have long been acknowledged to exert a substantial modulating effect on the genesis and development of TCs in the western North Pacific (WNP). However, the potential upscaling effect of TCs on large-scale circulation remains poorly understood. This study revealed the considerable contributions of TCs to the climate mean state and variability in the WNP between 1958 and 2019, characterized by a strengthened monsoon trough and weakened subtropical anticyclonic circulation in the lower troposphere, enhanced anticyclonic circulation in the upper troposphere, and warming throughout the troposphere. TCs constituted distinct footprints in the long-term mean states of the WNP summer monsoon, and their contributions increased intraseasonal and interannual variance by 50%–70%. The interdecadal variations and long-term trends in intraseasonal variance were mainly due to the year-to-year fluctuations in TC activity. The size of TC footprints was positively correlated with the magnitude of TC activity.Our findings suggest that the full understanding of climate variability and changes cannot be achieved simply on the basis of low-frequency, large-scale circulations. Rather, TCs must be regarded as a crucial component in the climate system, and their interactions with large-scale circulations require thorough exploration. The long-term dataset created in this study provides an opportunity to study the interaction between TCs and TC-free large-scale circulations to advance our understanding of climate variability in the WNP. Our findings also indicate that realistic climate projections must involve the accurate simulations of TCs.

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Relationship between Pacific Ocean warming and tropical cyclone activity over the western North Pacific

Song

Tang

Wang

2018

Stoch Environ Res Risk Assess

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Changes in tropical cyclone activity offset the ocean surface warming in northwest Pacific: 1981–2014

Cited by 4 publications

References 31 publications

Three Western Pacific Typhoons Strengthened Fire Weather in the Recent Northwest U.S. Conflagration

Three Western Pacific Typhoons Strengthened Fire Weather in the Recent Northwest U.S. Conflagration

Tropical Cyclone Footprints in Long-Term Mean State and Multiscale Climate Variability in the Western North Pacific as Seen in the JRA-55 Reanalysis

Relationship between Pacific Ocean warming and tropical cyclone activity over the western North Pacific

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