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Title: Pacific Meridional Mode‐Western North Pacific Tropical Cyclone Linkage Explained by Tropical Pacific Quasi‐Decadal Variability

Abstract

Abstract Previous studies argued that the Pacific Meridional Mode (PMM) impacts tropical cyclone (TC) genesis variability over the southeastern part of the western North Pacific (SE‐WNP). Here, we find that the statistical relationship between PMM and SE‐WNP TC genesis frequency is dominated by their co‐variability on decadal timescales. The decadal component of the PMM exhibits very similar temporal and spatial features to quasi‐decadal tropical Pacific sea surface temperature (SST) variability. The latter can affect SE‐WNP TC activity via changes in both zonal vertical wind shear and low‐level vorticity. In contrast, the interannual component of the PMM exhibits no statistically significant correlation with SE‐WNP TC genesis. Furthermore, observations show that both interannual and decadal variability of SE‐WNP TC activity are well correlated with the commonly used Niño3.4 El Niño‐Southern Oscillation index. Thus, equatorial Pacific SST variability is the dominant source of SE‐WNP TC activity predictability on different timescales.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]
  1. CIC‐FEMD/ILCEC, Key Laboratory of Meteorological Disaster of Ministry of Education (KLME) Nanjing University of Information Science and Technology Nanjing China
  2. Center for Climate Physics Institute for Basic Science (IBS) Republic of Korea, Busan Republic of Korea
  3. Department of Atmospheric Sciences, SOEST University of Hawai'i at Mānoa Honolulu HI USA
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1575307
Grant/Contract Number:  
DE‐SC000511
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Geophysical Research Letters
Additional Journal Information:
Journal Name: Geophysical Research Letters Journal Volume: 46 Journal Issue: 22; Journal ID: ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)
Country of Publication:
United States
Language:
English

Citation Formats

Liu, Chao, Zhang, Wenjun, Stuecker, Malte F., and Jin, Fei‐Fei. Pacific Meridional Mode‐Western North Pacific Tropical Cyclone Linkage Explained by Tropical Pacific Quasi‐Decadal Variability. United States: N. p., 2019. Web. doi:10.1029/2019GL085340.
Liu, Chao, Zhang, Wenjun, Stuecker, Malte F., & Jin, Fei‐Fei. Pacific Meridional Mode‐Western North Pacific Tropical Cyclone Linkage Explained by Tropical Pacific Quasi‐Decadal Variability. United States. https://doi.org/10.1029/2019GL085340
Liu, Chao, Zhang, Wenjun, Stuecker, Malte F., and Jin, Fei‐Fei. Fri . "Pacific Meridional Mode‐Western North Pacific Tropical Cyclone Linkage Explained by Tropical Pacific Quasi‐Decadal Variability". United States. https://doi.org/10.1029/2019GL085340.
@article{osti_1575307,
title = {Pacific Meridional Mode‐Western North Pacific Tropical Cyclone Linkage Explained by Tropical Pacific Quasi‐Decadal Variability},
author = {Liu, Chao and Zhang, Wenjun and Stuecker, Malte F. and Jin, Fei‐Fei},
abstractNote = {Abstract Previous studies argued that the Pacific Meridional Mode (PMM) impacts tropical cyclone (TC) genesis variability over the southeastern part of the western North Pacific (SE‐WNP). Here, we find that the statistical relationship between PMM and SE‐WNP TC genesis frequency is dominated by their co‐variability on decadal timescales. The decadal component of the PMM exhibits very similar temporal and spatial features to quasi‐decadal tropical Pacific sea surface temperature (SST) variability. The latter can affect SE‐WNP TC activity via changes in both zonal vertical wind shear and low‐level vorticity. In contrast, the interannual component of the PMM exhibits no statistically significant correlation with SE‐WNP TC genesis. Furthermore, observations show that both interannual and decadal variability of SE‐WNP TC activity are well correlated with the commonly used Niño3.4 El Niño‐Southern Oscillation index. Thus, equatorial Pacific SST variability is the dominant source of SE‐WNP TC activity predictability on different timescales.},
doi = {10.1029/2019GL085340},
journal = {Geophysical Research Letters},
number = 22,
volume = 46,
place = {United States},
year = {2019},
month = {11}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1029/2019GL085340

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Cited by: 18 works
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