Influence of vertical wind shear on wind- and rainfall areas of tropical cyclones making landfall over South Korea

Dasol Kim; Chang Hoi Ho; Doo Sun R. Park; Jinwon Kim

doi:10.1371/journal.pone.0209885

Influence of vertical wind shear on wind- and rainfall areas of tropical cyclones making landfall over South Korea

Dasol Kim, Chang Hoi Ho, Doo Sun R. Park, Jinwon Kim

Department of Earth Science Education

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

The wind- and rainfall areas of tropical cyclones (TCs) making landfall over South Korea were examined for the period 1998–2013 by using the Modern Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2) and Tropical Rainfall Measuring Mission (TRMM) 3B42 data. Here, the wind- and rainfall areas were defined as the regions where wind speeds and precipitation rates exceed 14 m s^-1 and 80 mm day^-1 within 1000 km from the TC center, respectively. In general, TCs show significantly asymmetric wind and rainfall structures, with strong vertical wind shear appearing over South Korea during the landfall period. The rainfall area significantly increases with environmental vertical wind shear while the wind area is not sensitive to it. Composite analyses of the cases of strong and weak vertical wind shear confirm that the increase of rainfall area is related to the asymmetric convection (rising/sinking motion in the downshear-left/upshear-right side) induced by the vertical wind shear. This work highlights the importance of local atmospheric environment in determining the area primarily affected by strong winds or heavy rainfall during TC landfalls.

Original language	English
Article number	e0209885
Journal	PLoS ONE
Volume	14
Issue number	1
DOIs	https://doi.org/10.1371/journal.pone.0209885
State	Published - Jan 2019

Access to Document

10.1371/journal.pone.0209885

Cite this

@article{efba7f0fdda940858c359a8215b58938,

title = "Influence of vertical wind shear on wind- and rainfall areas of tropical cyclones making landfall over South Korea",

abstract = "The wind- and rainfall areas of tropical cyclones (TCs) making landfall over South Korea were examined for the period 1998–2013 by using the Modern Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2) and Tropical Rainfall Measuring Mission (TRMM) 3B42 data. Here, the wind- and rainfall areas were defined as the regions where wind speeds and precipitation rates exceed 14 m s-1 and 80 mm day-1 within 1000 km from the TC center, respectively. In general, TCs show significantly asymmetric wind and rainfall structures, with strong vertical wind shear appearing over South Korea during the landfall period. The rainfall area significantly increases with environmental vertical wind shear while the wind area is not sensitive to it. Composite analyses of the cases of strong and weak vertical wind shear confirm that the increase of rainfall area is related to the asymmetric convection (rising/sinking motion in the downshear-left/upshear-right side) induced by the vertical wind shear. This work highlights the importance of local atmospheric environment in determining the area primarily affected by strong winds or heavy rainfall during TC landfalls.",

author = "Dasol Kim and Ho, {Chang Hoi} and Park, {Doo Sun R.} and Jinwon Kim",

note = "Publisher Copyright: {\textcopyright} 2019 Kim et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.",

year = "2019",

month = jan,

doi = "10.1371/journal.pone.0209885",

language = "English",

volume = "14",

journal = "PLoS ONE",

issn = "1932-6203",

publisher = "Public Library of Science",

number = "1",

}

TY - JOUR

T1 - Influence of vertical wind shear on wind- and rainfall areas of tropical cyclones making landfall over South Korea

AU - Kim, Dasol

AU - Ho, Chang Hoi

AU - Park, Doo Sun R.

AU - Kim, Jinwon

N1 - Publisher Copyright: © 2019 Kim et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

PY - 2019/1

Y1 - 2019/1

N2 - The wind- and rainfall areas of tropical cyclones (TCs) making landfall over South Korea were examined for the period 1998–2013 by using the Modern Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2) and Tropical Rainfall Measuring Mission (TRMM) 3B42 data. Here, the wind- and rainfall areas were defined as the regions where wind speeds and precipitation rates exceed 14 m s-1 and 80 mm day-1 within 1000 km from the TC center, respectively. In general, TCs show significantly asymmetric wind and rainfall structures, with strong vertical wind shear appearing over South Korea during the landfall period. The rainfall area significantly increases with environmental vertical wind shear while the wind area is not sensitive to it. Composite analyses of the cases of strong and weak vertical wind shear confirm that the increase of rainfall area is related to the asymmetric convection (rising/sinking motion in the downshear-left/upshear-right side) induced by the vertical wind shear. This work highlights the importance of local atmospheric environment in determining the area primarily affected by strong winds or heavy rainfall during TC landfalls.

AB - The wind- and rainfall areas of tropical cyclones (TCs) making landfall over South Korea were examined for the period 1998–2013 by using the Modern Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2) and Tropical Rainfall Measuring Mission (TRMM) 3B42 data. Here, the wind- and rainfall areas were defined as the regions where wind speeds and precipitation rates exceed 14 m s-1 and 80 mm day-1 within 1000 km from the TC center, respectively. In general, TCs show significantly asymmetric wind and rainfall structures, with strong vertical wind shear appearing over South Korea during the landfall period. The rainfall area significantly increases with environmental vertical wind shear while the wind area is not sensitive to it. Composite analyses of the cases of strong and weak vertical wind shear confirm that the increase of rainfall area is related to the asymmetric convection (rising/sinking motion in the downshear-left/upshear-right side) induced by the vertical wind shear. This work highlights the importance of local atmospheric environment in determining the area primarily affected by strong winds or heavy rainfall during TC landfalls.

UR - http://www.scopus.com/inward/record.url?scp=85059613511&partnerID=8YFLogxK

U2 - 10.1371/journal.pone.0209885

DO - 10.1371/journal.pone.0209885

M3 - Article

C2 - 30615642

AN - SCOPUS:85059613511

SN - 1932-6203

VL - 14

JO - PLoS ONE

JF - PLoS ONE

IS - 1

M1 - e0209885

ER -

Influence of vertical wind shear on wind- and rainfall areas of tropical cyclones making landfall over South Korea

Abstract

Access to Document

Other files and links

Fingerprint

Cite this