Internal structure of ex‐Typhoon Phanfone (2014) under an extratropical transition as observed by the research vessel Mirai

Abstract The internal structure of Typhoon Phanfone (2014) undergoing “extratropical transition” over ocean was captured from the research vessel Mirai. The observed time series from world first shipboard polarimetric weather radar and frequent radiosonde launches revealed both dynamic and thermodyn...

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Main Authors: Masaki Katsumata, Shuichi Mori, Biao Geng, Jun Inoue
Format: Article
Language:English
Published: Wiley 2016-09-01
Series:Geophysical Research Letters
Subjects:
Online Access:https://doi.org/10.1002/2016GL070384
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author Masaki Katsumata
Shuichi Mori
Biao Geng
Jun Inoue
author_facet Masaki Katsumata
Shuichi Mori
Biao Geng
Jun Inoue
author_sort Masaki Katsumata
collection DOAJ
description Abstract The internal structure of Typhoon Phanfone (2014) undergoing “extratropical transition” over ocean was captured from the research vessel Mirai. The observed time series from world first shipboard polarimetric weather radar and frequent radiosonde launches revealed both dynamic and thermodynamic structure simultaneously in detail for four phases: cirrus shield, warm front, precipitation core, and western flank. To the east of the low‐pressure center, a warm front developed along the midlatitude baroclinic zone. In the eastern vicinity of the center, remnants of the warm core worked to enhance precipitation through convergence and frontogenesis against cold ambient air. This frontogenesis and related latent heating/cooling are suggested to maintain/enhance convection in these phases. In contrast, the warm core suppressed convection in the northern/western vicinity of the low‐pressure center.
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publishDate 2016-09-01
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spelling doaj-art-e748dc00482f45adb10ea0bc6f331e4e2025-08-20T01:52:06ZengWileyGeophysical Research Letters0094-82761944-80072016-09-0143179333934110.1002/2016GL070384Internal structure of ex‐Typhoon Phanfone (2014) under an extratropical transition as observed by the research vessel MiraiMasaki Katsumata0Shuichi Mori1Biao Geng2Jun Inoue3Japan Agency for Marine‐Earth Science and Technology Yokosuka JapanJapan Agency for Marine‐Earth Science and Technology Yokosuka JapanJapan Agency for Marine‐Earth Science and Technology Yokosuka JapanNational Institute of Polar Research Tachikawa JapanAbstract The internal structure of Typhoon Phanfone (2014) undergoing “extratropical transition” over ocean was captured from the research vessel Mirai. The observed time series from world first shipboard polarimetric weather radar and frequent radiosonde launches revealed both dynamic and thermodynamic structure simultaneously in detail for four phases: cirrus shield, warm front, precipitation core, and western flank. To the east of the low‐pressure center, a warm front developed along the midlatitude baroclinic zone. In the eastern vicinity of the center, remnants of the warm core worked to enhance precipitation through convergence and frontogenesis against cold ambient air. This frontogenesis and related latent heating/cooling are suggested to maintain/enhance convection in these phases. In contrast, the warm core suppressed convection in the northern/western vicinity of the low‐pressure center.https://doi.org/10.1002/2016GL070384extratropical transitionresearch vesselshipboard polarimetric radar
spellingShingle Masaki Katsumata
Shuichi Mori
Biao Geng
Jun Inoue
Internal structure of ex‐Typhoon Phanfone (2014) under an extratropical transition as observed by the research vessel Mirai
Geophysical Research Letters
extratropical transition
research vessel
shipboard polarimetric radar
title Internal structure of ex‐Typhoon Phanfone (2014) under an extratropical transition as observed by the research vessel Mirai
title_full Internal structure of ex‐Typhoon Phanfone (2014) under an extratropical transition as observed by the research vessel Mirai
title_fullStr Internal structure of ex‐Typhoon Phanfone (2014) under an extratropical transition as observed by the research vessel Mirai
title_full_unstemmed Internal structure of ex‐Typhoon Phanfone (2014) under an extratropical transition as observed by the research vessel Mirai
title_short Internal structure of ex‐Typhoon Phanfone (2014) under an extratropical transition as observed by the research vessel Mirai
title_sort internal structure of ex typhoon phanfone 2014 under an extratropical transition as observed by the research vessel mirai
topic extratropical transition
research vessel
shipboard polarimetric radar
url https://doi.org/10.1002/2016GL070384
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AT biaogeng internalstructureofextyphoonphanfone2014underanextratropicaltransitionasobservedbytheresearchvesselmirai
AT juninoue internalstructureofextyphoonphanfone2014underanextratropicaltransitionasobservedbytheresearchvesselmirai